WO2008053675A1 - Appareil de commande pour véhicule à moteur électrique - Google Patents
Appareil de commande pour véhicule à moteur électrique Download PDFInfo
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- WO2008053675A1 WO2008053675A1 PCT/JP2007/069725 JP2007069725W WO2008053675A1 WO 2008053675 A1 WO2008053675 A1 WO 2008053675A1 JP 2007069725 W JP2007069725 W JP 2007069725W WO 2008053675 A1 WO2008053675 A1 WO 2008053675A1
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- current
- inverter
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
- B60L15/025—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using field orientation; Vector control; Direct Torque Control [DTC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
-
- 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
- H02P21/24—Vector control not involving the use of rotor position or rotor speed sensors
- H02P21/26—Rotor flux based control
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/01—Asynchronous machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a control device for an electric vehicle using an AC motor driven by a variable voltage variable frequency inverter (hereinafter also referred to as a VWF inverter) without using a speed detector, and in particular.
- the present invention relates to a technique for detecting an abnormality in a speed estimation value required for the control.
- Patent Document 1 Japanese Patent No. 3732784 (Fig. 6, Formula (28))
- Patent Document 2 JP 2004-64905 A (Fig. 1)
- the current reference IL * is calculated using the active power reference P * and the DC voltage Vdc, and the value IL obtained by detecting the overhead line current The deviation of the current reference IL * is calculated, and when this deviation is between the lower limit value ⁇ and the upper limit value (in this case, it is determined that the speed estimation value is abnormal.
- the current reference IL * is obtained by dividing the active power reference ⁇ * by the DC voltage Vdc. Strictly speaking, the current reference IL * is the input current of the inverter that is not the overhead line current. As a result, it is relatively easy to determine the lower limit ⁇ and the upper limit / 3 when calculating the deviation from the overhead wire current and the overhead current reference. Since the current deviation is calculated, it is very difficult to determine the setting constant for the lower limit ⁇ and the upper limit ().
- the active power standard ⁇ * must be changed when the AC motor or WVF inverter changes, so the lower limit ⁇ and upper limit / 3 must be changed each time.
- the inverter input current will flow for a short time, but the input current that has flowed and the operation command signal turned off will be discriminated, and abnormal operation will occur. There is a high possibility that it will be judged.
- the inverter input current becomes transient by stopping the inverter suddenly. Therefore, a current in a direction different from the operation command signal flows, and this causes the anomaly detection system to work and false detection. Such a false detection reduces the reliability of the system.
- the present invention has been made to solve the above-described problem, and detects a speed estimation abnormality with a simple configuration by detecting a sign of an overhead line current or a sign of an inverter current.
- the system can be configured to easily determine the constants to be set, and even if the AC motor or variable voltage variable frequency inverter is changed, it is possible to detect abnormalities in the estimated speed value without changing the set constants.
- An object is to provide a control device.
- Another object of the present invention is to provide an electric vehicle control device that can accurately and reliably detect an abnormality in a speed estimation value without erroneously detecting it.
- An electric vehicle control apparatus includes a VWF inverter (variable voltage variable frequency inverter) that converts direct current to alternating current of any frequency based on a power line command or a brake command, and an alternating current side of the WVF inverter.
- VWF inverter variable voltage variable frequency inverter
- An electric vehicle control device comprising speed sensorless vector control means for estimating a rotation speed of an electric motor and controlling the WVF inverter based on the estimated value, wherein the overhead wire current detection means detects an overhead wire current or One of the DC current detection means for detecting the inverter current of the WVF inverter and the power of either the power command or the brake command when the WVF inverter is in operation, one command and the DC current detection means DC detected by either the detected overhead wire current or the inverter current and the predetermined current setting ⁇ I And detecting the abnormal sign of the speed sensorless vector control means based on the sign of the direct current, and stopping the VWF invert
- An electric vehicle control apparatus includes a WVF inverter (variable voltage variable frequency inverter) for converting a direct current to an alternating current of an arbitrary frequency based on a power line command or a brake command, and the WVF inverter.
- a WVF inverter variable voltage variable frequency inverter
- An AC motor connected to the AC side of the VWF, a filter capacitor connected in parallel to the DC side of the VWF inverter, current detection means for detecting current information on the AC side of the WVF inverter, and a filter capacitor
- the rotational speed of the AC motor is estimated from voltage detection means for detecting DC voltage information, the output voltage command of the WVF inverter and the output current of the WVF inverter, and based on the estimated value, the An electric vehicle control device equipped with a speed sensor-less solid-state control means for controlling a WVF inverter, wherein the overhead wire current estimation means for Any one of the DC current estimation means for estimating the inverter current of the WVF inverter, and any one of the command of the bank command or the brake command and the DC current estimation means when the WVF inverter is in operation.
- the sign of the DC current estimated value is calculated from the estimated current of the overhead wire or the estimated value of the inverter current, one DC current estimated value and a predetermined current setting value, and the sign of the DC current estimated value Speed sensorless vector control means is abnormal And a gate stop means for stopping the VWF inverter when the abnormal operation detection means detects an abnormality.
- control apparatus for an electric vehicle of the present invention it is possible to detect an abnormality in the speed estimation direction, that is, an abnormality in the speed sensorless vector control means with a simple and low-cost configuration. It is possible to prevent the breakdown of parts.
- setting constants for abnormality determination can be easily set, and even if the AC motor or variable voltage variable frequency inverter is changed, it is possible to detect an abnormality in the speed estimation value without changing the setting constant. it can.
- a highly reliable electric vehicle control device can be obtained.
- FIG. 1 is a diagram showing a configuration of a control device for an electric vehicle according to a first embodiment. [0013] FIG.
- FIG. 2 is a diagram showing a configuration of unauthorized operation detection means in the first embodiment.
- FIG. 3 is a diagram showing a configuration of gate stop means in the first embodiment.
- FIG. 4 is a diagram for explaining the operation of each parameter of the illegal operation detecting means during the wake-up in the first embodiment.
- FIG. 5 is an operation explanatory diagram of each parameter of the unauthorized operation detection means during regeneration in the first embodiment.
- FIG. 6 is a diagram showing a configuration of an electric vehicle control device according to a second embodiment.
- FIG. 7 is a diagram showing a configuration of overhead wire current estimation means in the second embodiment.
- FIG. 8 is a circuit configuration diagram of a VWF inverter used in the present invention.
- FIG. 9 is a diagram showing a configuration of a control device for an electric vehicle according to a third embodiment.
- FIG. 10 is a diagram showing a configuration of unauthorized operation detection means in the third embodiment.
- FIG. 11 is a diagram showing a configuration of gate stop means in the third embodiment.
- FIG. 12 is a diagram showing a configuration of overhead wire current condition setting means during regeneration in the third embodiment.
- FIG. 13 A diagram showing a configuration of the regeneration time element means in the third embodiment.
- FIG. 15 is a diagram showing control mode switching in the electric vehicle control device according to the third embodiment.
- FIG. 16 is a diagram showing a configuration of the electric vehicle control device according to the fourth embodiment.
- FIG. 17 A diagram showing a configuration of the control device for an electric vehicle according to the fifth embodiment.
- VWF inverter VWF inverter
- Means for detecting illegal frauds Means for detecting illegal regeneration
- FIG. 1 is a diagram showing the configuration of the electric vehicle control device according to the first embodiment.
- a brake command B * which will be described later, as an example of a control device for an electric vehicle that operates in response to the power command P *.
- Noletako Connected to the positive potential of SA5. Further, the negative side potential of the direct sensor 5 is grounded to the rail 9 via the wheel 8.
- a variable voltage variable frequency inverter (hereinafter also referred to as a WVF inverter) 6 for converting a direct current into an alternating current of an arbitrary frequency is connected in parallel with the direct current filter capacitor 5, and this WVF inverter 6 is an induction motor.
- a three-phase voltage is applied to an AC motor 7.
- AC-side current detection means 10 detects the phase currents iu and iv generated in the AC motor 7.
- the force S is used to determine the w-phase current from the detected currents for the u and v2 phases.
- the AC motor 7 and the wheel 8 are independent forces. This is illustrated for the sake of convenience, and actually the AC motor 7 is connected to the wheel 8 via a gear. The wheel 8 is connected to the rail 9.
- an overhead line current detection means 4 for detecting a current Is flowing from the overhead line 1 to the DC filter rear tutor 3 is provided, and the overhead line current value Is detected by the overhead line current detection means 4 is detected as an illegal operation. Means (details will be described later).
- the overhead wire current value detected by the overhead wire current detection means 4 Is force When the current flows from the overhead wire 1 through the VWF inverter 6 to the AC motor 7 (flowing in the direction of the arrow in FIG. 1) is defined as the positive direction,
- the overhead wire current Is during the caulking operation flows in the positive direction (the current value is positive).
- the overhead wire current Is during regenerative operation flows in the negative direction (current value is negative) flowing from the AC motor 7 through the WVF inverter 6 to the overhead wire 1. That is, it flows in the direction opposite to the arrow in FIG.
- the speed sensorless vector control means 11 estimates the rotational speed of the AC motor 7 from the output voltage command of the WVF inverter 6 and the output current of the VV VF inverter 6, and controls the VWF inverter 6 based on this estimated value.
- the AC motor 7 is driven and controlled.
- the control system in the speed sensorless vector control means 11 is a speed sensorless vector control system that controls the current, voltage, and magnetic flux of the AC motor 7 on the dq axis rotation coordinate system. Since the speed sensorless vector control means 11 is an existing technology, its detailed description is omitted here.
- Fig. 2 shows an example of the configuration of the unauthorized operation detection means 12.
- It is an unauthorized regeneration detection means that detects abnormalities during operation.It uses the overhead wire current detection value Is detected by the overhead wire current detection means 4 and the first current setting value that is set to determine that the regeneration is unauthorized.
- 15 is an unauthorized power line detection means for detecting an abnormality during regenerative operation, and it is determined that the overhead line current detection value Is detected by the overhead line current detection means 4 and the overhead line current detection value Is!
- the comparison means 20 during regeneration for comparing the second current setting value set to the overhead current condition EPDBLVL22 during regeneration, and the detection result of this comparison means 20 for a certain period of time. It is equipped with a means for detecting illegal power lines (regenerative time) 17 to output (with delay).
- a power regeneration detection selection means that selects either the unauthorized regeneration detection means 14 or the unauthorized power detection means 15 depending on whether the operation is in a coasting operation or a regenerative operation based on the power command P *. is there.
- the power command P * can be obtained directly according to the position of the command, which is a transmission on the cab of the electric vehicle.
- the principle of the unauthorized operation detecting means 12 configured as described above is that the overhead wire current Is is in the positive direction (immediately when the speed sensorless vector control means 11 is in the normal caulking operation. That is, plus).
- the speed sensorless vector control means 11 when the speed sensorless vector control means 11 is in a normal regenerative operation, the fact that the overhead wire current Is is in the negative direction (that is, minus) is used.
- the unauthorized operation detection means 12 determines that the speed sensorless vector control means 11 is abnormal when the overhead current Is flows in the negative direction instead of the positive direction when the speed sensorless vector control means 11 is operating in the negative direction, and the WV F inverter 6 Is stopped by the gate stop means 13.
- the unauthorized operation detection means 12 judges that the speed sensorless vector control means 11 is abnormal when the overhead wire current Is flows in the positive direction instead of the negative direction during the regenerative operation, and the WVF inverter 6 is gate-stopped. Stop by means 13.
- the running command P * is input to the illegal operation detecting means 12 and the speed sensorless beta control means 11, so the running regeneration detection selecting means 18 has the A contact and the C contact. Will be connected.
- the overhead line current Is flows in the negative (minus) direction, so the overhead line current condition EPDPLVL21, which is the first current setting value, is compared with the overhead line comparison means 19 To do.
- the overhead line current condition EPDPLVL21 is set to 10A, and the overhead line current Is is -1 OA (the overhead line current condition during
- EPDPLVL21 is detected to be smaller.
- the unauthorized regeneration detection time element means 16 has a detection time element (delay) for a certain period of time in order to prevent false detection due to a transient response, etc., and the time of the time element (delay) If the state where the overhead line current Is is smaller than the overhead line current condition EPDPLVL21 continues even after elapse of time, the unauthorized operation detection means 12 outputs the unauthorized operation detection signal EPD to the goat stop means 13.
- the set time of the element is good if the time above the resonance frequency of the DC filter rear tuttle 3 and DC filter capacitor 5 is set in consideration of the response of the overhead wire current Is.
- each parameter of the unauthorized operation detection means 12 during regeneration is shown in FIG. 5, and the operation will be described below with reference to FIGS.
- the feed command P * is not input, so the feed regeneration detection / selection means 18 has a contact B and a contact C connected.
- the overhead wire current Is flows in the negative (minus) direction.
- the overhead wire current Is flows in the positive (positive) direction. Therefore, the overhead wire current Is and the second current set value, the overhead wire current condition EPDBLVL22 during regeneration, are compared by the comparison means 20 during regeneration. .
- the overhead wire current condition EPDBLVL22 during regeneration is set to + 10A, and the comparison means 20 during regeneration detects that the overhead wire current Is is greater than + 10A (overhead current condition EPDBLVL22 during regeneration).
- the illegal cash detection time element means 17 has a detection time element (delay) for a certain period of time in order to prevent false detection due to a transient response, etc., and the time element (delay) If the state where the overhead wire current Is is larger than the overhead wire current condition EPDBLVL22 during regeneration continues even if time elapses, the unauthorized operation detection means 12 outputs the EPD of the unauthorized operation detection signal to the gate stop means 13.
- the set time of the element is good if the time above the resonance frequency of the DC filter rear tuttle 3 and DC filter capacitor 5 is set in consideration of the response of the overhead wire current Is.
- FIG. 3 shows an example of the configuration of the gate stop means 13.
- the gate stop unit 13 generates a gate signal by the gate signal command generation circuit 26 based on the voltage command calculated by the speed sensorless vector control unit 11.
- the signal EPD becomes 1, and the signal is inverted by an inverting (NOT) circuit 25 to be zero, and this is input to the multiplier 27 to be input to the VWF inverter 6
- the gate signals to all switching elements are turned off (zero).
- the control device for an electric vehicle is capable of executing the line command P *.
- V VVF inverter variable voltage variable frequency inverter
- AC motor 7 connected to the AC side of VWF inverter 6
- WVF Filter capacitor 5 connected in parallel to the DC side of inverter 6
- current detection means 10 for detecting current information on the AC side of WVF inverter 6
- voltage detection means for detecting DC voltage information on filter capacitor 5 24
- a speed sensorless vector control means 11 that estimates the rotational speed of the AC motor 7 from the output voltage command of the V VVF inverter 6 and the output current of the VWF inverter 6 and controls the WVF inverter 6 based on the estimated value.
- a control device for an electric vehicle that has an overhead line current detection means (DC current detection means) 4 that detects the current of the overhead line 1 and a VWF inverter 6 that is operated during operation. Is the brake command B *! Or deviation.
- DC current detection means One command and the overhead wire current detection means (DC current detection means) 4
- the overhead wire current (DC current) detected by 4 and the predetermined current set value are used to sign the overhead wire current.
- Top means 13 are provided.
- the unauthorized operation detection means 12 in the present embodiment illegally regenerates the value of the overhead wire current (DC current) detected by the overhead wire current detection means 4 when the VWF inverter 6 is in the caulking operation.
- the illegal regenerative detection means 14 that compares the first current set value that is set to determine that there is a current, and the overhead wire current (DC current) detected by the overhead wire current detection means 4 when the WVF inverter 6 is in regenerative operation
- the illegal power detection means 15 that compares the current value with the second current setting value that is set to determine that the power is illegally operated and the power command P * (or brake command B *)
- a power regeneration detection selection means 15 selects the unauthorized regeneration detection means 14 during the coasting operation and selects the unauthorized regeneration detection means 15 during the regeneration operation.
- the unauthorized regeneration detection means 14 in the present embodiment takes a certain time from when the current value of the overhead line 1 detected by the overhead line current detection means 4 becomes smaller than the first current set value. It has illegal regeneration detection time element 16 that can be passed, and illegal fraud detection means 15 is configured such that the current value of overhead line 1 detected by overhead line current detection means 4 is the second current set value. There is a fraudulent detection means 17 that can allow a certain period of time to elapse from the time when it becomes larger.
- the VWF inverter is speed sensorless depending on the sign of the overhead wire current detected by the overhead wire current detection means during operation based on the steering command P * or the brake command B *. It is equipped with an abnormal motion detection means that detects that the vector control means is abnormal, and is configured to stop the VWF inverter when the abnormal operation detection means detects an abnormality. Therefore, it is possible to easily detect an abnormality in the speed sensorless vector control means, and it is possible to prevent failure of the inverter device parts due to overcurrent.
- setting constants for abnormality determination can be easily set, and even if the AC motor or variable voltage variable frequency inverter is changed, it is possible to detect an abnormality in the speed estimation value without changing the setting constant. it can.
- the value of the current of the overhead wire detected by the overhead wire current detection means is constant for a certain period of time from when it becomes smaller than the first current set value set for judging that the regeneration is illegal. From the second current set value set to determine that the illegal power is detected and the power value of the overhead line current detected by the overhead line current detection means Since it is equipped with an improper detection means that can allow a certain amount of time to elapse after it becomes large, incorrect detection of improper regeneration detection means and improper fraud detection means due to transient responses, etc. Can be prevented.
- FIG. 6 is a diagram showing a configuration of an electric vehicle control apparatus according to Embodiment 2 of the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted, and only different parts are described here.
- the second embodiment it is also possible to operate with a force brake command B *, which will be described by taking as an example the case of a control device for an electric vehicle that operates in response to the power command P *.
- a force brake command B * which will be described by taking as an example the case of a control device for an electric vehicle that operates in response to the power command P *.
- the overhead wire current estimating means 23 is provided, and its output is provided. Is input to the unauthorized operation detection means 12.
- the overhead wire current estimated value estimated (calculated) by the overhead wire current estimating means 23 is input to the unauthorized operation detecting means 12 instead of the overhead wire current detected value.
- the overhead wire current value Is detected by the overhead wire current detection means 4 is input to the unauthorized operation detection means 12, and the abnormality of the speed sensorless vector control means 11 is determined.
- the first embodiment requires the overhead wire current detection means 4 for detecting the current of the overhead wire 1, and there is a problem that the manufacturing cost of the device increases and the reliability of the device decreases due to an increase in the number of parts. .
- the current value of the overhead wire 1 is estimated by the overhead wire current estimating means 23, thereby eliminating the overhead wire current detecting means 4 used in the first embodiment.
- the speed sensorless vector control means 11 it is possible to determine abnormality of the speed sensorless vector control means 11 without lowering the manufacturing cost and lowering the reliability of the apparatus.
- FIG. 7 shows the configuration of the overhead wire current estimating means 23.
- the overhead wire current estimating means 23 includes a capacitor input current estimating means 28 for estimating the capacitor input current Ic, and an inverter DC input.
- the capacitor input current estimation means 28 for estimating the capacitor input current Ic of the overhead wire current estimation means 23 is a voltage detection that detects the DC voltage information of the filter capacitor 5 connected in parallel to the DC side of the VWF inverter 6. By differentiating the capacitor voltage Vc detected by the means 24 with time and multiplying by the filter capacitor capacity C, the capacitor input estimated current Ic-s is calculated by the following equation (1).
- equation (1) uses differentiation, it can be realized by software such as a microcomputer. Therefore, the following formula (2) may be used practically because the calculation result may be difficult or the calculation result may diverge.
- the time constant T may be set to a value similar to the maximum operating frequency of the WVF inverter 6.
- the time constant T in equation (2) can be calculated by the following equation (3) and should be set to about 80 msec.
- the configuration of the WVF inverter 6 is configured by six switching elements (Su, Sv, Sw, Sx, Sy, Sz) such as an IGBT (insulated gate bipolar transistor) as shown in FIG. 8, for example. Yes.
- the actual WVF inverter 6 has a vertical short-circuit prevention time (or dead time) Td to prevent the two switching elements of each phase from turning on at the same time.
- the inverter DC input current estimation means 29 for estimating the inverter DC input current Idc of the overhead wire current estimation means 23 is the state of the switching elements Su, Sv, Sw, Sx, Sy, Sz of the WVF inverter 6 shown in FIG. And, using the detection value of the current detection means 10 for detecting the current information on the AC side of the WVF inverter 6, the inverter DC input estimated current Idc-s is calculated by the following equation (4).
- Su, Sv, and Sw are functions indicating the state of the switching element, they can be defined as ON (indicated by +1) and OFF (indicated by 0) in the following states.
- Switching elements 311, Sv, Sw are ON, or when Td and motor currents Iu, Iv, Iw are 0.
- the inverter DC input current estimation method using Equation (4) has been described.
- the inverter DC input current estimation method also calculates the inverter power and sets the capacitor voltage. It can also be calculated by dividing by Vc, and the inverter DC input current can also be calculated using other estimation methods other than Equation (4)! /
- the operation and action after the unauthorized operation detecting means 12 which is an operation for detecting an abnormality of the speed sensorless vector control means 11 using the overhead wire current estimated value Is-s calculated by the overhead wire current estimating means 23 is as follows. Since it is the same as that of the first embodiment, the description is omitted.
- the control apparatus for an electric vehicle converts a direct current into an alternating current of an arbitrary frequency based on the power command P * or the brake command B * ( Variable voltage variable frequency inverter) 6, AC motor 7 connected to the AC side of WVF inverter 6, filter capacitor 7 connected in parallel to the DC side of WVF inverter 6, and current on the AC side of WVF inverter 6
- Current detection means 10 for detecting information
- voltage detection means 24 for detecting DC voltage information of the filter capacitor 5
- An electric vehicle control device comprising speed sensorless vector control means 11 for estimating the speed and controlling the VWF inverter 6 based on the estimated value, and the overhead wire current for estimating the current of the overhead wire 1 Estimated Stage (DC current estimation means) 23, and the estimated current of the overhead wire (DC current estimated by the power command P * or brake command B * and the overhead wire current estimation means (DC
- the overhead wire current estimation means 23 in the present embodiment is based on the current information detected by the current detection means 10 and the switching state of the WVF inverter 6, and the inverter DC input input from the overhead line 1 to the WVF inverter.
- Inverter DC input current estimation means 29 for estimating current capacitor input current estimation means 28 for estimating the capacitor input current input from the overhead wire 1 to the filter capacitor 5, inverter DC input current estimation means 29, and capacitor input current
- An adder 30 is provided for adding the estimated current values of the estimating means 28 and inputting them to the illegal operation detecting means 12.
- the unauthorized operation detection means 12 in the present embodiment is configured such that the overhead current estimation value (DC current estimation value) estimated by the overhead wire current estimation means (DC current estimation means) 23 when the VWF inverter 6 is operating in a cauldron. ) And the first current setting value set to determine that the regeneration is illegal, and the WVF inverter 6 is connected to the overhead current estimation means (DC current estimation means) during regenerative operation.
- Unauthorized power line detection means that compares the estimated current value (DC current estimated value) of the overhead line estimated by 23 with the second current setting value set to determine that the power line is illegally operated Based on 15 and the command for braking or braking, select the unauthorized regeneration detection means 14 during the coasting operation and select the unauthorized regeneration detection selection means 18 during the regeneration operation. I have.
- the unauthorized regeneration detection means 14 in the present embodiment has a certain amount of time since the estimated current value of the overhead line 1 estimated by the overhead line current estimation means 23 becomes smaller than the first current set value.
- the unauthorized regeneration detection means 15 has a power line estimated value estimated by the overhead wire current estimation means 23 larger than the second current set value.
- the speed sensorless vector control is detected based on the sign of the estimated current value of the overhead wire, and the WVF inverter is stopped.
- the same effect as in the case of 1 is achieved, and compared with the first embodiment.
- FIG. 9 is a diagram showing a configuration of an electric vehicle control apparatus according to Embodiment 3 of the present invention.
- 1 is an overhead wire
- 2 is a pantograph
- 3 is a DC filter rear tutor
- 4 is an overhead wire current detection means
- 5 is a filter capacitor
- 6 is a WVF inverter
- 7 is an AC motor that is an induction motor.
- Reference numeral 10 denotes AC-side current detection means.
- the current detection means 10 detects phase currents iu, iv, and iw generated in the AC motor (induction conductive motive) 7.
- the AC-side current detection means 10 the current flowing through the connection connecting the VWF inverter 6 and the AC motor 7 that is an induction motor is detected by CT or the like. It is also possible to detect the phase current using the current flowing inside the VWF inverter 6 such as bus current using other known methods.
- the VV VF inverter 6 that converts direct current into alternating current at an arbitrary frequency applies a three-phase voltage to the alternating current motor 7 (induction motor).
- the offset compensation means 44 is a function for compensating for the offset of the overhead wire current Is using the brake command B * as an input.
- the illegal operation detection means 31 provided with the and the gate stop means 32 having the brake command B * as an input are provided!
- the rotational speed estimation abnormality of AC electric motor 7 is detected only during braking.
- this embodiment detects a speed estimation abnormality only during braking is that, in the case of an electric vehicle, an AC motor that is an AC motor in the same direction as the command from the driver's cab during driving. This is because the direction of rotation is determined so that the induction motor rotates. When braking, it is necessary to determine the direction of rotation so that the voltage command output by the WVF inverter 6 matches the direction of rotation of the AC motor 7 in order to perform braking safely and securely. There is.
- FIG. 10 is a diagram showing a configuration of the unauthorized operation detection means 31 in the present embodiment.
- the illegal operation detection means 31 receives the overhead line current detection value Is detected by the overhead line current detection means 4 and the brake command B * as input, and is greater than the comparison means 33 and sets the overhead current condition during regeneration.
- 11 is a diagram showing a configuration of the gate stop means 32 in the present embodiment.
- the overhead current condition setting means 34 at the time of regeneration of the unauthorized operation detection means 31 is composed of a switching means 39, a time element (ONTD) means 40a, and a time element (ONTD) means 40b. .
- the time element (ONTD) means 40a sets a delay time of 400 msec.
- ONTD means ON Time Delay.
- the time element (ONTD) means 40b sets a delay time of 1400 msec.
- the regenerative time element means 35 of the unauthorized operation detection means 31 includes a time element (ONTD) means 41, a switching means 42, and a variable time element (ONTD) means 43.
- ONTD time element
- ONTD variable time element
- the time element (ONTD) means 41 sets a delay time of 400 msec, and the output of the time element (ONTD) means 41 outputs an ON instruction to the switching means 42 400 msec after the brake command B * is turned ON. To do.
- the switching means 42 can switch from 10 ms ec to 100 msec in response to the ON command output from the time element (ONTD) means 41.
- the variable time element (ONTD) means 43 can delay the output of the switching means 42 (that is, the time of 10 msec or 100 msec) until the EPD signal is outputted after the EPDB signal is inputted.
- the offset compensation unit 44 includes an offset amount calculation unit 51 and a subtraction unit 49.
- the offset amount calculation means 51 includes an integration means 45, a time element (ONTD) means 46, a switching means 47, a division means 48, a switching means 50, and a switching means 52, and a subtraction means 49 is inputted.
- the offset amount calculated by the offset amount calculation means 51 is subtracted from the overhead wire current detection value Is.
- the overhead current detection means 4 is affected by an offset of an unnecessary DC component, the force that makes it impossible to accurately determine illegal power line or unauthorized regeneration is detected by the offset compensation means 44.
- the drift of the DC component that is unnecessary for the detected overhead line current can be removed, and it is possible to accurately determine whether or not the illegal operation is performed.
- the offset compensation means 44 in the present embodiment is characterized in that the offset amount is calculated only during a certain time (100 msec) after the brake command B * is input.
- the method of attenuating the DC component of the current detection value with a high-pass filter in the current detection value or the current detection of the AC machine described in Japanese Patent Publication No. 06-68503 In the “method”, a method of calculating a low-frequency attenuation signal of the detected current detection value was taken.
- the conventional methods have a problem in that the calculation of the offset amount is complicated and it takes time to calculate the offset amount.
- the offset compensation unit 44 can calculate the offset amount in a short time by the offset amount calculation unit 51.
- the offset amount calculation means 51 uses the fact that there is a certain time delay (time lag) from when the brake command B * is input to when the WVF inverter is started. The offset amount is detected for a certain period of time (in this embodiment, 100 msec) after * is entered.
- the switching means 50 switches to the overhead wire current detection value Is side.
- the overhead wire current detection value Is is input to the integrating means 45.
- the VWF inverter 6 is not activated, so the wire current detection value Is should be zero.
- the overhead wire current detection means 4 has an offset drift, the overhead wire current detection value Is is not zero even when the WVF inverter 6 is stopped.
- the integration means 45 detects the value that is not zero and accumulates it for 100 msec after the brake command B * is input.
- the switching means 47 After 100 msec from the input of the brake command B *, the switching means 47 is switched to the ON side. At the same time, the switching means 52 is switched to the ON side, and the input of the integrating means 45 is zero. Therefore, the integration means 45 stops at the amount calculated in 100msec from the input of the brake command B *.
- the amount calculated in 100msec from the brake command B * input by the integrating means 45 is input to the dividing means 48 through the switching means 47, and the dividing means 48 divides by a predetermined constant of 0.1 (100m). Do.
- the subtracting means 49 subtracts the average value of the offset amount calculated by the dividing means 48 from the overhead line current detection value Is detected by the overhead line current detecting means 4.
- the offset amount (or drift amount) of the overhead wire current can be subtracted, and the influence of the offset amount can be eliminated. Therefore, the influence of the offset of the overhead wire current detection means 4 can be removed.
- the overhead line current detection value Is detected by the overhead line current detection means 4 is a value Is-of obtained by removing the influence of the offset of the overhead line current detection means 4 by the offset compensation means 44, and is input to the comparison means 33. To do.
- the greater than comparison means 33 compares the value Is—of output from the offset compensation means 44 with the value EPDBLV output from the overhead wire current condition setting means 34 during regeneration.
- Output value EP of the overhead wire current condition setting means 34 during regeneration input to the greater than comparison means 33 DBLV has three fixed constants (ie, 5A, 10A, 50A), as shown in Fig. 12. These three constants change depending on the time after the brake command B * is input. Is done.
- the WVF inverter 6 does not operate, or even if the VWF inverter 6 operates, it is a control mode in which only a minute current flows.
- EPDBLV needs to be set to a small value, and this method is used.
- (d) in FIG. 15 is a time when the torque of the AC motor 7 is raised, and is a period during which the current increases.
- EPDBLV value output from the overhead wire current condition setting means 34 at the time of regeneration
- the torque of the AC motor rises and becomes stable after 1400 msec after the brake command B * is input, so that the current is stable and the speed sensorless vector control means 11 operates stably. Become.
- EPDBLV output from the overhead wire current condition setting means 34 during regeneration by the greater than comparison means 33 and the value Is—of from which the offset effect of the overhead wire current detection means 4 is removed by the offset compensation means 44 are compared, and from EPDBLV If Is—of is large, EPDB is output from greater than comparison means 33 and input to regenerative element means 35.
- the regeneration time element means 35 makes the time of the time element of the variable time element (ONTD) means 43 variable by the brake command B * as shown in Fig. 13. It is.
- the EPD signal is output with the time determined by the variable time element means 43 delayed in order to prevent erroneous detection.
- the time element on the OFF side of the switching means 42 is selected 10 msec before 400 msec after the brake command B * is input.
- This value is the state where the inverter is not operating and the initial speed is estimated as shown in (b) and (c) of Fig. 15 until the brake command B * is input up to 400 msec. Therefore, in order to detect an abnormality of the speed sensorless vector control means 11 at the time of initial speed estimation, the time element of the variable time element means 43 must be a time sufficiently shorter than 300 msec. Select 10msec.
- the EPD signal that is the output of the regeneration time element means 35 is input to the gate stop means 32.
- the gate stop means 32 operates to stop the VWF inverter 6.
- the gate stop means 32 in the present embodiment is different from the above-described gate stop means 13 in the first or second embodiment in that a latch means 38 is provided as shown in FIG. This is a feature of Form 3.
- the gate stop means 32 When an EPD signal (in this case, 1 (ON level signal)) indicating a control operation abnormality of the electric vehicle is input, the gate stop means 32 is inverted to “zero” by the inversion means 37b. Then, the gate signal supplied to the VWF inverter 6 is stopped by inputting the voltage signal to zero through the latch means 38 and multiplying the voltage signal by zero.
- EPD signal in this case, 1 (ON level signal)
- gate stop means 32 is the same as that of the gate stop means 13 of the first or second embodiment.
- the gate stop means 32 in the present embodiment detects an abnormality by the EPD signal once using the latch means 38, the gate stop means 32 outputs the output from the inversion means 37b by the latch means until the brake command B * is turned OFF. Continue to hold zero.
- the inverter stops until the brake command B * is turned off.
- the electric brake can be operated by the mechanical braking system, so there is no problem in the operation of the electric car.
- the method of releasing the holding of the latch means 38 when the brake command B * is turned off is that when the brake command B * is turned off, 'zero' is input and converted to 1 by the reversing means 37a. Turns 38 switches and can quickly remove the latch.
- the control apparatus for an electric vehicle is based on the brake command B *! /, And converts the direct current into alternating current with an arbitrary frequency based on the VWF inverter (variable voltage variable frequency).
- Inverter) 6 AC motor 7 connected to the AC side of WVF inverter 6, filter capacitor 5 connected in parallel to the DC side of WVF inverter 6, and current information on the AC side of WVF inverter 6
- the rotational speed of the AC motor 7 is estimated from the current detection means 10, the voltage detection means 24 for detecting the DC voltage information of the filter capacitor 5, the output voltage command of the VWF inverter 6 and the output current of the VWF inverter 6, and Based on the estimated value!
- the brake command B * When the WVF inverter 6 is running, the brake command B *, the overhead wire current detection means (DC current detection means) 4 and the overhead wire current (DC current) detected by the current setting value , And detecting the malfunction of speed sensorless vector control means 11 based on the sign of the DC current, and stopping WVF inverter 6 when this malfunction detection means 31 detects an abnormality.
- the unauthorized operation detection means 31 determines whether the current of the overhead wire 1 (DC current) detected by the overhead wire current detection means (DC current detection means) 4 during the regenerative operation of the WVF inverter 6 and the brake command B *. Based on the current setting value that is set to determine that the overhead current condition setting means 34 during regeneration is illegally performed, and the current setting that is set to determine that this is illegally performed A greater-than-comparison means 33 is provided for comparing the value and the current in overhead line 1.
- the unauthorized operation detection means 31 in the present embodiment further includes an offset compensation means 44 that compensates for an offset component of the current detected by the overhead wire current detection means (DC current detection means) 4.
- the offset compensation means can remove the drift of the unnecessary DC component of the overhead line current detected by the overhead line current detection means 4, and can accurately determine whether the illegal power line or unauthorized regeneration is detected.
- FIG. 16 is a diagram showing a configuration of an electric vehicle control device according to Embodiment 4 of the present invention.
- An electric vehicle control device according to this embodiment will be described with reference to FIG.
- the present embodiment is based on the configuration of the electric vehicle control device according to the above-described third embodiment, and includes an overhead wire current estimation means 23 and a voltage detection means 24 for estimating the current of the overhead wire 1.
- the overhead wire current estimation means 23 and the voltage detection means 24 are equivalent to those described in the second embodiment, and the configuration and operation of the overhead wire current estimation means 23 have been described in detail in the second embodiment. It is.
- the present embodiment is a combination of the third embodiment and the second embodiment.
- the force for controlling the operation of the electric vehicle based on the power command P * is as shown in FIG. Based on the brake command B * !, the operation of the electric car is controlled.
- the control apparatus for an electric vehicle is a VWF inverter (variable voltage variable variable) that converts direct current to alternating current of any frequency based on the brake command B *! Frequency inverter) 6, AC motor 7 connected to the AC side of WVF inverter 6, filter capacitor 5 connected in parallel to the DC side of WVF inverter 6, and current information on the AC side of WVF inverter 6
- Current detection means 10 to detect, voltage detection means 24 to detect DC voltage information of the filter capacitor 5, and the rotational speed of the AC motor 7 is estimated from the output voltage command of the VWF inverter 6 and the output current of the VWF inverter 6, Based on the estimated value!
- DC current estimation means for estimating the current of the overhead wire 1.
- Stage) 23 and when the WVF inverter 6 is operated, the brake command and the overhead wire current estimation means (DC current estimation means) 23 are estimated by the current estimated value of the overhead wire 1 (DC current estimation value) 23 and the predetermined current setting value.
- Illegal operation detection means that detects the sign of the current estimated value (DC current estimated value) of the current line and detects that the speed sensor-less beta control means 11 is abnormal by the sign of the estimated current value (DC current estimated value) of the overhead wire 1 31 and a gate stop means 32 for stopping the VWF inverter when the unauthorized operation detecting means 31 detects an abnormality.
- the overhead wire current estimation means 23 is connected to the VWF inverter 6 from the overhead wire 1 based on the current information detected by the current detection means 10 and the switching state of the VWF inverter 6.
- Inverter DC input current estimation means 29 for estimating the input inverter DC input current
- capacitor input current estimation means 28 for estimating the capacitor input current input from the overhead wire 1 to the filter capacitor 5, and inverter DC input current
- An adder 30 is provided that adds the current estimates of the estimation means 29 and the capacitor input current estimation means 28 and inputs them to the unauthorized operation detection means 31.
- the speed sensorless vector control means is abnormal due to the sign of the overhead line current estimated by the overhead line current estimation means when the WVF inverter is operated based on the brake command. It is configured to stop the WVF inverter when the abnormal operation detection means detects an abnormality, so it is easy and accurate with an extremely simple and inexpensive configuration. In addition, it is possible to detect abnormalities in the speed sensor-less beta control means.
- FIG. 17 is a diagram showing a configuration of an electric vehicle control device according to Embodiment 5 of the present invention.
- An electric vehicle control device according to this embodiment will be described with reference to FIG.
- the present embodiment is characterized in that, in the configuration of the third embodiment shown in FIG. 9, inverter current detection means 53 is provided instead of the overhead wire current detection means 4.
- the present embodiment is characterized by detecting an inverter current Idc and detecting an abnormality of the speed sensorless vector control means 11.
- the control apparatus for an electric vehicle is a variable voltage variable frequency inverter (VWF) that converts direct current into alternating current at an arbitrary frequency based on a brake command B *.
- VWF variable voltage variable frequency inverter
- Inverter 6 AC motor 7 connected to the AC side of WVF inverter 6, filter capacitor 5 connected in parallel to the DC side of WVF inverter 6, and current information on the AC side of VV VF inverter 6
- An electric vehicle control device provided with a speed sensorless vector control means 11 for controlling the WVF inverter 6 based on the estimated value, wherein the inverter detects the inverter current of the VWF inverter 6 Current detection means (DC current detection means) 53 and the brake command B * and inverter current detection means (DC current detection means) 53 when the VWF inverter 6 is in operation.
- the sign of the inverter current (DC current) is obtained from the output inverter current (DC current) and the predetermined current setting value, and the speed sensorless vector control means 11 is detected to be abnormal by the sign of the inverter current (DC current).
- the illegal stop detecting means 31 and the gate stop means 32 for stopping the VWF inverter 6 when the abnormal action detecting means 31 detects an abnormality.
- the inverter current detection means 53 can be installed in the inverter device in advance, so that the overhead current detection means is attached as in the third embodiment.
- the installation work can be simplified.
- the unauthorized operation detection means for detecting that the speed sensorless vector control means is abnormal based on the sign of the inverter current detected by the inverter current detection means during operation of the WVF inverter. It is configured to stop the inverter when this unauthorized operation detection means detects an abnormality, so it can detect the abnormality of the speed sensorless vector control means easily and accurately with a very simple and inexpensive configuration. Touch with force S.
- FIG. 18 is a diagram showing a configuration of an electric vehicle control device according to Embodiment 6 of the present invention.
- An electric vehicle control device according to this embodiment will be described with reference to FIG.
- the present embodiment includes an inverter current estimating means 54 instead of the overhead wire current estimating means 23.
- Other configurations are the same as those of the fourth embodiment, and are denoted by the same reference numerals.
- the present embodiment is characterized in that the inverter current is estimated and Idc-s (inverter DC input estimated current) is calculated to detect an abnormality in the speed sensorless vector control means 11. It is.
- inverter current estimation direct Idc-s (inverter DC input estimated current) is calculated by equation (4) in the second embodiment.
- the electric vehicle control apparatus is based on the brake command B *! /, And converts a direct current to an alternating current of an arbitrary frequency. 6), AC motor 7 connected to the AC side of WVF inverter 6, filter capacitor 5 connected in parallel to the DC side of WVF inverter 6, and AC side of VV VF inverter 6 Current detection means 10 for detecting current information, voltage detection means 24 for detecting DC voltage information of the filter capacitor 5, rotation of the AC motor 7 from the output voltage command of the WVF inverter 6 and the output current of the WVF inverter 6 An electric vehicle control device including a speed sensorless vector control unit 11 that estimates a speed and controls the WVF inverter 6 based on the estimated value, and an inverter that estimates an inverter current of the VWF inverter 6 Current estimation means (DC current estimation means) 54 and the inverter current estimation value (DC current estimation value) estimated by the brake command B * and DC current estimation means (DC current estimation means) 54 when the VW
- the sign of the inverter current estimated value (DC current estimated value) is obtained from the predetermined current set value and the sign of the inverter current estimated value (DC current estimated value) is detected to detect that the speed sensorless vector control means 11 is abnormal. And the gate stop means 32 for stopping the VWF inverter 6 when the malfunction detection means 31 detects an abnormality.
- the speed sensorless vector control method is the same as in the second and fourth embodiments. It is possible to detect stage 11 anomalies.
- the inverter current Idc is estimated by the inverter current estimating means 54, the above formula (1) or formula (2) is calculated as compared with the case of the second and fourth embodiments. Since there is no need to do this, the load factor and calculation amount of the microcomputer can be reduced.
- the inverter is provided with the unauthorized operation detecting means for detecting that the speed sensorless vector control means is abnormal based on the sign of the inverter current estimated by the inverter current estimating means during operation. Since the inverter is stopped when it is detected, an abnormality of the speed sensorless vector control means can be detected easily and accurately with a very simple and inexpensive configuration.
- the present invention is applied to a control device for an electric vehicle that uses an AC motor as a drive source and controls the AC motor by a VWF inverter using a speed sensorless vector control means.
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Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/446,470 US7982421B2 (en) | 2006-11-02 | 2007-10-10 | Electric vehicle controller |
| ES07829463.4T ES2452926T3 (es) | 2006-11-02 | 2007-10-10 | Aparato de control para vehículo eléctrico |
| EP07829463.4A EP2096751B1 (en) | 2006-11-02 | 2007-10-10 | Electric motor car control apparatus |
| JP2008509258A JP4286904B2 (ja) | 2006-11-02 | 2007-10-10 | 電気車の制御装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPPCT/JP2006/321945 | 2006-11-02 | ||
| PCT/JP2006/321945 WO2008053554A1 (fr) | 2006-11-02 | 2006-11-02 | Appareil de commande de voiture à moteur électrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008053675A1 true WO2008053675A1 (fr) | 2008-05-08 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/321945 Ceased WO2008053554A1 (fr) | 2006-11-02 | 2006-11-02 | Appareil de commande de voiture à moteur électrique |
| PCT/JP2007/069725 Ceased WO2008053675A1 (fr) | 2006-11-02 | 2007-10-10 | Appareil de commande pour véhicule à moteur électrique |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/321945 Ceased WO2008053554A1 (fr) | 2006-11-02 | 2006-11-02 | Appareil de commande de voiture à moteur électrique |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7982421B2 (ja) |
| EP (1) | EP2096751B1 (ja) |
| JP (1) | JP4286904B2 (ja) |
| KR (1) | KR20090057125A (ja) |
| CN (2) | CN101536303A (ja) |
| ES (1) | ES2452926T3 (ja) |
| WO (2) | WO2008053554A1 (ja) |
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| JP2011078161A (ja) * | 2009-09-29 | 2011-04-14 | Hitachi Ltd | インバータ誤動作停止システム |
| WO2011039794A1 (ja) * | 2009-09-29 | 2011-04-07 | 三菱電機株式会社 | 電力変換装置 |
| EP2514626B1 (en) * | 2009-12-18 | 2019-04-24 | Mitsubishi Electric Corporation | Electric vehicle drive control apparatus |
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| DE102014220516A1 (de) | 2014-08-22 | 2016-02-25 | Continental Teves Ag & Co. Ohg | Verfahren und Vorrichtung zum Betreiben einer elektrischen Maschine |
| CN107171297B (zh) * | 2017-05-18 | 2019-02-05 | 许继集团有限公司 | 一种基于fpga的防止继电保护误动作的方法及系统 |
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| CN116325470A (zh) * | 2020-10-26 | 2023-06-23 | 发那科株式会社 | 具有配线状态检测部的转换器以及电动机驱动装置 |
| CN112974789B (zh) * | 2021-02-08 | 2022-05-17 | 广东韶钢松山股份有限公司 | 一种精炼炉钢包车定位方法 |
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- 2007-10-10 CN CNA200780041095XA patent/CN101536303A/zh active Pending
- 2007-10-10 JP JP2008509258A patent/JP4286904B2/ja not_active Expired - Fee Related
- 2007-10-10 US US12/446,470 patent/US7982421B2/en not_active Expired - Fee Related
- 2007-10-10 CN CN2011102224535A patent/CN102259598B/zh not_active Expired - Fee Related
- 2007-10-10 WO PCT/JP2007/069725 patent/WO2008053675A1/ja not_active Ceased
- 2007-10-10 ES ES07829463.4T patent/ES2452926T3/es active Active
- 2007-10-10 KR KR1020097007832A patent/KR20090057125A/ko not_active Ceased
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| JP2003018898A (ja) * | 2001-06-27 | 2003-01-17 | Mitsubishi Electric Corp | ベクトル制御による電気車制御装置 |
| JP3732784B2 (ja) | 2002-01-22 | 2006-01-11 | 財団法人鉄道総合技術研究所 | 電気車の駆動制御方法および制御装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US7982421B2 (en) | 2011-07-19 |
| EP2096751B1 (en) | 2014-03-12 |
| EP2096751A1 (en) | 2009-09-02 |
| JP4286904B2 (ja) | 2009-07-01 |
| CN101536303A (zh) | 2009-09-16 |
| US20100194322A1 (en) | 2010-08-05 |
| KR20090057125A (ko) | 2009-06-03 |
| CN102259598A (zh) | 2011-11-30 |
| EP2096751A4 (en) | 2012-06-20 |
| ES2452926T3 (es) | 2014-04-03 |
| WO2008053554A1 (fr) | 2008-05-08 |
| CN102259598B (zh) | 2013-07-17 |
| JPWO2008053675A1 (ja) | 2010-02-25 |
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