WO2023175760A1 - 交流回転機の制御装置および電動パワーステアリング装置 - Google Patents
交流回転機の制御装置および電動パワーステアリング装置 Download PDFInfo
- Publication number
- WO2023175760A1 WO2023175760A1 PCT/JP2022/011851 JP2022011851W WO2023175760A1 WO 2023175760 A1 WO2023175760 A1 WO 2023175760A1 JP 2022011851 W JP2022011851 W JP 2022011851W WO 2023175760 A1 WO2023175760 A1 WO 2023175760A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- value
- rotating machine
- command value
- voltage command
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
Definitions
- the present disclosure relates to a control device and an electric power steering device for an AC rotating machine.
- Patent Document 1 discloses a control device that compensates for interference terms in two rotating axes (for example, d-axis and q-axis) in vector control of an AC rotating machine.
- the control device includes a current PI controller and a non-coherent error corrector.
- the current PI controller includes two integrators corresponding to the d-axis and the q-axis, respectively, in order to perform proportional/integral control.
- the non-interference error corrector also includes two integrators corresponding to the d-axis and the q-axis, respectively.
- windup in the integrator may cause a phenomenon in which control accuracy is reduced (so-called overshoot, etc.).
- a method for suppressing windup of an integrator it is effective to perform anti-windup such as limiting the integral term to an appropriate value.
- the calculation result of the integrator in the current PI controller and the calculation result of the integrator in the non-interference error corrector are use In this way, when using the calculation results of two integrators for one controlled value (for example, d-axis voltage command value), it is difficult to perform anti-windup appropriately. As a result, there is a problem that control becomes unstable.
- the present disclosure has been made in view of the above circumstances, and aims to provide a control device and an electric power steering device for an AC rotating machine that can perform more stable control.
- a control device for an AC rotating machine includes an inverter that applies voltage to the AC rotating machine, and a current detector that detects a rotating machine current flowing through the AC rotating machine.
- a first axis voltage command value calculator for calculating a voltage command value for a first axis of the two rotational axes of the AC rotating machine; and a second axis voltage for calculating a voltage command value for a second axis of the two rotational axes.
- a command value calculator, and the first axis voltage command value calculator is configured to calculate a first axis voltage which is a deviation between the current command value on the first axis and a detected current value of the rotating machine current on the first axis.
- an electric power steering device includes a control device for the AC rotating machine, the AC rotating machine, and a driving force transmission mechanism that transmits the driving force of the AC rotating machine to a steering system. Be prepared.
- FIG. 1 is a block diagram showing a schematic configuration of a control device for a rotating machine according to Embodiment 1.
- FIG. FIG. 3 is a diagram for explaining the principle of generation of switching signals in the first embodiment.
- FIG. 2 is a block diagram showing the configuration of a d-axis voltage command value calculator in FIG. 1.
- FIG. 2 is a block diagram showing the configuration of a q-axis voltage command value calculator in FIG. 1.
- FIG. 2 is a flowchart illustrating an example of processing performed by the modified voltage generator of FIG. 1.
- FIG. 6 is a diagram showing an example of waveforms of a voltage command value and a modified voltage command value in the first embodiment.
- FIG. 5 is a Bode diagram showing a transfer characteristic from a q-axis current command value to a q-axis detected current value when the rotational angular velocity is high in the control device according to the first embodiment.
- FIG. FIG. 2 is a block diagram showing a schematic configuration of a control device for a rotating machine according to a second embodiment.
- FIG. 3 is a block diagram showing the configuration of a d-axis voltage command value calculator according to Embodiment 2.
- FIG. FIG. 3 is a block diagram showing the configuration of a q-axis voltage command value calculator according to Embodiment 2.
- FIG. 7 is a diagram showing the relationship between proportional gain, limit gain, and voltage amplitude in Embodiment 2.
- FIG. 7 is a graph showing an example of a waveform of a voltage across a shunt resistor in Embodiment 2.
- FIG. 7 is a diagram showing a case where some values of corrected voltage commands are larger than an upper limit value in the second embodiment.
- FIG. 3 is a block diagram showing a schematic configuration of an electric power steering device according to a third embodiment. 7 is a graph showing the relationship between steering torque, q-axis current command value, and vehicle speed in Embodiment 3.
- FIG. 7 is a diagram showing the relationship between vehicle speed and proportional gain in Embodiment 3.
- FIG. FIG. 3 is a block diagram showing a schematic configuration of an electric power steering device according to a fourth embodiment. 7 is a diagram showing the relationship between the amount of change in steering torque and the limit gain in Embodiment 4.
- FIG. 1 is a block diagram showing a schematic configuration of a control device for a rotating machine according to a first embodiment.
- the control device 1 includes a rotor position detector 11, an inverter 12, and a controller 13.
- the control device 1 controls the rotating machine 10 based on a torque command T_ref as a control command input from outside the control device 1 .
- the rotating machine 10 is a three-phase AC rotating machine having three-phase windings U, V, and W. Moreover, the rotating machine 10 is an AC rotating machine that can be controlled based on two rotating axes.
- "two rotating axes” means two axes that rotate in synchronization with the rotor of the rotating machine 10 and are orthogonal to each other in a cross section.
- a "cross section” is a cross section perpendicular to the central axis of the rotor.
- the two rotational axes may be d-q axes.
- the d-axis is an axis that connects the central axis of the rotor and the magnetic poles.
- the q-axis is an axis perpendicular to both the d-axis and the central axis.
- the two rotational axes may be ⁇ - ⁇ axes.
- the ⁇ -axis is an axis shifted from the d-axis in the rotational direction.
- the ⁇ -axis is an axis perpendicular to both the ⁇ -axis and the central axis.
- One of the two rotation axes is called the first axis, and the other is called the second axis.
- the d-axis is referred to as the first axis
- the q-axis is referred to as the second axis.
- the q-axis may be the first axis
- the d-axis may be the second axis
- the ⁇ -axis is referred to as the first axis
- the ⁇ -axis is referred to as the second axis.
- the rotating machine 10 is a permanent magnet synchronous rotating machine and the two rotating axes are the d and q axes.
- the rotating machine 10 may be, for example, a wound field synchronous rotating machine, an induction rotating machine, a synchronous reluctance motor, or the like.
- the d-axis and q-axis in the disclosure below may be replaced with the ⁇ -axis and the ⁇ -axis.
- the rotor position detector 11 includes a resolver, an encoder, an MR (magnetic resistance) sensor, etc., and uses these to detect the rotor position ⁇ .
- the rotor position ⁇ is the position of the rotor of the rotating machine 10 in the rotation direction.
- the rotor position ⁇ of the rotating machine 10 is detected using the rotor position detector 11.
- the inverter 12 is a power converter that applies voltage to the rotating machine 10. Specifically, under the control of the controller 13, the inverter 12 converts the DC power supplied from the DC power supply BT into AC power, and supplies the converted AC power to the rotating machine 10.
- the DC power supply BT includes devices for supplying DC power, such as a DC-DC converter, a diode rectifier, and a PWM rectifier.
- the output voltage (DC bus voltage) of the DC power supply BT is expressed as Vdc.
- the inverter 12 includes upper arm switching elements Sup, Svp, Swp, lower arm switching elements Sun, Svn, Swn, and shunt resistors Ru, Rv, Rw.
- the upper arm switching elements Sup, Svp, and Swp are connected to the positive electrode of the DC power supply BT.
- the lower arm switching elements Sun, Svn, and Swn are connected to the upper arm switching elements Sup, Svp, and Swp, respectively, and are also connected to the negative electrode of the DC power supply BT via shunt resistors Ru, Rv, and Rw, respectively.
- a U-phase series circuit is formed by the upper arm switching element Sup, the lower arm switching element Sun, and the shunt resistor Ru.
- a connection point between the upper arm switching element Sup and the lower arm switching element Sun is connected to the winding U of the rotating machine 10.
- a V-phase series circuit is formed by the upper arm switching element Svp, the lower arm switching element Svn, and the shunt resistor Rv.
- a connection point between the upper arm switching element Svp and the lower arm switching element Svn is connected to the winding V of the rotating machine 10.
- a W-phase series circuit is formed by the upper arm switching element Swp, the lower arm switching element Swn, and the shunt resistor Rw.
- a connection point between the upper arm switching element Swp and the lower arm switching element Swn is connected to the winding W of the rotating machine 10.
- semiconductor switches such as IGBT (Insulated Gate Bipolar Transistor), bipolar transistor, MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), etc. can be used.
- Switching signals Gup, Gvp, and Gwp output from the controller 13 are input to the upper arm switching elements Sup, Svp, and Swp, respectively.
- Switching signals Gun, Gvn, and Gwn output from the controller 13 are input to the lower arm switching elements Sun, Svn, and Swn, respectively.
- the upper arm switching elements Sup, Svp, Swp and the lower arm switching elements Sun, Svn, Swn are turned on or off by the switching signals Gup, Gvp, Gwp, Gun, Gvn, Gwn output from the controller 13. .
- the switching signals Gup, Gvp, Gwp, Gun, Gvn, and Gwn may be collectively referred to as "switching signals Gup to Gwn.”
- the same applies to other switching elements upper arm switching elements Svp, Swp and lower arm switching elements Sun, Svn, Swn.
- the shunt resistors Ru, Rv, and Rw are resistance elements for current detection.
- the voltages at both ends VRu, VRv, and VRw may be collectively referred to as "voltages at both ends VRu to VRw.”
- the voltages at both ends VRu, VRv, and VRw are values obtained by multiplying the rotating machine currents iu, iv, and iw by the resistance values of the shunt resistors Ru, Rv, and Rw, and are proportional to the currents iu, iv, and iw. This is the amount. Therefore, it can be said that the voltages at both ends VRu, VRv, and VRw are detected values of current (detected values of rotating machine current).
- the inverter 12 may be integrated with the rotating machine 10.
- the integrated inverter 12 and rotating machine 10 are called a power pack.
- the controller 13 uses the torque command T_ref, the voltages at both ends VRu, VRv, VRw, and the rotor position ⁇ as input values, and generates switching signals Gup to Gwn that drive the inverter 12 based on these.
- the controller 13 is, for example, a PWM controller realized by a microcomputer or a discrete time calculator such as a DSP (Digital Signal Processor).
- the controller 13 includes a current command value calculator 21, a current detector 22, a coordinate converter 23 (coordinate converter for detection), a voltage command value calculator 24, a coordinate converter 25 (coordinate converter for control), and a corrected voltage It includes a generator 26, a PWM signal generator 27, and a speed calculator 28.
- the speed calculator 28 calculates the rotational angular velocity ⁇ of the rotating machine 10 by performing differential calculation or difference calculation on the rotor position ⁇ .
- the speed calculator 28 inputs the obtained rotational angular velocity ⁇ to the current command value calculator 21 as well as to the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q of the voltage command value calculator 24.
- the current command value calculator 21 calculates current command values id_ref and iq_ref based on the torque command T_ref, the DC bus voltage Vdc, and the rotational angular velocity ⁇ .
- the current command values id_ref and iq_ref are command values (target values) of the current to be applied to the rotating machine 10.
- id_ref is also called a "field weakening current command value”
- iq_ref is also called a “torque current command value”.
- the calculation methods executed by the current command value calculation unit 21 include the known MTPA (Maximum Torque Per Ampere) control, MTPV (Maximum Torque Per Voltage) control, and flux weakening control within the operating range (speed-torque characteristic range). They may be used in appropriate combinations. Note that the rotational angular velocity ⁇ may be converted to the rotational speed of the rotor, and each control may be performed using the rotational speed.
- the PWM signal generator 27 outputs PWM (Pulse Width Modulation) modulated switching signals Gup to Gwn based on the corrected voltage command values vu', vv', and vw' output from the corrected voltage generator 26.
- PWM Pulse Width Modulation
- FIG. 2 is a diagram for explaining the principle of generation of switching signals in the first embodiment.
- the PWM signal generator 27 generates switching signals Gup to Gwn by comparing the corrected voltage command values vu', vv', vw' with a carrier triangular wave (carrier wave) C having a period Tc (frequency fc). .
- the corrected voltage command values vu', vv', and vw' correspond to the U phase, V phase, and W phase, respectively.
- the PWM signal generator 27 turns on the switching signal Gup (“1”) and turns off the switching signal Gun (“0”). Conversely, if the modified voltage command value vu' is smaller than the carrier triangular wave C, the PWM signal generator 27 turns off the switching signal Gup (“0”) and turns on the switching signal Gun (“1”).
- the PWM signal generator 27 turns on the switching signal Gvp ("1") and turns off the switching signal Gvn ("0"). Conversely, if the modified voltage command value vv' is smaller than the carrier triangular wave C, the PWM signal generator 27 turns off the switching signal Gvp (“0”) and turns on the switching signal Gvn (“1”).
- the PWM signal generator 27 turns on the switching signal Gwp ("1") and turns off the switching signal Gwn ("0"). Conversely, if the modified voltage command value vw' is smaller than the carrier triangular wave C, the PWM signal generator 27 turns off the switching signal Gwp (“0”) and turns on the switching signal Gwn (“1”).
- a short circuit prevention time (dead time) is provided in the switching signals Gup to Gwn so that the upper arm switching elements Sup, Svp, Swp and the lower arm switching elements Sun, Svn, Swn of the inverter 12 are not turned on at the same time. Also good.
- the switching signals Gup to Gwn include a pattern in which all of the lower arm switching elements Sun, Svn, and Swn are turned on during one period of electrical angle of the rotating machine 10. Specifically, a pattern in which all of the switching signals Gun, Gvn, and Gwn are on (1) is included, as in section D in FIG.
- the voltage applied from the inverter 12 to the rotating machine 10 after PWM modulation includes components that are integral multiples of the period Tc of the carrier triangular wave C. is included. Due to this, a current having an integral multiple of the period Tc is applied to the rotating machine 10, and depending on the value of the period Tc, the rotating machine 10 generates abnormal noise.
- the cycle Tc of the carrier triangular wave C should be set to 60 [ ⁇ s] or less. good.
- the period Tc of the carrier triangular wave C may be set to about 50 [ ⁇ s].
- the current detector 22 uses the voltages VRu, VRv, VRw across the shunt resistors Ru, Rv, Rw and the switching signals Gup to Gwn output from the PWM signal generator 27 to detect the pre-conversion detection currents ius, ivs, iws. Output. Specifically, the current detector 22 acquires the voltages VRu, VRv, and VRw across the shunt resistors Ru, Rv, and Rw at timing "X" shown in FIG. 2 . This timing "X" is the timing at which the carrier triangular wave C reaches its maximum value (DC bus voltage Vdc).
- the switching signals Gun, Gvn, and Gwn input to the lower arm switching elements Sun, Svn, and Swn are all on ("1"). Therefore, the current detector 22 divides the voltages VRu, VRv, and VRw across the shunt resistors Ru, Rv, and Rw by -Ru, -Rv, and -Rw, respectively, to obtain the pre-conversion detected currents ius, ivs, and iws. Get the value.
- the coordinate converter 23 performs coordinate conversion based on the pre-conversion detection currents ius, ivs, iws detected by the current detector 22 and the rotor position ⁇ detected by the rotor position detector 11. Thereby, the coordinate converter 23 calculates detected current values id and iq on the two rotational axes (d and q axes). Further, the coordinate converter 23 inputs the calculation results (detected current values id, iq after coordinate conversion) to the voltage command value calculation section 24 .
- the voltage command value calculation unit 24 calculates the rotational speed between two rotational axes (d , q-axis) are calculated. Hereinafter, details of the voltage command value calculation section 24 will be explained.
- the voltage command value calculation unit 24 includes a first deviation calculation unit 24a, a second deviation calculation unit 24b, a d-axis voltage command value calculation unit 24d, and a q-axis voltage command value calculation unit 24q.
- the first deviation calculator 24a calculates a d-axis current deviation ed, which is a deviation between the d-axis current command value id_ref and the d-axis detected current value id.
- the second deviation calculator 24b calculates a q-axis current deviation eq that is a deviation between the q-axis current command value iq_ref and the q-axis detected current value iq.
- the value of the d-axis current deviation ed calculated by the first deviation calculator 24a is input to the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q.
- the value of the q-axis current deviation eq calculated by the second deviation calculator 24b is input to the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q.
- the d-axis voltage command value calculator 24d calculates the d-axis voltage command value vd using the d-axis current deviation ed, the q-axis current deviation eq, the DC bus voltage Vdc, and the rotational angular velocity ⁇ .
- the q-axis voltage command value calculator 24q calculates the q-axis voltage command value vq using the q-axis current deviation eq, the d-axis current deviation ed, the DC bus voltage Vdc, and the rotational angular velocity ⁇ .
- the deviation between the current command value and the detected current value on the first axis of the two rotating axes may be referred to as a first deviation.
- the deviation between the current command value and the detected current value on the second axis of the two rotating axes may be referred to as a second deviation.
- the d-axis current deviation ed which is the deviation between the current command value id_ref on the d-axis and the d-axis detected current value id
- the q-axis current deviation eq is the "second deviation”.
- the q-axis is the first axis
- the q-axis current deviation eq is the "first deviation”
- the d-axis current deviation ed is the "second deviation”.
- FIG. 3 shows details of the d-axis voltage command value calculator 24d
- FIG. 4 shows details of the q-axis voltage command value calculator 24q.
- the d-axis voltage command value calculator 24d will be described below with reference to FIG.
- the d-axis voltage command value calculator 24d includes a d-axis proportional amplifier 101d, a limiter 102d, a d-axis integral amplifier 103d, a high pass filter (HPF) 104d, and a response angular frequency amplifier 105d. It includes an inductance amplifier 106d, a multiplier 107d, a subtracter 108d, an integrator 109d, a limiter 110d, and an adder 111d.
- HPF high pass filter
- Kpd is a d-axis proportional gain that is multiplied so that the actually flowing rotating machine current has a preferable response to the current command value id_ref.
- Kpd ⁇ cc ⁇ Ld.
- ⁇ cc is the response angular frequency (more specifically, the reciprocal of the time constant of the feedback control system) for adjusting the frequency response of the rotating machine current to the current command value within a preferable range
- Ld is This is the d-axis inductance of the rotating machine 10.
- Kpd is not limited to ⁇ cc ⁇ Ld, and may be adjusted as appropriate by actually measuring the responsiveness of the rotating machine current that actually flows with respect to the current command value id_ref.
- the d-axis proportional output Vdp calculated by the d-axis proportional amplifier 101d is input to the limiter 102d.
- the limiter 102d compares the d-axis proportional output Vdp with an upper limit value (Vlimit) and a lower limit value (-Vlimit), and outputs a limited d-axis proportional output Vdp' based on the comparison result.
- Vlimit an upper limit value
- -Vlimit a lower limit value
- Vlimit Kmax ⁇ Vdc/2 0.5
- Kmax is the maximum voltage utilization rate of the inverter 12, and is appropriately set according to the desired output. For example, Kmax may be 1.
- the limiter 102d limits the value of Vdp when the d-axis proportional output Vdp exceeds the upper limit value (Vlimit) or falls below the lower limit value (-Vlimit), and limits the d-axis proportional output Vdp' after the limit. Output as . Further, when the d-axis proportional output Vdp is greater than or equal to the lower limit value and less than the upper limit value, the limiter 102d outputs the value of Vdp as it is as the limited d-axis proportional output Vdp'. The value of the limited d-axis proportional output Vdp' output by the limiter 102d is input to the limiter 110d and the adder 111d.
- the self-axis integral input Aid calculated by the d-axis integral amplifier 103d is input to the subtracter 108d.
- the high-pass filter 104d reduces the low frequency component of the q-axis current deviation eq and outputs it to the response angular frequency amplifier 105d.
- the response angular frequency amplifier 105d multiplies the q-axis current deviation eq whose low frequency components have been reduced by the high-pass filter 104d by ⁇ cc, and outputs the result to the multiplier 107d.
- the inductance amplifier 106d multiplies the rotational angular velocity ⁇ by Lq and outputs it to the multiplier 107d.
- Lq is the value of the q-axis inductance of the rotating machine 10.
- the multiplier 107d multiplies the output of the response angular frequency amplifier 105d and the output of the inductance amplifier 106d to obtain the other axis integral input Bid.
- the multiplier 107d outputs the other axis integral input Bid to the subtracter 108d.
- the subtracter 108d subtracts the self-axis integral input Aid with the other-axis integral input Bid to obtain the d-axis integral input Cid.
- the subtracter 108d outputs the d-axis integral input Cid to the integrator 109d.
- the integrator 109d performs an integral operation on the d-axis integral input Cid, and outputs the result to the limiter 110d as a d-axis integral output Vdi.
- the limiter 110d compares the d-axis integral output Vdi with an upper limit value (Vlimit-Vdp') and a lower limit value (-Vlimit-Vdp'), and outputs a limited d-axis integral output Vdi' based on the comparison result. do.
- the limiter 110d limits the value of Vdi when the d-axis integral output Vdi exceeds the upper limit value (Vlimit-Vdp') or falls below the lower limit value (-Vlimit-Vdp'), and after the limit It is output as the d-axis integral output Vdi'. Furthermore, when the d-axis integral output Vdi is greater than or equal to the lower limit value and less than or equal to the upper limit value, the limiter 110d outputs the value of Vdi as it is as the limited d-axis integral output Vdi'. The value of the post-limited d-axis integral output Vdi' output by the limiter 110d is input to the adder 111d.
- the reason why the limiter 110d makes a restriction determination using the d-axis proportional output Vdp' after restriction is to prevent the d-axis integral output Vdi' after restriction from being accumulated excessively and to obtain the anti-windup effect. It's for a reason.
- the adder 111d adds the limited d-axis proportional output Vdp' and the limited d-axis integral output Vdi' to obtain the d-axis voltage command value vd.
- the obtained voltage command value vd is input to the coordinate converter 25 as shown in FIG.
- the q-axis voltage command value calculator 24q includes a q-axis proportional amplifier 101q, a limiter 102q, a q-axis integral amplifier 103q, a high pass filter (HPF) 104q, and a response angular frequency amplifier 105q. It includes an inductance amplifier 106q, a multiplier 107q, an adder 108q, an integrator 109q, a limiter 110q, and an adder 111q.
- Kpq is a q-axis proportional gain that is multiplied so that the actually flowing rotating machine current has a preferable response to the current command value iq_ref.
- Kpq ⁇ cc ⁇ Lq.
- ⁇ cc is the response angular frequency
- Lq is the q-axis inductance.
- Kpq is not limited to ⁇ cc ⁇ Lq, and may be adjusted as appropriate by actually measuring the responsiveness of the rotating machine current that actually flows with respect to the current command value iq_ref.
- the q-axis proportional output Vqp calculated by the q-axis proportional amplifier 101q is input to the limiter 102q.
- the limiter 102q compares the q-axis proportional output Vqp with an upper limit value (Vlimit) and a lower limit value (-Vlimit), and outputs a limited q-axis proportional output Vqp' based on the comparison result.
- the limiter 102q limits the value of Vqp when the q-axis proportional output Vqp exceeds the upper limit value (Vlimit) or falls below the lower limit value (-Vlimit), and reduces the q-axis proportional output Vqp' after the limit. Output as . Furthermore, when the q-axis proportional output Vqp is greater than or equal to the lower limit value and less than or equal to the upper limit value, the limiter 102q outputs the value of Vqp as it is as the limited q-axis proportional output Vqp'. The value of the limited q-axis proportional output Vqp' output by the limiter 102q is input to the limiter 110q and the adder 111q.
- the value of Kiq is not limited to ⁇ cc ⁇ R, and may be adjusted as appropriate based on actual measurement results.
- the self-axis integral input Aiq calculated by the q-axis integral amplifier 103q is input to the adder 108q.
- the high-pass filter 104q reduces the low frequency component of the d-axis current deviation ed and outputs it to the response angular frequency amplifier 105q.
- the response angular frequency amplifier 105q multiplies the d-axis current deviation ed whose low frequency components have been reduced by the high-pass filter 104q by ⁇ cc, and outputs the result to the multiplier 107q.
- the inductance amplifier 106q multiplies the rotational angular velocity ⁇ by Ld and outputs the result to the multiplier 107d.
- the multiplier 107q multiplies the output of the response angular frequency amplifier 105d and the output of the inductance amplifier 106d to obtain the other axis integral input Biq.
- Multiplier 107q outputs other axis integral input Biq to adder 108q.
- the adder 108q obtains the q-axis integral input Ciq by adding the self-axis integral input Aiq and the other-axis integral input Biq. Adder 108q outputs q-axis integral input Ciq to integrator 109q. Integrator 109q performs an integral operation on q-axis integral input Ciq, and outputs the result to limiter 110q as q-axis integral output Vqi.
- the limiter 110q compares the q-axis integral output Vqi with an upper limit value (Vlimit-Vqp') and a lower limit value (-Vlimit-Vqp'), and outputs a limited q-axis integral output Vqi' based on the comparison result. do.
- the limiter 110q limits the value of Vqi when the q-axis integral output Vqi exceeds the upper limit value (Vlimit-Vqp') or falls below the lower limit value (-Vlimit-Vqp'), and It is output as a q-axis integral output Vqi'. Furthermore, when the q-axis integral output Vqi is greater than or equal to the lower limit value and less than or equal to the upper limit value, the limiter 110q outputs the value of Vqi as it is as the limited q-axis integral output Vqi'. The value of the limited q-axis integral output Vqi' output by the limiter 110q is input to the adder 111q.
- the reason why the limiter 110q makes a restriction determination using the q-axis proportional output Vqp' after the limit is to prevent the q-axis integral output Vqi' after the limit from being accumulated excessively, and to obtain an anti-windup effect. It's for a reason.
- the adder 111q adds the limited q-axis proportional output Vqp' and the limited q-axis integral output Vqi' to obtain the q-axis voltage command value vq.
- the obtained voltage command value vq is input to the coordinate converter 25.
- voltage command values vd and vq on the two rotational axes (d and q axes) and the rotor position ⁇ are input to the coordinate converter 25.
- the coordinate converter 25 coordinately transforms the voltage command values vd, vq based on the rotor position ⁇ , and calculates the voltage command values vu, vv, vw on the three-phase coordinates.
- the corrected voltage generator 26 generates corrected voltage command values vu', vv', vw' based on the voltage command values vu, vv, vw output from the coordinate converter 25 and the offset voltage voffset.
- FIG. 5 is a flowchart showing the processing performed by the corrected voltage generator 26 in the first embodiment.
- step S11 is first executed.
- the corrected voltage generator 26 selects the smallest value from among the voltage command values vu, vv, and vw, and sets that value as Vmin.
- step S12 the corrected voltage generator 26 sets the value of the offset voltage voffset to 0.5Vdc-Vmin.
- step S13 the corrected voltage generator 26 obtains corrected voltage command values vu', vv', vw' by subtracting the offset voltage voffset from the voltage command values vu, vv, vw, respectively.
- FIG. 6 is a diagram showing an example of waveforms of voltage command values vu, vv, vw and corrected voltage command values vu', vv', vw' in the first embodiment.
- the waveform graph of the voltage command values vu, vv, vw is shown on the upper side
- the waveform graph of the corrected voltage command values vu', vv', vw' is shown on the lower side.
- the DC bus voltage Vdc 10V.
- step S11 of FIG. 5 in addition to the process of selecting the smallest value from voltage command values vu, vv, vw and setting it as Vmin, Processing may also be performed in which the one with the largest value is selected and set as Vmax. Then, in step S12, processing may be performed to set voffset to "(Vmax+Vmin)/2".
- so-called two-phase modulation may be adopted by keeping the upper arm switching element corresponding to the phase with the maximum voltage command value among the three phases always in the on state.
- the corrected voltage command values vu', vv', vw' generated by the corrected voltage generator 26 through the above calculations are input to the PWM signal generator 27. Then, the PWM signal generator 27 performs PWM modulation on the corrected voltage command values vu', vv', and vw', and outputs the results to the inverter 12 as switching signals Gup to Gwn.
- FIG. 7 is a Bode diagram showing the transfer characteristic from the q-axis current command value iq_ref to the q-axis detected current value iq when the rotational angular velocity ⁇ is high in the control device 1 according to the first embodiment.
- a gain diagram is shown on the upper side
- a phase diagram is shown on the lower side.
- this disclosure indicates the transfer characteristic according to Embodiment 1
- the number of integrators included in the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q in the present disclosure is one each. Therefore, anti-windup processing can be performed more easily than when two integrators are used for one axis as in Patent Document 1. As a result, even if there is a sudden change in the current command values id_ref and iq_ref, it is possible to provide a stable control device 1 in which overshoot due to excessive accumulation of integral values is unlikely to occur. becomes. Further, according to the present disclosure, it is also possible to suppress the amount of calculation by the controller 13 compared to the case where two integrators are used for one axis.
- the control device 1 includes the inverter 12 that applies voltage to the AC rotating machine 10, the current detector 22 that detects the rotating machine current flowing through the rotating machine 10, and the rotating machine 10.
- the d-axis voltage command value calculator 24d calculates the voltage command value vd of the d-axis (first axis) of the two rotating axes of the machine 10, and the A q-axis voltage command value calculator 24q (second axis voltage command value calculator) that calculates the voltage command value vq of the second axis) is provided.
- the d-axis voltage command value calculator 24d calculates the d-axis current deviation ed (first deviation), which is the deviation between the current command value id_ref on the d-axis and the detected current value id on the d-axis, and the current command on the q-axis.
- An integral calculation is performed using the q-axis current deviation eq (second deviation), which is the deviation between the value iq_ref and the q-axis detected current value iq on the q-axis, and the d-axis voltage is calculated based on the result of the integral calculation. Calculate command value vd.
- the q-axis voltage command value calculator 24q performs an integral calculation using the q-axis current deviation eq and the d-axis current deviation ed, and calculates the q-axis voltage command value vq based on the result of the integral calculation. .
- the d-axis voltage command value calculator 24d calculates the rotational angular velocity ⁇ of the AC rotating machine, the q-axis inductance Lq, and the frequency response of the rotating machine current to the current command value with respect to the q-axis current deviation eq.
- the integral operation is performed using the value obtained by multiplying the response angular frequency ⁇ cc by the response angular frequency ⁇ cc. Thereby, a desired frequency response can be obtained without depending on the rotational angular velocity ⁇ of the rotating machine.
- the q-axis voltage command value calculator 24q adjusts the rotational angular velocity ⁇ of the AC rotating machine, the inductance Ld on the d-axis, and the frequency response of the rotating machine current to the current command value with respect to the d-axis current deviation ed.
- the integral operation is performed using the value obtained by multiplying the response angular frequency ⁇ cc by .
- the d-axis voltage command value calculator 24d executes the integral calculation using the result of reducing the low frequency component of the q-axis current deviation eq by the high-pass filter 104d. In this way, by reducing the low frequency component of the current deviation eq of the axis that is not the control target for the d-axis voltage command value calculator 24d (i.e., the q-axis), It becomes possible to set the current deviation ed to 0 (zero) on a steady basis. Similarly, the q-axis voltage command value calculator 24q executes the integral calculation using the result of reducing the low frequency component of the d-axis current deviation ed by the high-pass filter 104q.
- FIG. 8 is a block diagram showing a schematic configuration of a rotating machine control device 2 according to the second embodiment.
- the control device 2 differs from the control device 1 according to the first embodiment in that it includes an amplitude calculator 29.
- 9 and 10 are block diagrams respectively showing the configurations of the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q according to the second embodiment.
- the configurations of the d-axis voltage command value calculator 24d and the q-axis voltage command value calculator 24q are also different between the first embodiment and the second embodiment.
- the amplitude calculator 29 receives a d-axis voltage command value vd, a q-axis voltage command value vq, and a DC bus voltage Vdc.
- the amplitude calculator 29 calculates the voltage amplitude m based on the following formula (2-1).
- the d-axis voltage command value calculator 24d includes an amplifier 112d.
- the amplifier 112d multiplies the output from the multiplier 107d by K and inputs the result to the subtracter 108d.
- K is a limit gain multiplied when integrating and inputting the current deviation eq on the q-axis which is not the controlled object as viewed from the d-axis voltage command value calculator 24d.
- the voltage amplitude m is input to the amplifier 112d, and the value of the limiting gain K is determined based on the value of the voltage amplitude m.
- the voltage amplitude m is also input to the d-axis proportional amplifier 101d.
- This embodiment differs from Embodiment 1 in that the d-axis proportional gain Kpd and the limit gain K are varied in accordance with the voltage amplitude m.
- the q-axis voltage command value calculator 24q of the second embodiment includes an amplifier 112q.
- Amplifier 112q multiplies the output from multiplier 107q by K and inputs the result to adder 108q.
- "K" is a limit gain multiplied when integrating and inputting the current deviation ed on the d-axis, which is not the controlled object, as viewed from the q-axis voltage command value calculator 24q.
- the voltage amplitude m is input to the amplifier 112q, and the value of the limiting gain K is determined based on the value of the voltage amplitude m.
- the voltage amplitude m is also input to the q-axis proportional amplifier 101q.
- This embodiment differs from Embodiment 1 in that the q-axis proportional gain Kpq and the limit gain K are varied in accordance with the voltage amplitude m.
- FIG. 11 shows the relationship between voltage amplitude m, proportional gains Kpd, Kpq, and limiting gain K.
- the vertical axis of the upper graph in FIG. 11 is the proportional gains Kpd, Kpq, and the vertical axis of the lower graph is the limit gain K. Both on the upper and lower sides, the horizontal axis is the voltage amplitude m.
- m1 is the first voltage threshold
- m2 is the second voltage threshold.
- the proportional gains Kpd and Kpq are switched between a first proportional value Kp_H and a second proportional value Kp_L.
- the second proportional value Kp_L is smaller than the first proportional value Kp_H.
- the limit gain K is switched between a first limit value K_H and a second limit value K_L.
- the second limit value K_L is smaller than the first limit value K_H.
- the values of the proportional gains Kpd and Kpq are set to the second proportional value Kp_L. Further, when the voltage amplitude m is lower than the first voltage threshold m1, the proportional gains Kpd and Kpq are set to the first proportional value Kp_H.
- the limit gain K is set to the first limit value K_H. Further, when the voltage amplitude m is lower than the second voltage threshold m2, the limit gain K is set to the second limit value K_L.
- the first voltage threshold m1 is higher than the second voltage threshold m2. Therefore, when the values of proportional gains Kpd and Kpq are Kp_L, the value of limiting gain K is K_H.
- the proportional gains Kpd and Kpq are reduced. Control stability can be ensured even when the gains Kpd and Kpq are low.
- the proportional gains Kpd and Kpq are set high enough to ensure stability, so that control stability can be ensured even when non-interference control between the d and q axes is insufficient. It is set to the value Kp_H.
- the values of Kp_H and Kp_L are set so that the response from the current command values id_ref and iq_ref to the rotating machine currents iu, iv, and iw is good within the ranges of 300Hz to 1000Hz and 100Hz to 300Hz, respectively. be done.
- the value of K_H is set to 0.7 or more
- the value of K_L is set to 0.3 or less.
- Gxn shown in FIG. 12 shows an example of the waveform of any one of the switching signals Gun, Gvn, and Gwn in the lower arm switching elements Sun, Svn, and Swn.
- VRx indicates an example of the waveform of any one of the voltages VRu, VRv, and VRw across the shunt resistors Ru, Rv, and Rw.
- ringing occurs in the voltage VRx across the shunt resistor for several ⁇ s after the signal Gxn changes from 0 to 1. Ringing is a phenomenon in which the voltage across the shunt resistor fluctuates for a certain period of time when switching is performed in the inverter 12.
- the current detector 22 obtains the pre-conversion detection currents ius, ivs, and iws based on the voltages VRu, VRv, and VRw across the shunt resistor that include this ringing, the detection results will include errors. If the detected currents ius, ivs, and iws before conversion include errors, the detected current values id, iq after coordinate conversion also include errors.
- the on time of the corresponding lower arm switching elements Sun, Svn, and Swn must be longer than the time threshold Tmin set according to the ringing convergence time. preferable.
- the voltage input to the PWM signal generator 27 is set to Vdc ⁇ (Tc-Tmin)/Tc shown in the dashed line in FIG. It is good if it is below.
- the modified voltage commands vu', vv', vw' (that is, the voltages input to the PWM signal generator 27) are all below Vdc ⁇ (Tc-Tmin)/Tc. Therefore, it is possible to eliminate errors due to ringing and accurately obtain the pre-conversion detection currents ius, ivs, and iws based on the voltages VRu, VRv, and VRw across the shunt resistor.
- the detection method for determining the pre-conversion detection currents ius, ivs, and iws based on the voltages VRu, VRv, and VRw across the shunt resistors corresponding to the three phases in this manner is called "three-phase detection.”
- the value of the corrected voltage command vu' is larger than the value of Vdc ⁇ (Tc-Tmin)/Tc (hereinafter also referred to as "upper limit value").
- the difference between the time when Gun switches from 0 to 1 and the time at timing X becomes small. Therefore, the voltage VRu across the u-phase shunt resistor obtained at timing X includes the influence of ringing.
- the pre-conversion detection current for the phase in which the on-time of the switching signals Gun, Gvn, and Gwn of the lower arm switching elements is shorter than the time threshold Tmin may be generated from the other two phases.
- the relationship between the number of phases used for current detection and the voltage amplitude m is as follows. That is, when the voltage amplitude m is low and the instantaneous values of the three-phase corrected voltage commands vu', vv', and vw' are all below the upper limit value (Vdc ⁇ (Tc-Tmin)/Tc), "3 detection” is performed. Use. Alternatively, when the voltage amplitude m is high and the instantaneous value of any one of the three-phase corrected voltage commands vu', vv', and vw' exceeds the upper limit value (Vdc ⁇ (Tc-Tmin)/Tc), "2 phase detection.
- the value of the first voltage threshold m1 is set to "(Tc-Tmin)/Tc". It can be said that "(Tc-Tmin)/Tc” is a value obtained by dividing the above-mentioned upper limit "Vdc ⁇ (Tc-Tmin)/Tc" by Vdc and normalizing it.
- the voltage first threshold value m1 is set in this way, the following effects can be obtained.
- "two-phase detection" is used, and at that time, the proportional gains Kpd and Kpq are set to a low value Kp_L.
- the second voltage threshold m2 may be set to a value lower than the first voltage threshold m1. However, if the noise included in the detected value of the rotational angular velocity ⁇ is not a problem, switching the value of the limiting gain K at the second voltage threshold m2 is not necessarily necessary. Specifically, if the voltage amplitude m is equal to or greater than the first voltage threshold m1, the values of the proportional gains Kpd and Kpq are set to Kp_L; otherwise, the values of the proportional gains Kpd and Kpq are set to Kp_H, and the value of the limiting gain K is set to may be always set constant (K_H) regardless of the voltage amplitude m.
- the voltage applied to the rotating machine and the rotational speed (or rotational angular velocity ⁇ ) of the rotating machine are approximately proportional. Therefore, the proportional gains Kpd, Kpq and the limiting gain K may be switched using a threshold value related to the rotational speed (or rotational angular velocity ⁇ ) instead of the previously described threshold value related to the voltage amplitude m.
- a threshold value related to the rotational speed (or rotational angular velocity ⁇ ) instead of the previously described threshold value related to the voltage amplitude m.
- the rotation speed when the voltage amplitude m matches the voltage first threshold m1 is set as the rotation speed first threshold n1
- the rotation speed when the voltage amplitude m matches the voltage second threshold m2 is set as the rotation speed second threshold n2.
- the above-described switching of the proportional gains Kpd, Kpq or the limit gain K based on the comparison between the voltage amplitude m and the threshold values m1, m2 can be replaced with switching based on the comparison between the rotation speed and the threshold values n1, n2.
- the rotation angular velocity ⁇ when the voltage amplitude m matches the voltage first threshold m1 is set as the rotation angular velocity first threshold ⁇ 1
- the rotation angular velocity ⁇ when the voltage amplitude m matches the voltage second threshold m2 is set as the rotation angular velocity ⁇ .
- Two threshold values ⁇ 2 may be used.
- the switching of the proportional gains Kpd, Kpq or the limit gain K based on the comparison between the voltage amplitude m and the threshold values m1, m2 described above can be replaced with switching based on the comparison of the rotational angular velocity ⁇ and the ⁇ 1, ⁇ 2.
- switching according to the voltage amplitude m and switching according to the rotational speed (or rotational angular velocity ⁇ ) may be used together.
- the proportional gains Kpd and Kpq are switched based on the comparison between the voltage amplitude m and the first voltage threshold m1, and the rotation speed (or rotational angular velocity ⁇ ) and the rotational speed second threshold n2 (or the rotational angular velocity
- the limiting gain K may be switched based on a comparison with two threshold values ⁇ 2).
- proportional gains Kpd and Kpq are switched.
- the values of the proportional gains Kpd and Kpq may be kept constant at Kp_H regardless of the voltage amplitude m or the rotation speed.
- the proportional gains Kpd and Kpq are always set to large values (Kp_H) to control the system. May increase safety. Furthermore, when switching the values of the proportional gains Kpd and Kpq between Kp_L and Kp_H, they may be switched gradually with a slope so that the control does not become discontinuous. Similarly, when switching the value of the limit gain K between K_L and K_H, it may be changed gradually with a slope.
- the first axis voltage command value calculator (e.g. d-axis voltage command value calculator 24d) has a proportional gain (e.g. The voltage command value (for example, Vd) of the first axis is calculated using the value multiplied by Kpd).
- the proportional gain is switched between a first proportional value Kp_H and a second proportional value Kp_L that is smaller than the first proportional value Kp_H.
- the proportional gain is set to the second proportional value Kp_L.
- the first axis voltage command value calculator executes an integral operation using a value obtained by multiplying the second deviation by the limit gain K, and the limit gain K is the first limit value.
- K_H and a second limit value K_L that is smaller than the first limit value K_H. If the voltage amplitude m is less than or equal to a second voltage threshold m2 which is smaller than the first voltage threshold m1, or if the rotation speed of the AC rotating machine 10 is less than or equal to a second rotation speed threshold n2 which is smaller than the first rotation speed threshold n1.
- the limit gain K is set to the second limit value K_L.
- the inverter 12 also includes three sets of upper arm switching elements Sup, Svp, Swp, lower arm switching elements Sun, Svn, Swn, and shunt resistors Ru, Rv, respectively corresponding to three phases (U, V, W). , Rw.
- the current detector 22 detects the rotating machine currents iu, iv, and iw in the three phases based on the voltages VRu, VRv, and VRw across the corresponding shunt resistors. (that is, using “three-phase detection”). According to this configuration, it is possible to suppress the detection results of the rotating machine currents iu, iv, and iw from including errors due to the influence of ringing. Therefore, the AC rotating machine 10 can be controlled with high precision.
- the proportional gains Kpd and Kpq may be set to the first proportional value Kp_H, regardless of the voltage amplitude m, etc. In this case, the time period during which the rotating machine current remains excessively high can be shortened. Therefore, failure of the control device 2 can be prevented.
- the proportional gains Kpd and Kpq may be set to the first proportional value Kp_H, regardless of the voltage amplitude m, etc. In this case, it is possible to improve the stability of the system when a failure occurs and to suppress the occurrence of secondary failures.
- an electric power steering device 100 includes a control device 3, a handle 101, a rotating machine 10, and a torque detector 103. Electric power steering device 100 is mounted on a vehicle. The steering wheel 101 is operated by the driver. By operating the handle 101, the front wheels 102 of the vehicle are driven.
- the basic configuration of the control device 3 is the same as that of the control device 1 in Embodiment 1, so a detailed explanation will be omitted and the different points will be mainly described.
- the torque detector 103 detects the steering torque Ts of the steering wheel 101 by the driver, and outputs the detection result to the control device 3.
- the driving force of the rotating machine 10 is transmitted to the steering system 100s of the vehicle via the driving force transmission mechanism 104.
- the steering system 100s includes a steering wheel 101, a front wheel 102, and the like.
- the electric power steering device 100 uses the driving force generated by the rotating machine 10 as assist torque to assist the driver in steering the vehicle.
- the current command value calculator 21 in the control device 3 differs from the first embodiment in calculation regarding the torque current command value (q-axis current command value iq_ref), so this point will be described.
- the current command value calculator 21 receives the steering torque Ts and the vehicle running speed S, and calculates the q-axis current command value iq_ref based on these inputs.
- FIG. 15 is a graph showing the set value of the q-axis current command value iq_ref according to the steering torque Ts and the vehicle running speed S. As shown in this graph, the greater the steering torque Ts, the greater the value of the current command value iq_ref, and the greater the gradient of its change. Furthermore, the larger the vehicle speed S is, the smaller the current command value iq_ref becomes. Note that the value of the current command value iq_ref may be determined by further taking into account the damping torque, etc., determined based on the rotational angular velocity ⁇ .
- the lower the vehicle speed S the greater the gradient of the q-axis current command value iq_ref with respect to the steering torque Ts.
- the influence on the q-axis current command value iq_ref becomes large, causing vibrations and noise from the rotating machine 10, or an unpleasant feeling when touching the steering wheel 101. Leads to.
- the proportional gain Kpd in the d-axis voltage command value calculation unit 24d and the proportional gain Kpd in the q-axis voltage command value calculation unit 24q are calculated according to the traveling speed S of the vehicle.
- Kpq is varied as shown in FIG. "Kp_H1" is referred to as a first speed reference value, and "Kp_L1" is referred to as a second speed reference value.
- the second speed reference value Kp_L1 is smaller than the first speed reference value Kp_H1.
- the values of proportional gains Kpd and Kpq are set to Kp_L1.
- the values of proportional gains Kpd and Kpq low, it is possible to suppress the q-axis current command value iq_ref from sensitively reacting to pulsations in the steering torque Ts.
- the q-axis current command value iq_ref is less affected by the pulsation of the steering torque Ts, so the proportional gains Kpd and Kpq are set to a high value Kp_H1.
- the electric power steering device 100 includes the control device 3, the AC rotating machine 10, and the driving force transmission mechanism 104 that transmits the driving force of the AC rotating machine 10 to the steering system 100s of the vehicle. , is provided. With such a configuration, it is possible to provide the electric power steering device 100 that achieves both quietness and steering stability.
- the proportional gains Kpd and Kpq are switched between the first speed reference value Kp_H1 and the second speed reference value Kp_L1, which is smaller than the first speed reference value Kp_H1.
- the voltage command value calculation unit 24 sets the proportional gains Kpd and Kpq to a value lower than the first speed reference value Kp_H1 when the traveling speed S of the vehicle is smaller than the threshold value s2. According to this configuration, quietness can be improved in a situation where steering noise is likely to be heard and the vehicle speed is low.
- an electric power steering device 100 includes a control device 3 similar to that of the third embodiment.
- Embodiment 4 differs from the technique described in Embodiment 3 in that the detected value input to the voltage command value calculation unit 24 is changed from the vehicle running speed S to the steering torque Ts, and the voltage command value calculation The difference is that some of the calculation contents in the section 24 are different.
- the other points are the same as those in Embodiment 3, so the explanation will be omitted.
- ⁇ Ts is the amount of change in steering torque Ts per unit time
- K_H1 is the first torque reference value
- K_L1 is the second torque reference value.
- the second torque reference value K_L1 is smaller than the first torque reference value K_H1.
- the limit gain K varies in the range of K_L1 to K_H1 depending on the magnitude of the amount of change ⁇ Ts. Specifically, when ⁇ Ts is less than or equal to the first torque threshold ⁇ Ts1, the value of the limit gain K is set to K_L1. When ⁇ Ts is greater than or equal to the second torque threshold ⁇ Ts2, the value of the limit gain K is set to K_H1.
- the horizontal axis is ⁇ Ts.
- the above gradient ( ⁇ iq_ref/ ⁇ Ts) is referred to as a "current torque gradient" in this specification.
- the current torque gradient is the ratio of the amount of change in the q-axis current command value iq_ref ( ⁇ iq_ref) to the amount of change in the steering torque Ts ( ⁇ Ts).
- the proportional gains Kpd and Kpq may be set to a small value Kp_L1.
- the proportional gains Kpd and Kpq may be set to a small value (for example, Kp_L1).
- the result of the rotational angular velocity ⁇ passing through a low-pass filter may be input.
- the cutoff frequency of the low-pass filter is preferably higher than the upper limit of the steering frequency of the electric power steering device 100 (for example, 5 Hz).
- the introduction of non-interference control has the effect of reducing abnormal noises and vibrations of the rotating machine 10 caused by noise components included in the rotational angular velocity ⁇ . Therefore, a quiet electric power steering device 100 can be provided.
- each of the components of the rotating machine control devices 1 to 4 and the electric power steering device 100 described above has a computer system therein. Then, a program for realizing the functions of each component of the rotating machine control devices 1 to 4 and the electric power steering device 100 described above is recorded on a computer-readable recording medium, and the program recorded on this recording medium is recorded. may be loaded into a computer system and executed to perform processing in each of the components of the rotating machine control devices 1 to 4 and the electric power steering device 100 described above.
- “reading a program recorded on a recording medium into a computer system and executing it” includes installing the program on the computer system.
- the "computer system” herein includes an OS and hardware such as peripheral devices.
- a "computer system” may include a plurality of computer devices connected via the Internet or a network including a communication line such as a WAN, LAN, or a dedicated line.
- a communication line such as a WAN, LAN, or a dedicated line.
- computer-readable recording medium refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems.
- the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM.
- the recording medium also includes a recording medium provided internally or externally that can be accessed from the distribution server to distribute the program.
- the program may be divided into a plurality of parts, downloaded at different timings, and then combined with each component of the rotating machine control devices 1 to 4 and the electric power steering device 100.
- the distribution servers that distribute each program may be different.
- a "computer-readable recording medium” refers to a storage medium that retains a program for a certain period of time, such as volatile memory (RAM) inside a computer system that is a server or client when a program is transmitted via a network. This shall also include things.
- the above-mentioned program may be for realizing a part of the above-mentioned functions.
- it may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.
- Control device 10 ... AC rotating machine 12... Inverter 22... Current detector 24d, 24q... (1st axis voltage command value calculator, 2nd axis voltage command value calculator) 100... Electric power steering device 104... Driving force transmission mechanism id, iq...Detected current value id_ref, iq_ref...Current command value iq_ref...Torque current command value iu, iv, iw...Rotating machine current K...Limit gain K_H...First limit value K_L...Second limit value Kp_H ...First proportional value Kp_H1...First speed reference value Kp_L...Second proportional value Kp_L1...Second speed reference value Kpd, Kpq...Proportional gain Ld...D-axis inductance m...Voltage amplitude m1...Voltage first threshold m2...Voltage second threshold n1...Rotation speed first threshold n2...Rotation speed
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
ここで、特許文献1の構成では、例えばd軸の電圧指令値を演算するにあたり、電流PI制御器における積分器での演算結果と、非干渉誤差補正器における積分器での演算結果と、を用いる。このように、1つの制御対象値(例えばd軸の電圧指令値)に対して2つの積分器での演算結果を用いる場合、アンチワインドアップを適切に行うことが難しい。その結果として、制御が不安定になるという課題がある。
図1は、実施の形態1に係る回転機の制御装置の概略構成を示すブロック図である。図1に示す通り、制御装置1は、回転子位置検出器11、インバータ12、及び制御器13を備えている。制御装置1は、制御装置1の外部から入力される制御指令としてのトルク指令T_refに基づいて、回転機10を制御する。
シャント抵抗Ruは、回転機10の巻線Uに流れる電流(回転機電流)iuに比例した両端電圧VRu(=-Ru×iu)を制御器13に出力する。シャント抵抗Rvは、回転機10の巻線Vに流れる電流(回転機電流)ivに比例した両端電圧VRv(=-Rv×iv)を制御器13に出力する。シャント抵抗Rwは、回転機10の巻線Wに流れる電流(回転機電流)iwに比例した両端電圧VRw(=-Rw×iw)を制御器13に出力する。本明細書および図面では、両端電圧VRu、VRv、VRwを総称して、「両端電圧VRu~VRw」と表記する場合がある。
尚、インバータ12は、回転機10と一体化されていてもよい。一体化されたインバータ12および回転機10を、パワーパックと呼ぶ。
電流指令値演算器21は、トルク指令T_ref、直流母線電圧Vdc、および回転角速度ωに基づいて、電流指令値id_ref,iq_refを演算する。電流指令値id_ref,iq_refは、回転機10に通電する電流の指令値(目標値)である。id_refは「弱め界磁電流指令値」とも呼ばれ、iq_refは「トルク電流指令値」とも呼ばれる。電流指令値演算器21が実行する演算手法としては、公知のMTPA(Maximum Torque Per Ampere)制御、MTPV(Maximum Torque Per Voltage)制御、および弱め磁束制御を、運転範囲(速度-トルク特性の範囲)毎に適切に組み合わせて用いてもよい。なお、回転角速度ωを回転子の回転数に変換し、回転数を用いて各制御を行ってもよい。
以下、電圧指令値演算部24について詳細を説明する。
第1偏差演算器24aは、d軸電流指令値id_refとd軸検出電流値idとの偏差であるd軸電流偏差edを演算する。第2偏差演算器24bは、q軸電流指令値iq_refとq軸検出電流値iqとの偏差であるq軸電流偏差eqを演算する。第1偏差演算器24aが演算したd軸電流偏差edの値は、d軸電圧指令値演算器24dおよびq軸電圧指令値演算器24qに入力される。第2偏差演算器24bが演算したq軸電流偏差eqの値は、d軸電圧指令値演算器24dおよびq軸電圧指令値演算器24qに入力される。
以下、図3を用いて、d軸電圧指令値演算器24dについて説明する。d軸電圧指令値演算器24dは、d軸比例増幅器101dと、制限器102dと、d軸積分増幅器103dと、高域通過フィルタ(HPF:High Pass Filter)104dと、応答角周波数増幅器105dと、インダクタンス増幅器106dと、乗算器107dと、減算器108dと、積分器109dと、制限器110dと、加算器111dと、を備えている。
(A) Vdp<-Vlimitの場合,Vdp’=-Vlimit
(B) -Vlimit≦Vdp≦Vlimitの場合,Vdp’=Vdp
(C) Vlimit<Vdpの場合,Vdp’=Vlimit
応答角周波数増幅器105dは、高域通過フィルタ104dによって低周波成分が低減されたq軸電流偏差eqを、ωcc倍して、乗算器107dに出力する。
乗算器107dは,応答角周波数増幅器105dの出力とインダクタンス増幅器106dの出力とを乗算することで、他軸積分入力Bidを求める。乗算器107dは、他軸積分入力Bidを減算器108dに出力する。
積分器109dは,d軸積分入力Cidに対して積分演算を行い,その結果をd軸積分出力Vdiとして制限器110dに出力する。
(D) Vdi<-Vlimit-Vdp’の場合,Vdi’=-Vlimit-Vdp’
(E) -Vlimit-Vdp’≦Vdi≦Vlimit-Vdp’の場合,Vdi’=Vdi
(F) Vlimit-Vdp’<Vdiの場合,Vdi’=Vlimit-Vdp’
加算器111dは,制限後d軸比例出力Vdp’と制限後d軸積分出力Vdi’とを加算して,d軸の電圧指令値vdを求める。求められた電圧指令値vdは、図1に示す通り、座標変換器25に入力される。
制限器102qが行う具体的な演算は、以下の通りである。
(G) Vqp<-Vlimit の場合,Vqp’=-Vlimit
(H) -Vlimit≦Vqp≦Vlimit の場合,Vqp’=Vqp
(I) Vlimit<Vqp の場合,Vqp’=Vlimit
応答角周波数増幅器105qは、高域通過フィルタ104qによって低周波成分が低減されたd軸電流偏差edを、ωcc倍して、乗算器107qに出力する。
乗算器107qは,応答角周波数増幅器105dの出力とインダクタンス増幅器106dの出力とを乗算することで、他軸積分入力Biqを求める。乗算器107qは、他軸積分入力Biqを加算器108qに出力する。
積分器109qは,q軸積分入力Ciqに対して積分演算を行い,その結果をq軸積分出力Vqiとして制限器110qに出力する。
(J) Vqi<-Vlimit-Vqp’の場合,Vqi’=-Vlimit-Vqp’
(K) -Vlimit-Vqp’≦Vdi≦Vlimit-Vqp’の場合,Vqi’=Vqi
(L) Vlimit-Vqp’<Vqiの場合,Vqi’=Vlimit-Vqp’
加算器111qは,制限後q軸比例出力Vqp’と制限後q軸積分出力Vqi’とを加算して,q軸の電圧指令値vqを求める。求められた電圧指令値vqは、座標変換器25に入力される。
次に、ステップS12において、修正電圧生成器26は、オフセット電圧voffsetの値を、0.5Vdc-Vminに設定する。
次に、ステップS13において、修正電圧生成器26は、電圧指令値vu,vv,vwからオフセット電圧voffsetをそれぞれ減算することで、修正電圧指令値vu′,vv′,vw′を求める。
次に、本開示における実施の形態2について説明するが、基本的な構成は実施の形態1と同様である。このため、実施の形態1と重複する部分については説明を省略し、異なる点を中心に説明する。
図8は、実施の形態2に係る回転機の制御装置2の概略構成を示すブロック図である。図8に示すように、制御装置2は、振幅演算器29を備える点で、実施の形態1に係る制御装置1と異なる。また、図9、図10は、実施の形態2に係るd軸電圧指令値演算器24dおよびq軸電圧指令値演算器24qの構成をそれぞれ示すブロック図である。d軸電圧指令値演算器24dおよびq軸電圧指令値演算器24qの構成も、実施の形態1と実施の形態2とで異なっている。
m={(vd2+vq2)/(Vdc/2)}0.5 …(2-1)
比例ゲインKpd,Kpqは、第1比例値Kp_Hと、第2比例値Kp_Lと、の間で切り替えられる。第2比例値Kp_Lは第1比例値Kp_Hよりも小さい。
制限ゲインKは、第1制限値K_Hと、第2制限値K_Lと、の間で切り替えられる。第2制限値K_Lは第1制限値K_Hよりも小さい。
電圧振幅mが電圧第二閾値m2より高いとき、制限ゲインKは第1制限値K_Hに設定される。また、電圧振幅mが電圧第二閾値m2より低いとき、制限ゲインKは第2制限値K_Lに設定される。ここで、電圧第一閾値m1は電圧第二閾値m2より高い。よって,比例ゲインKpd,Kpqの値がKp_Lのとき,制限ゲインKの値はK_Hである。
また、比例ゲインKpd,Kpqの値をKp_LとKp_Hとの間で切り替える際は、制御が不連続にならないように、スロープ(傾き)をつけて徐々に切り替えてもよい。同様に、制限ゲインKの値をK_LとK_Hとの間で切り替える際も、スロープ(傾き)をつけて徐々に切り替えてもよい。
次に、実施の形態3について述べる。本実施の形態では、実施の形態1または2で説明した技術を、電動パワーステアリング装置に含まれる回転機の制御に適用する場合を説明する。
図14に示すように、本実施の形態に係る電動パワーステアリング装置100は、制御装置3と、ハンドル101と、回転機10と、トルク検出器103と、を備えている。電動パワーステアリング装置100は、車両に搭載される。ハンドル101は運転手によって操作される。ハンドル101の操作により、車両の前輪102が駆動させられる。制御装置3の基本的な構成は、実施の形態1における制御装置1と同様であるため、詳細な説明を省略し、異なる点を中心に述べる。
次に、実施の形態4について述べる。図17に示すように、本実施の形態に係る電動パワーステアリング装置100は、実施の形態3と同様の制御装置3を備えている。本実施の形態4は,実施の形態3で述べた技術に対し,電圧指令値演算部24に入力する検出値を車の走行速度Sから操舵トルクTsへと変更する点と,電圧指令値演算部24における演算内容の一部が異なる点と、において相違する。その他の点は、実施の形態3と同様であるため、説明を省略する。
Ld…d軸インダクタンス m…電圧振幅 m1…電圧第一閾値 m2…電圧第二閾値 n1…回転数第一閾値 n2…回転数第二閾値 Ru,Rv,Rw…シャント抵抗 S…走行速度 100s…車両の操舵系 Sun,Svn,Swn…下アームスイッチング素子 Sup,Svp,Swp…上アームスイッチング素子 Ts…操舵トルク vd,vq…(第1軸の電圧指令値、第2軸の電圧指令値) VRu,VRv,VRw…両端電圧 vu,vv,vw…電圧指令値 ΔTs…操舵トルクの変化量 ω…回転角速度 ω1…回転角速度第一閾値 ω2…回転角速度第二閾値 ωcc…応答角周波数
Claims (12)
- 交流回転機の制御装置であって、
前記交流回転機に電圧を印加するインバータと、
前記交流回転機を流れる回転機電流を検出する電流検出器と、
前記交流回転機の回転二軸における第1軸の電圧指令値を演算する第1軸電圧指令値演算器と、
前記回転二軸における第2軸の電圧指令値を演算する第2軸電圧指令値演算器と、を備え、
前記第1軸電圧指令値演算器は、前記第1軸における電流指令値と、前記回転機電流の前記第1軸における検出電流値と、の偏差である第1偏差、および、前記第2軸における電流指令値と、前記回転機電流の前記第2軸における検出電流値と、の偏差である第2偏差を用いて、積分演算を行い、前記積分演算の結果に基づいて前記第1軸の電圧指令値を演算する、交流回転機の制御装置。 - 前記第1軸電圧指令値演算器は、前記第2偏差に対し、前記交流回転機の回転角速度と、前記第2軸におけるインダクタンスと、前記電流指令値に対する前記回転機電流の周波数応答を調整するための応答角周波数と、を乗算した値を用いて、前記積分演算を実行する、請求項1に記載の交流回転機の制御装置。
- 前記第1軸電圧指令値演算器は、前記第2偏差の低周波成分を低減させた結果を用いて前記積分演算を実行する、請求項1または2に記載の交流回転機の制御装置。
- 前記第1軸電圧指令値演算器は、前記第1偏差に対して比例ゲインを乗算した値を用いて前記第1軸の前記電圧指令値を演算し、
前記比例ゲインは、第1比例値と、前記第1比例値よりも小さい第2比例値と、の間で切り替えられ、
前記電圧指令値に基づいて算出される電圧振幅が電圧第一閾値以上である場合、あるいは、前記交流回転機の回転数が回転数第一閾値以上である場合、あるいは、前記交流回転機の回転角速度が回転角速度第一閾値以上である場合に、前記比例ゲインが前記第2比例値に設定される、請求項1から3のいずれか1項に記載の交流回転機の制御装置。 - 前記第1軸電圧指令値演算器は、前記第2偏差に対して制限ゲインを乗算した値を用いて前記積分演算を実行し、
前記制限ゲインは、第1制限値と、前記第1制限値よりも小さい第2制限値と、の間で切り替えられ、
前記電圧振幅が前記電圧第一閾値よりも小さい電圧第二閾値以下である場合、あるいは、前記交流回転機の回転数が前記回転数第一閾値よりも小さい回転数第二閾値以下である場合、あるいは、前記交流回転機の回転角速度が回転角速度第一閾値よりも小さい回転角速度第二閾値以下である場合に、前記制限ゲインが前記第2制限値に設定される、請求項4に記載の交流回転機の制御装置。 - 前記インバータは、3つの相にそれぞれ対応する、3組の上アームスイッチング素子、下アームスイッチング素子、およびシャント抵抗を備え、
前記電流検出器は、前記電圧振幅が前記電圧第一閾値よりも小さいとき、前記3つの相における前記回転機電流をそれぞれの対応する前記シャント抵抗の両端電圧に基づいて検出する、請求項4または5に記載の交流回転機の制御装置。 - 前記第1軸電圧指令値演算器は、前記回転機電流が閾値を超えた場合に、前記比例ゲインを前記第1比例値に設定する、請求項4から6のいずれか1項に記載の交流回転機の制御装置。
- 前記第1軸電圧指令値演算器は、前記交流回転機の制御装置において、少なくとも1か所に故障が生じた場合に、前記比例ゲインを前記第1比例値に設定する、請求項4から7のいずれか1項に記載の交流回転機の制御装置。
- 請求項1から8のいずれか1項に記載の交流回転機の制御装置と、
前記交流回転機と、
前記交流回転機の駆動力を車両の操舵系に伝達する駆動力伝達機構と、を備える、電動パワーステアリング装置。 - 前記第1軸電圧指令値演算器は、前記第1偏差に対して比例ゲインを乗算した値を用いて前記第1軸の前記電圧指令値を演算し、
前記比例ゲインは、第1速度参照値と、前記第1速度参照値よりも小さい第2速度参照値と、の間で切り替えられ、
前記第1軸電圧指令値演算器は、車両の走行速度が閾値よりも小さい場合に、前記比例ゲインを前記第1速度参照値よりも小さい値に設定する、請求項9に記載の電動パワーステアリング装置。 - 前記第1軸電圧指令値演算器は、前記電流指令値が閾値以下の場合、あるいは、操舵トルクが閾値以下の場合、あるいは、操舵トルクとトルク電流指令値との関係を表すグラフにおける勾配が閾値より小さい場合、あるいは、操舵トルクの単位時間あたりの変化量が閾値より小さい場合に、前記比例ゲインを前記第1速度参照値よりも小さい値に設定する、請求項10に記載の電動パワーステアリング装置。
- 前記第1軸電圧指令値演算器は、カットオフ周波数が前記電動パワーステアリング装置の操舵周波数の上限値より高い低域通過フィルタに、前記交流回転機の回転角速度を通した結果を用いて前記積分演算を実行する、請求項9から11のいずれか1項に記載の電動パワーステアリング装置。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024507286A JP7625135B2 (ja) | 2022-03-16 | 2022-03-16 | 交流回転機の制御装置および電動パワーステアリング装置 |
| US18/845,195 US20250187651A1 (en) | 2022-03-16 | 2022-03-16 | Control device for ac rotating machine and electric power steering device |
| PCT/JP2022/011851 WO2023175760A1 (ja) | 2022-03-16 | 2022-03-16 | 交流回転機の制御装置および電動パワーステアリング装置 |
| CN202280091431.6A CN118786622A (zh) | 2022-03-16 | 2022-03-16 | 交流旋转电机的控制装置及电动助力转向装置 |
| EP22932040.3A EP4496207A4 (en) | 2022-03-16 | 2022-03-16 | Control device for ac rotating machine and electric power steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/011851 WO2023175760A1 (ja) | 2022-03-16 | 2022-03-16 | 交流回転機の制御装置および電動パワーステアリング装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023175760A1 true WO2023175760A1 (ja) | 2023-09-21 |
Family
ID=88022529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/011851 Ceased WO2023175760A1 (ja) | 2022-03-16 | 2022-03-16 | 交流回転機の制御装置および電動パワーステアリング装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250187651A1 (ja) |
| EP (1) | EP4496207A4 (ja) |
| JP (1) | JP7625135B2 (ja) |
| CN (1) | CN118786622A (ja) |
| WO (1) | WO2023175760A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1198900A (ja) * | 1997-09-22 | 1999-04-09 | Hitachi Ltd | 電力変換器の電流制御装置 |
| JP2007274863A (ja) * | 2006-03-31 | 2007-10-18 | Aisin Aw Co Ltd | 電動駆動制御装置及び電動駆動制御方法 |
| JP2010119245A (ja) | 2008-11-14 | 2010-05-27 | Toyota Central R&D Labs Inc | 交流電動機の制御装置 |
| JP2014093889A (ja) * | 2012-11-05 | 2014-05-19 | Yaskawa Electric Corp | 交流電動機の制御装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016178262A1 (ja) * | 2015-05-01 | 2016-11-10 | 三菱電機株式会社 | 電動パワーステアリング制御装置および電動パワーステアリング制御方法 |
| WO2019106729A1 (ja) * | 2017-11-28 | 2019-06-06 | 日産自動車株式会社 | 電動機の制御方法、及び電動機の制御装置 |
-
2022
- 2022-03-16 US US18/845,195 patent/US20250187651A1/en active Pending
- 2022-03-16 JP JP2024507286A patent/JP7625135B2/ja active Active
- 2022-03-16 EP EP22932040.3A patent/EP4496207A4/en active Pending
- 2022-03-16 WO PCT/JP2022/011851 patent/WO2023175760A1/ja not_active Ceased
- 2022-03-16 CN CN202280091431.6A patent/CN118786622A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1198900A (ja) * | 1997-09-22 | 1999-04-09 | Hitachi Ltd | 電力変換器の電流制御装置 |
| JP2007274863A (ja) * | 2006-03-31 | 2007-10-18 | Aisin Aw Co Ltd | 電動駆動制御装置及び電動駆動制御方法 |
| JP2010119245A (ja) | 2008-11-14 | 2010-05-27 | Toyota Central R&D Labs Inc | 交流電動機の制御装置 |
| JP2014093889A (ja) * | 2012-11-05 | 2014-05-19 | Yaskawa Electric Corp | 交流電動機の制御装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4496207A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7625135B2 (ja) | 2025-01-31 |
| EP4496207A1 (en) | 2025-01-22 |
| CN118786622A (zh) | 2024-10-15 |
| EP4496207A4 (en) | 2025-04-23 |
| JPWO2023175760A1 (ja) | 2023-09-21 |
| US20250187651A1 (en) | 2025-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4205157B1 (ja) | 電動機の制御装置 | |
| JP5130716B2 (ja) | モータ制御装置および電気式動力舵取装置 | |
| CN101529714B (zh) | 永磁同步电动机的矢量控制装置 | |
| JP4988329B2 (ja) | 永久磁石モータのビートレス制御装置 | |
| JP2007159368A (ja) | モータ駆動システムの制御装置 | |
| JP2010119245A (ja) | 交流電動機の制御装置 | |
| JP2009189146A (ja) | 電動モータの制御装置 | |
| JP2009136034A (ja) | モータ制御装置 | |
| JP7625135B2 (ja) | 交流回転機の制御装置および電動パワーステアリング装置 | |
| JP7706640B2 (ja) | 交流回転機の制御装置および電動パワーステアリング装置 | |
| JP5899787B2 (ja) | 回転電機制御システム | |
| JP7724947B2 (ja) | 交流回転機の制御装置および電動パワーステアリング装置 | |
| CN119856387A (zh) | 电力转换器控制装置以及电力转换装置 | |
| JP7766821B2 (ja) | 交流モータの制御装置および電動パワーステアリング装置 | |
| JP6680104B2 (ja) | モータの制御装置、及び、制御方法 | |
| JP7634807B2 (ja) | 回転機の制御装置及び電動パワーステアリング装置 | |
| JP7771830B2 (ja) | モータ制御方法及びモータ制御装置 | |
| WO2020152785A1 (ja) | モータ制御方法、及び、モータ制御装置 | |
| JP2004222437A (ja) | Dcブラシレスモータの制御装置 | |
| JP6051704B2 (ja) | モータ制御装置 | |
| JP7209656B2 (ja) | モータ制御装置 | |
| JP2013048499A (ja) | 回転機の制御装置 | |
| JP2019161854A (ja) | モータ制御方法、及び、モータ制御装置 | |
| JP2021048739A (ja) | インバータ装置及びインバータ装置の制御方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22932040 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2024507286 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202280091431.6 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18845195 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022932040 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2022932040 Country of ref document: EP Effective date: 20241016 |
|
| WWP | Wipo information: published in national office |
Ref document number: 18845195 Country of ref document: US |