WO2022142745A1 - 电压变换器的控制方法、装置以及电压控制系统 - Google Patents

电压变换器的控制方法、装置以及电压控制系统 Download PDF

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Publication number
WO2022142745A1
WO2022142745A1 PCT/CN2021/129511 CN2021129511W WO2022142745A1 WO 2022142745 A1 WO2022142745 A1 WO 2022142745A1 CN 2021129511 W CN2021129511 W CN 2021129511W WO 2022142745 A1 WO2022142745 A1 WO 2022142745A1
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Prior art keywords
current
voltage converter
control
output current
voltage
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Ceased
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PCT/CN2021/129511
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English (en)
French (fr)
Inventor
何炜琛
高锦凤
但志敏
侯贻真
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Jiangsu Contemporary Amperex Technology Ltd
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Jiangsu Contemporary Amperex Technology Ltd
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Priority to KR1020227019648A priority Critical patent/KR102720946B1/ko
Priority to JP2022534389A priority patent/JP7316458B2/ja
Priority to EP21913488.9A priority patent/EP4075650B1/en
Publication of WO2022142745A1 publication Critical patent/WO2022142745A1/zh
Priority to US17/821,811 priority patent/US11962231B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical 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
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • 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
    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/538—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration
    • H02M7/53803—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration with automatic control of output voltage or current
    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration

Definitions

  • the present application belongs to the field of electric power, and particularly relates to a control method, device and voltage control system of a voltage converter.
  • the voltage can be converted using a voltage converter.
  • conversion can be performed between AC voltage-AC voltage, AC voltage-DC voltage, or DC voltage-DC voltage.
  • the output voltage and output current of the voltage converter can be used as feedback signals, and the feedback signals can be returned to the input end of the control in a certain way, and exert control effects on the input end.
  • the entire regulation process has a long time delay, and the output current of the voltage converter cannot be adjusted in time.
  • the control method, device, and voltage control system for a voltage converter provided by the embodiments of the present application can adjust the output current of the voltage converter in time when it is overcurrent.
  • an embodiment of the present application provides a control device for a voltage converter, including:
  • a first control module configured to obtain a current reference value according to the output voltage of the voltage converter and a given voltage value
  • a current modulation module configured to reduce the current reference value when the absolute value of the output current of the voltage converter is greater than the absolute value of the first current threshold
  • the second control module is used for controlling the output current of the voltage converter according to the reduced current reference value and the output current.
  • an embodiment of the present application provides a control method for a voltage converter, including:
  • the output current of the voltage converter is controlled according to the reduced current reference value and the output current.
  • an embodiment of the present application provides a voltage control system, including:
  • a control device as provided in the first aspect or any optional embodiment of the first aspect.
  • the voltage converter control method, device and voltage control system can reduce the output current when the output current of the voltage converter is overcurrent, that is, when the output current collected from the output terminal of the voltage converter is greater than the first current threshold. current reference value, and use the reduced current reference value and the output current to control the output current of the voltage converter. Compared with the existing control scheme of the voltage converter, due to the current reference value that can be reduced in time when the output current of the voltage converter is over-current, it is realized that when the output current of the voltage converter is over-current, the Timely adjustment of the converter.
  • FIG. 1 is a system architecture diagram of a voltage control system provided by an embodiment of the present application.
  • FIG. 2 is a system architecture diagram of another voltage control system provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a control device for a first voltage converter provided by an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a control device for a second voltage converter provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a control device for a third voltage converter provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a control device for a fourth voltage converter provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the control logic of an exemplary control device for a voltage converter provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a control device for a fifth voltage converter provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a control device for a sixth voltage converter provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the control logic of another exemplary control device for a voltage converter provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a control method for a voltage converter provided by an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of another control method for a voltage converter provided by an embodiment of the present application.
  • FIG. 13 shows a schematic diagram of a hardware structure of a control device for a voltage converter provided by an embodiment of the present application.
  • a voltage converter can be used to realize voltage conversion.
  • a closed-loop mechanism can be used to modulate the output voltage and output current.
  • a double closed-loop strategy of an outer voltage loop and an inner current loop can be used, that is, a control relationship in which the output voltage and output current are used as feedback signals to return to the input end, thereby exerting control effects on the input end.
  • V2X vehicle-to-everything
  • the voltage converter may include a DC-DC (Direct Current-Direct Current, DCDC) conversion module for converting between DC voltages.
  • a DC-DC (Direct Current-Direct Current, DCDC) conversion module for converting between DC voltages.
  • an Alternating Current-Alternating Current (ACAC) conversion module for converting between alternating voltages may be included.
  • an AC-DC (Direct Current-Alternating Current, DCAC) conversion module for converting between alternating voltages.
  • the voltage converter may select a DCAC bidirectional conversion module.
  • the batteries in the embodiments of the present application may be lithium-ion batteries, lithium metal batteries, lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, lithium-sulfur batteries, lithium-air batteries, or sodium-ion batteries, etc., which are not limited herein.
  • the battery pack to be tested can also be a single cell, a battery module or a battery pack, which is not limited here.
  • batteries can be used in power devices such as cars and ships. For example, it can be used in an electric vehicle to supply power to the motor of the electric vehicle as a power source for the electric vehicle. The battery can also supply power to other electrical devices in electric vehicles, such as in-car air conditioners, car players, etc.
  • V2X scenarios can include grid-to-vehicle energy transmission (Grid to Vehicle, G2V) scenarios, vehicle-to-grid energy transmission (Vehicle to Grid, V2G) scenarios, vehicle-to-load energy transfer (Vehicle to Load, V2L) scenarios, etc.
  • G2V Grid-to-vehicle energy transmission
  • V2G Vehicle-to-grid energy transmission
  • V2L vehicle-to-load energy transfer
  • the grid in G2V mode, can be called the input terminal, and the battery can be called the output terminal.
  • the battery in G2V mode, can be charged with electricity from the grid.
  • the battery can be called the input terminal, and the power grid can be called the output terminal.
  • the electric vehicle can discharge backwards towards the grid through the voltage converter. For example, when an electric vehicle is not running, it can be connected to the grid through a voltage converter to sell the battery's idle power to the grid.
  • V2L mode the battery is called the input, and the load on the AC side can be called the output.
  • V2L mode the battery power can be used to supply power to the AC side power load.
  • the embodiments of the present application provide a control method, a device and a voltage control system for a voltage converter.
  • FIG. 1 is a system architecture diagram of a voltage control system provided by an embodiment of the present application. As shown in FIG. 1 , the voltage control system may include a voltage converter control device 10 and a voltage converter 20 .
  • the voltage converter 20 can be used for voltage conversion.
  • the control device 10 of the voltage converter is used for reducing the current reference value when the absolute value of the output current of the voltage converter is greater than the absolute value of the first current threshold during the voltage conversion process of the voltage converter 20, and according to The adjusted current reference value controls the output current of the voltage converter 20 .
  • the current reference value can be reduced , and control the output current of the voltage converter with the reduced current reference value and the output current.
  • the current reference value that can be reduced in time when the output current of the voltage converter is over-current, it is realized that when the output current of the voltage converter is over-current, the Timely adjustment of the converter.
  • the voltage control system provided by the embodiments of the present application may be used in an electric vehicle scenario.
  • FIG. 2 is a system architecture diagram of another voltage control system provided by an embodiment of the present application.
  • one end of the voltage converter 20 is connected to the battery 30
  • the other end of the voltage converter 20 is connected to the grid 41 or the AC load 42 .
  • the optional connection relationship is shown with dotted lines in FIG. 2 .
  • the voltage control system may further include a voltage acquisition module for acquiring output voltage, and a current acquisition module for acquiring output current.
  • control device of the voltage converter provided by the embodiments of the present application will be introduced below.
  • FIG. 3 is a schematic structural diagram of a control device for a first voltage converter provided by an embodiment of the present application.
  • the control device 10 of the voltage converter includes a first control module 11 , a current modulation module 12 and a second control module 13 .
  • the first control module 11 is configured to obtain a current reference value according to the output voltage of the voltage converter 20 and a given voltage value.
  • the given voltage value can be set according to specific scenarios and actual needs.
  • the given voltage value in the V2G mode or the V2L mode, the given voltage value may be the minimum discharge voltage of the battery 30 .
  • the given voltage value in the G2V mode, may be the nominal charging voltage of the battery 30 .
  • the difference between the output voltage of the voltage converter and a given voltage value can be calculated by a subtractor first, and then a current reference value can be obtained through a proportional integral controller (Proportional Integral, PI).
  • PI Proportional Integral
  • the current modulation module 12 is configured to reduce the current reference value when the absolute value of the output current of the voltage converter 20 is greater than the absolute value of the first current threshold value.
  • the first current threshold may be determined according to the normal output current, for example, may be a preset multiple of the normal output current. Wherein, the preset multiple is greater than 1.
  • the first current threshold may represent a threshold between overcurrent and non-overcurrent. That is, if the output current exceeds the first current threshold, it means that the output current is overcurrent.
  • a comparator may be used to determine whether the absolute value of the output current of the voltage converter 20 is greater than the absolute value of the first current threshold.
  • the current reference value may be reduced by a subtractor.
  • the second control module 13 is configured to control the output current of the voltage converter according to the reduced current reference value and the output current.
  • the control device of the voltage converter of the embodiment of the present application when the output current of the voltage converter is overcurrent, that is, when the absolute value of the output current collected from the output end of the voltage converter is greater than the absolute value of the first current threshold current reference value, and use the reduced current reference value and the output current to control the output current of the voltage converter.
  • the current reference value that can be reduced in time when the output current of the voltage converter is over-current, it is realized that when the output current of the voltage converter is over-current, the Timely adjustment of the converter.
  • FIG. 4 is a schematic structural diagram of a control device for a second voltage converter provided by an embodiment of the present application.
  • the current modulation module 12 includes a first comparison unit 121 and a current modulation unit 122 .
  • the first comparison unit 121 is configured to acquire the output current and the first current threshold, and output a first signal when the absolute value of the output current is greater than the absolute value of the first current threshold.
  • the first comparison unit 121 when the first comparison unit 121 outputs the first signal, it means that the output current of the voltage converter is over-current.
  • the first signal may be a low level signal . That is, when the output current is greater than the first current threshold, the first comparison unit 121 outputs a low-level signal.
  • the first current threshold may be provided by a relevant register, and a user may adjust the first current threshold in the relevant register through software.
  • the first current threshold may be set by a DA converter (DA) converter that converts a digital quantity into an analog quantity.
  • DA DA converter
  • the first comparison unit includes a first comparison subsystem (Comparator Subsystem, CMPSS).
  • CMPSS Compparator Subsystem
  • the overcurrent protection function needs to be realized through the following process: first, it is necessary to collect a plurality of current data of the circuit to be protected within a preset time period (used to characterize the circuit to be protected). The actual component parameters of the protection circuit), and secondly, it is necessary to perform effective current screening on multiple current data; according to the results of the screening process, determine the target overcurrent protection value corresponding to the circuit to be protected. It can be seen that, to realize overcurrent protection through software, sampling and filtering are required, and the current response time delay is relatively long. Due to the short current response delay required by the hardware characteristics of the switches of the voltage converter, such as the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), the pure software implementation is risky.
  • MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
  • implementing the overcurrent limiting protection function through a pure hardware solution requires at least the following device units: a sampling unit, a filtering unit, an arithmetic processing unit, a comparison action unit, and the cost is high.
  • CMPSS is a component of a digital signal processing (Digital Signal Processing, DSP) chip
  • DSP Digital Signal Processing
  • the CMPSS has a high-side comparison unit (COMPH)
  • the positive current can be compared with the positive value of the first current threshold
  • the CMPSS also has a low-side comparison unit (COMPL), which can compare the negative current with the first current threshold. Negative values are compared. Therefore, in the usage scenarios of electric vehicles, such as in V2G and G2V modes, even if the current flows in opposite directions, the output current can be compared with the first current threshold by using CMPSS.
  • the first current threshold may be a positive value, such as 55 amperes (A)
  • the first current threshold may be a negative value, such as -55A.
  • the positive value of the first current threshold and the negative value of the first current threshold can be obtained through the DA converter.
  • the current modulation unit 122 is configured to reduce the current reference value in response to the first signal.
  • the current signal when the current overshoots, can be fed back through the first comparison unit 121 in time to adjust the current reference value of the current inner loop without modifying the control parameters of the PI loop.
  • the overshoot of the PI loop is avoided as much as possible.
  • FIG. 5 is a schematic structural diagram of a control device for a third voltage converter provided by an embodiment of the present application.
  • the current modulation unit 122 includes a processing subunit 1221 and a current modulation subunit 1222 .
  • the processing sub-unit 1221 is used for determining a small amount of current adjustment in response to the first signal.
  • the amount of current throttling may be a constant value. Exemplarily, as long as the low-level signal sent by the first comparison unit 121 is received, a small amount of current adjustment is generated.
  • the current modulation subunit 1222 is configured to reduce the current reference value by a small amount to obtain a reduced current reference value.
  • the reduced current reference value may be equal to the difference between the current reference value before the reduction and the current reduction value.
  • the current modulation subunit 1222 may be embodied as a subtractor. Specifically, after the current reference value and the current adjustment amount are input to the subtractor, the reduced current reference value can be output.
  • FIG. 6 is a schematic structural diagram of a control device for a fourth voltage converter provided by an embodiment of the present application.
  • the second control module 13 includes a control unit 131 and a first signal generation unit 132 .
  • the control unit 131 is configured to generate an adjustment amount of the output current according to the reduced current reference value and the output current.
  • control unit 131 may be embodied as a subtractor and a PI controller. Specifically, after the current reference value and the output current are input into the PI controller, the difference between the two can be obtained, and then the adjustment amount of the output current can be obtained through the PI controller.
  • the first signal generating unit 132 is configured to generate a control signal of the voltage converter according to the adjustment amount of the output current.
  • the first signal generating unit 132 includes: a first Enhanced Pulse Width Modulator (ePWM) unit. Specifically, the period and duty cycle of the control signal can be generated by ePWM.
  • ePWM Enhanced Pulse Width Modulator
  • the ePWM unit and the CMPSS are components of the same DSP chip, and through reasonable configuration, one DSP chip can be used to control the voltage converter, thereby reducing the cost of hardware circuits.
  • the model of the DSP chip may be DSP28337D.
  • control unit 131 includes: a difference determination subunit and an adjustment amount determination subunit.
  • the difference determination subunit is used for determining the difference between the reduced current reference value and the output current.
  • the difference determination subunit may be embodied as a subtractor.
  • the adjustment amount determination subunit is used for determining the adjustment amount according to the difference.
  • the adjustment amount determination subunit may be embodied as a PI controller.
  • control unit 131 for the difference determination subunit and the adjustment amount determination subunit, reference may be made to the relevant description of the control unit 131, which will not be repeated here.
  • FIG. 7 is a schematic diagram of the control logic of an exemplary control device for a voltage converter provided by an embodiment of the present application.
  • the voltage difference is obtained.
  • the current reference value is obtained.
  • the first CMPSS acquires the output current Iout, and outputs a first signal when the absolute value of the output current Iout is greater than the absolute value of the first current threshold.
  • the PI operation may be implemented by a proportional-integral-resonant (PI-RES) controller.
  • the adjustment amount of the output current is input to the first ePWM unit to obtain the control signal of the voltage converter 20 .
  • FIG. 8 is a schematic structural diagram of a control device for a fifth voltage converter provided in an embodiment of the present application.
  • the difference between FIG. 8 and FIG. 3 is that the control device 10 of the voltage converter further includes a third control module 14 .
  • the third control module 14 is configured to control the voltage converter to stop outputting current when the absolute value of the output current is greater than the absolute value of the second current threshold.
  • the absolute value of the second current threshold is greater than the absolute value of the first current threshold.
  • the second current threshold may be 60A.
  • the first current threshold and the second current threshold may be set according to actual scenarios and specific requirements.
  • the second current threshold may be set to a preset multiple of the first current threshold, and the preset multiple is greater than 1.
  • the second current threshold may be set according to the maximum withstand current of the voltage converter.
  • FIG. 9 is a schematic structural diagram of a control device for a sixth voltage converter provided by an embodiment of the present application.
  • the third control module 14 includes a second comparing unit 141 and a second signal generating unit 142 .
  • the second comparison unit 141 is configured to acquire the output current and the second current threshold, and output a control instruction when the absolute value of the output current is greater than the absolute value of the second current threshold.
  • the control command is used to control the voltage converter to stop outputting current.
  • the output current can be stopped by controlling all the switching units of the voltage converter 20 to be turned off.
  • the second comparison unit 141 includes a second CMPSS. It should be noted that the second CMPSS and the first CMPSS may be two different CMPSSs.
  • the second current threshold in the COMPH cell of the second CMPSS, may be a positive value, such as 60A, and in the COMPL cell of the second CMPSS, the second current threshold may be a negative value, such as -60A.
  • the second signal generating unit 142 is further configured to generate a control signal of the voltage converter 20 in response to the control command.
  • the control signal is used to control the converter to stop working.
  • the second signal generating unit 142 includes: an event triggering subunit, configured to modulate the control signal into a low-level signal in response to the control instruction.
  • an event triggering subunit configured to modulate the control signal into a low-level signal in response to the control instruction.
  • the forced event is triggered by the event triggering subunit, and at this time, the control signal of the voltage converter 20 is forcibly modulated into a low-level signal.
  • the second signal generating unit includes: a second ePWM unit.
  • the event triggering subunit may be a triggering (Trip) submodule in the second ePWM unit, and the Trip submodule may trigger a forced event of the second ePWM unit.
  • FIG. 10 is a schematic diagram of the control logic of another exemplary control device for a voltage converter provided by an embodiment of the present application.
  • the second CMPSS obtains the output current Iout, if it is determined that the absolute value of the output current Iout is greater than the absolute value of the second current threshold, it will output a control command to the second ePWM unit, and the second ePWM unit responds to this
  • the control command triggers a forced event, and modulates the control signal into a low-level signal forcibly, and controls the output current Iout to be equal to zero.
  • the embodiments of the present application not only provide a control device for a voltage converter, but also provide a corresponding control method for the voltage converter.
  • FIG. 11 is a schematic flowchart of a control method for a voltage converter provided by an embodiment of the present application. As shown in FIG. 11 , the control method of the voltage converter includes S1110 to S1130.
  • S1130 Control the output current of the voltage converter according to the reduced current reference value and the output current.
  • the control method of the voltage converter when the output current of the voltage converter is overcurrent, that is, when the absolute value of the output current collected from the output end of the voltage converter is greater than the absolute value of the first current threshold, it can reduce the current reference value, and use the reduced current reference value and the output current to control the output current of the voltage converter.
  • the current reference value that can be reduced in time when the output current of the voltage converter is over-current, it is realized that when the output current of the voltage converter is over-current, the Timely adjustment of the converter.
  • S1120 specifically includes:
  • the current reference value is decreased.
  • S1130 specifically includes:
  • the adjustment amount of the output current is generated
  • generating a control signal of the voltage converter according to the adjustment amount in S1130 specifically includes:
  • a difference determination subunit used for determining the difference between the reduced current reference value and the output current
  • the adjustment amount determination subunit is used for determining the adjustment amount according to the difference.
  • reducing the current reference value in response to the first signal in S1120 specifically includes:
  • FIG. 12 is a schematic flowchart of another method for controlling a voltage converter provided by an embodiment of the present application.
  • the difference between FIG. 12 and FIG. 11 is that after S1130, the control method of the voltage converter further includes S1140.
  • the absolute value of the second current threshold is greater than the absolute value of the first current threshold.
  • S1140 specifically includes:
  • a control signal for the voltage converter is generated.
  • control signal of the voltage converter is generated in response to the control command in S1140, which specifically includes:
  • control signal In response to the control command, the control signal is modulated into a low-level signal.
  • control method of the voltage converter according to the embodiment of the present application are similar to the control device of the voltage converter described above in conjunction with the examples shown in FIGS. 3 to 10 , and can achieve its corresponding technical effects. For the sake of brevity, It is not repeated here.
  • FIG. 13 shows a schematic diagram of a hardware structure of a control device for a voltage converter provided by an embodiment of the present application.
  • the control device for the voltage converter may include a processor 1301 and a memory 1302 storing computer program instructions.
  • the above-mentioned processor 1301 may include a central processing unit (Central Processing Unit, CPU), or a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application .
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • Memory 1302 may include mass storage for data or instructions.
  • memory 1302 may include a Hard Disk Drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a Universal Serial Bus (USB) drive or two or more A combination of more than one of the above.
  • HDD Hard Disk Drive
  • floppy disk drive a flash memory
  • optical disk a magneto-optical disk
  • magnetic tape magnetic tape
  • USB Universal Serial Bus
  • USB Universal Serial Bus
  • memory 1302 may include removable or non-removable (or fixed) media, or memory 1302 is non-volatile solid-state memory.
  • the memory 1302 may be internal or external to the control device of the voltage converter.
  • memory 1302 may be a read only memory (ROM).
  • the ROM may be a mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or both A combination of one or more of the above.
  • Memory 1302 may include read only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical or other physical/tangible memory storage devices.
  • ROM read only memory
  • RAM random access memory
  • magnetic disk storage media devices typically, magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical or other physical/tangible memory storage devices.
  • a memory typically, includes one or more tangible (non-transitory) computer-readable storage media (eg, memory devices) encoded with software including computer-executable instructions, and when the software is executed (eg, by a or multiple processors), it is operable to perform the operations described with reference to a method according to an aspect of the present disclosure.
  • the processor 1301 reads and executes the computer program instructions stored in the memory 1302 to implement the methods in the embodiments shown in FIG. 11 and FIG. 12 , and achieve the corresponding technical effects achieved by the implementation of the methods in the examples shown in FIGS. 11 and 12 . , which is not repeated here for brevity.
  • control device for the voltage converter may also include a communication interface 1303 and a bus 1310 .
  • the processor 1301 , the memory 1302 , and the communication interface 1303 are connected through the bus 1310 and complete the mutual communication.
  • the communication interface 1303 is mainly used to implement communication between modules, apparatuses, units and/or devices in the embodiments of the present application.
  • the bus 1310 includes hardware, software, or both, coupling the components of the online data flow metering device to each other.
  • the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Super Transport (Hyper Transport, HT) interconnect, Industry Standard Architecture (ISA) bus, Infinite Bandwidth interconnect, Low Pin Count (LPC) bus, Memory bus, Micro Channel Architecture (MCA) bus, Peripheral Component Interconnect Connectivity (PCI) bus, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or two or more of these combination.
  • Bus 1310 may include one or more buses, where appropriate. Although embodiments of this application describe and illustrate a particular bus, this application contemplates any suitable bus or interconnect.
  • the control device of the voltage converter can execute the control method of the voltage converter in the embodiments of the present application, so as to realize the control method and device of the voltage converter described in conjunction with FIG. 3 to FIG. 12 .
  • the embodiment of the present application may provide a computer storage medium for implementation.
  • Computer program instructions are stored on the computer storage medium; when the computer program instructions are executed by the processor, any one of the control methods for the voltage converter in the above-mentioned embodiments is implemented.
  • the functional blocks shown in the above structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof.
  • hardware When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), suitable firmware, a plug-in, a function card, and the like.
  • ASIC application specific integrated circuit
  • elements of the present application are programs or code segments used to perform the required tasks.
  • the program or code segments may be stored in a machine-readable medium or transmitted over a transmission medium or communication link by a data signal carried in a carrier wave.
  • a "machine-readable medium” may include any medium that can store or transmit information.
  • machine-readable media examples include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, etc. Wait.
  • the code segments may be downloaded via a computer network such as the Internet, an intranet, or the like.
  • processors may be, but are not limited to, general purpose processors, special purpose processors, application specific processors, or field programmable logic circuits. It will also be understood that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can also be implemented by special purpose hardware for performing the specified functions or actions, or by special purpose hardware and/or A combination of computer instructions is implemented.

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Abstract

本申请公开了电压变换器的控制方法、装置以及电压控制系统。该控制装置包括：第一控制模块，用于根据电压变换器的输出电压和给定电压值得到电流参考值；电流调制模块，用于在电压变换器的输出电流大于第一电流阈值的情况下，减小电流参考值；第二控制模块，用于根据减小后的电流参考值和输出电流，控制电压变换器的输出电流。

Description

电压变换器的控制方法、装置以及电压控制系统
相关申请的交叉引用
本申请要求享有于2020年12月31日提交的名称为“电压变换器的控制方法、装置以及电压控制系统”的中国专利申请202011620158.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请属于电力领域，尤其涉及电压变换器的控制方法、装置以及电压控制系统。
背景技术
随着电力技术的发展，可以利用电压变换器对电压进行转换。例如，可以在交流电压-交流电压之间、交流电压-直流电压之间或者直流电压-直流电压之间进行转换。
为了实现对电压转换的精准控制，可以将电压变换器的输出电压和输出电流作为反馈信号，并将反馈信号以一定方式返回到控制的输入端，并对输入端施加控制影响。
然后，现有的控制方案，整个调控过程时延较长，无法对电压变换器的输出电流进行及时调整。
发明内容
本申请实施例提供的电压变换器的控制方法、装置以及电压控制系统，能够在电压变换器的输出电流过流时，对其进行及时调整。
第一方面，本申请实施例提供一种电压变换器的控制装置，包括：
第一控制模块，用于根据电压变换器的输出电压和给定电压值得到电流参考值；
电流调制模块，用于在电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值；
第二控制模块，用于根据减小后的电流参考值和输出电流，控制电压变换 器的输出电流。
第二方面，本申请实施例提供了一种电压变换器的控制方法，包括：
根据电压变换器的输出电压和给定电压值得到电流参考值；
在电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值；
根据减小后的电流参考值和输出电流，控制电压变换器的输出电流。
第三方面，本申请实施例提供了一种电压控制系统，包括：
如第一方面或第一方面的任一可选的实施方式提供的控制装置；以及
电压变换器。
本申请实施例的电压变换器的控制方法、装置以及电压控制系统，当电压变换器的输出电流过流时，即从电压变换器输出端采集的输出电流大于第一电流阈值时，能够减小电流参考值，并利用减小后的电流参考值和输出电流控制电压变换器的输出电流。相较于现有的电压变换器的控制方案，由于在电压变换器的输出电流过流时，可及时减小的电流参考值，从而实现了在电压变换器的输出电流过流时，对电压变换器的及时调整。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单的介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种电压控制系统的系统架构图；
图2是本申请实施例提供的另一种电压控制系统的系统架构图；
图3是本申请实施例提供的第一种电压变换器的控制装置的结构示意图；
图4是本申请实施例提供的第二种电压变换器的控制装置的结构示意图；
图5是本申请实施例提供的第三种电压变换器的控制装置的结构示意图；
图6是本申请实施例提供的第四种电压变换器的控制装置的结构示意图；
图7是本申请实施例提供的一种示例性的电压变换器的控制装置的控制逻辑的示意图；
图8是本申请实施例提供的第五种电压变换器的控制装置的结构示意图；
图9是本申请实施例提供的第六种电压变换器的控制装置的结构示意图；
图10是本申请实施例提供的另一种示例性的电压变换器的控制装置的控制逻辑的示意图；
图11是本申请实施例提供的一种电压变换器的控制方法的流程示意图；
图12是本申请实施例提供的另一种电压变换器的控制方法的流程示意图；
图13示出了本申请实施例提供的电压变换器的控制设备的硬件结构示意图。
具体实施方式
下面将详细描述本申请的各个方面的特征和示例性实施例，为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施例，对本申请进行进一步详细描述。应理解，此处所描述的具体实施例仅意在解释本申请，而不是限定本申请。对于本领域技术人员来说，本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本申请的示例来提供对本申请更好的理解。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括……”限定的要素，并不排除在包括要素的过程、方法、物品或者设备中还存在另外的相同要素。
现阶段，在需要电压转换时，可以利用电压变换器来实现电压转换。为了提高输出电压和输出电流的准确性，可以采用闭环机制对输出电压和输出电流进行调制。比如，可以采用电压外环、电流内环的双闭环策略，即，将输出电压和输出电流作为反馈信号，返回到输入端，从而对输入端施加控制影响的一种控制关系。
然而，在现有的双闭环控制策略中，当外环的输出电压发生突变时，内环电流的快速响应就会造成一个很大的超调量，此时产生的瞬态电流就会导致输出电流过流。
比如，以电池领域为例，在车对外界的能量传输(Vehicle to Everything，V2X)场景下，如果输出电流产生超调，将严重影响电压变换器的输出端所连接的器件的使用性能。
为了更好的理解本申请，本申请实施例依次对电压变换器、电池、V2X场景等概念作具体解释说明。
(1)电压变换器。
在本申请实施例中，电压变换器可以包括用于进行直流电压之间转换的直流-直流(Direct Current-Direct Current，DCDC)转换模块。又或者，可以包括用于进行交流电压之间转换的(Alternating Current-Alternating Current，ACAC)转换模块。又或者，交流-直流(Direct Current-Alternating Current，DCAC)转换模块。
在本申请实施例中，若在V2X模式下，则电压变换器可以选用DCAC双向转换模块。
(2)电池。
本申请实施例中的电池可以为锂离子电池、锂金属电池、铅酸电池、镍镉电池、镍氢电池、锂硫电池、锂空气电池或者钠离子电池等，在此不做限定。从规模而言，待测电池组也可以为电芯单体，也可以是电池模组或电池包，在此不做限定。从应用场景而言，电池可应用于汽车、轮船等动力装置内。比如，可以应用于电动汽车内，为电动汽车的电机供电，作为电动汽车的动力源。电池还可为电动汽车中的其他用电器件供电，比如为车内空调、车载播放器等供电。
(3)V2X场景。
安装在电动汽车内的电池的使用场景可以称之为V2X场景，具体地，V2X场景可以包括电网到车辆的能量传输(Grid to Vehicle，G2V)场景、车辆到电网的能量传输(Vehicle to Grid，V2G)场景、车辆到负载的能量传输(Vehicle to Load，V2L)场景等。
其中，在G2V模式下，电网可以称为输入端，电池可以称为输出端。在G2V模式下，可以利用电网的电能为电池充电。
在V2G场景下，电池可以称为输入端，电网可以称为输出端。在V2G模式下，电动汽车可以通过电压变换器反向朝电网放电。例如，电动汽车在不运行时，可以通过电压变换器与电网相连，将电池的闲置电能出售至电网。
在V2L模式下，电池称为输入端，交流侧负载可以称为输出端。在V2L模式下，可以利用电池电能为交流侧用电负载供电。
在介绍完上述概念之后，为了解决相关技术问题，本申请实施例提供了电压变换器的控制方法、装置以及电压控制系统。
为了便于理解，本申请实施例的下述部分将结合附图先对本申请实施例的电压控制系统展开具体说明。
图1是本申请实施例提供的一种电压控制系统的系统架构图。如图1所示，电压控制系统可以包括电压变换器的控制装置10和电压变换器20。
电压变换器20，可以用于进行电压转换。
电压变换器的控制装置10，在电压变换器20进行电压转换的过程中，当电压变换器的输出电流的绝对值大于第一电流阈值的绝对值时，用于调小电流参考值，并根据调小后的电流参考值，控制电压变换器20的输出电流。
本申请实施例的电压控制系统，当电压变换器的输出电流过流时，即从电压变换器输出端采集的输出电流的绝对值大于第一电流阈值的绝对值时，能够减小电流参考值，并利用减小后的电流参考值和输出电流控制电压变换器的输出电流。相较于现有的电压变换器的控制方案，由于在电压变换器的输出电流过流时，可及时减小的电流参考值，从而实现了在电压变换器的输出电流过流时，对电压变换器的及时调整。
在一些实施例中，本申请实施例提供的电压控制系统可以用于电动汽车场景下。
相应地，图2是本申请实施例提供的另一种电压控制系统的系统架构图。如图2所示，电压变换器20的一端与电池30连接，电压变换器20的另一端与电网41或者交流负载42连接。其中，为了便于直观区分，图2中将可选的连接关系用虚线进行示出。
在一些实施例中，电压控制系统还可以包括用于采集输出电压的电压采集模块，以及用于采集输出电流的电流采集模块。
在介绍了电压控制系统之后，下面将对本申请实施例提供的电压变换器的控制装置进行介绍。
图3是本申请实施例提供的第一种电压变换器的控制装置的结构示意图。如图3所示，电压变换器的控制装置10包括第一控制模块11、电流调制模块12和第二控制模块13。
第一控制模块11，用于根据电压变换器20的输出电压和给定电压值得到电流参考值。
其中，给定电压值可以根据具体场景和实际需求设置。示例性地，在V2G模式下或者V2L模式下，给定电压值可以是电池30的最小放电电压。又一示例性地，在G2V模式下，给定电压值可以是电池30的标定充电电压。
在一些实施例中，可以先通过减法器计算电压变换器的输出电压和给定电压值之间的差值，然后经过比例积分控制器(Proportional Integral，PI)得到电流参考值。
电流调制模块12，用于在电压变换器20的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值。
在一些实施例中，第一电流阈值可以是根据正常输出电流确定的，比如可以是预设倍数的正常输出电流。其中，预设倍数大于1。
在另一些实施例中，第一电流阈值可以表示过流和非过流之间的界限值。也就是说，如果输出电流超过第一电流阈值，则表示输出电流过流。
在一些实施例中，可以利用比较器来判断电压变换器20的输出电流的绝对值是否大于第一电流阈值的绝对值。
在一些实施例中，可以通过减法器来减小电流参考值。
第二控制模块13，用于根据减小后的电流参考值和输出电流，控制电压变换器的输出电流。
本申请实施例的电压变换器的控制装置，当电压变换器的输出电流过流时，即从电压变换器输出端采集的输出电流的绝对值大于第一电流阈值的绝对值时，能够减小电流参考值，并利用减小后的电流参考值和输出电流控制电压变换器的输出电流。相较于现有的电压变换器的控制方案，由于在电压变换器的输出电流过流时，可及时减小的电流参考值，从而实现了在电压变换器的输出电流过流时，对电压变换器的及时调整。
在一些实施例中，图4是本申请实施例提供的第二种电压变换器的控制装置的结构示意图。图4与图3的不同之处在于，电流调制模块12包括第一比较单元121和电流调制单元122。
第一比较单元121，用于获取输出电流和第一电流阈值，以及在输出电流的绝对值大于第一电流阈值的绝对值的情况下，输出第一信号。
其中，当第一比较单元121输出第一信号时，即表示电压变换器的输出电流过流。
在一个示例中，若输出电流被提供至第一比较单元121的正相输入端，第一电流阈值被提供至第一比较单元121的反相输入端，则第一信号可以是低电平信号。也就是说，在输出电流大于第一电流阈值的情况下，第一比较单元121输出低电平信号。在一个具体的示例中，第一电流阈值可以由相关寄存器提供，用户可以通过软件来调整相关寄存器中的第一电流阈值。示例性地，可以通过将数字量转换为模拟量的(DA converter，DA)转换器来设置第一电流阈值。
在一个实施例中，第一比较单元包括第一比较子系统(Comparator Subsystem，CMPSS)。
需要说明的是，在一种采用纯软件控制策略的相关技术中，需要经过如下流程实现过流保护功能：首先需要采集待保护电路在预设时间段内的多个电流数据(用于表征待保护电路的实际元器件参数)，其次需要对多个电流数据进行有效电流筛选；根据筛选处理后的结果，确定与待保护电路对应的目标过流保护值。由此可见，通过软件实现过流保护，需要经过采样和滤波，电流响应时延相对较长。由于电压变换器的开关比如金氧半场效晶体管(Metal-Oxide-Semiconductor Field-Effect  Transistor，MOSFET)的硬件特性要求的电流响应时延较短，所以纯软件的实现方案，风险较大。
在另一种纯硬件控制策略的相关技术中，通过纯硬件方案实现过流限流保护功能至少需要如下器件单元：采样单元，滤波单元，运算处理单元，比较动作单元，成本较高。
在本实施例中，由于CMPSS是数字信号处理(Digital Signal Processing，DSP)芯片的组成模块，CMPSS自带模拟电路功能，从而能够减小电流响应时延，提高电压变换器的安全性，且相较于纯硬件方案能够降低成本。
此外，由于CMPSS具备高侧比较单元(COMPH)，可以对正电流与第一电流阈值的正值进行比较，且CMPSS还具备低侧比较单元(COMPL)，可以对负电流与第一电流阈值的负值进行比较。从而，在电动汽车的使用场景下，比如在V2G和G2V模式下，即使电流流动方向相反，也可以利用CMPSS实现输出电流与第一电流阈值的比较。示例性地，在COMPH单元，第一电流阈值可以是正值，比如55安培(A)，在COMPL单元，第一电流阈值可以是负值，比如-55A。具体地，相关寄存器产生第一电流阈值之后，可以经过DA转换器得到第一电流阈值的正值和第一电流阈值的负值。
电流调制单元122，用于响应第一信号，减小电流参考值。
在本实施例中，在双环控制策略中，当电流出现超调时，可以及时通过第一比较单元121反馈电流信号，调整电流内环的电流参考值，不必修改PI环路的控制参数，在保证PI环动态响应速度的情况下，尽量避免了PI环的超调。
在一个实施例中，图5是本申请实施例提供的第三种电压变换器的控制装置的结构示意图。图5与图4的不同之处在于，电流调制单元122包括处理子单元1221和电流调制子单元1222。
处理子单元1221，用于响应第一信号，确定电流调小量。在一些实施例中，电流调小量可以是一个定值。示例性地，只要接收到第一比较单元121发送的低电平信号，即生成电流调小量。
电流调制子单元1222，用于将电流参考值减小电流调小量，得到减小后的电流参考值。其中，减小后的电流参考值可以等于减小前的电流参考量和电流调小量的差值。
示例性地，电流调制子单元1222可以具体实现为减法器。具体地，将电流参考值和电流调小量输入到减法器之后，可以输出减小后的电流参考值。
在一些实施例中，图6是本申请实施例提供的第四种电压变换器的控制装置的结构示意图。图6与图3的不同之处在于，第二控制模块13包括控制单元131和第一信号生成单元132。
控制单元131，用于根据减小后的电流参考值和输出电流，生成输出电流的调整量。
在一些实施例中，控制单元131可以具体实现为减法器和PI控制器。具体地，将电流参考值和输出电流输入PI控制器之后，可以得到二者的差值，然后经过PI控制器得到输出电流的调整量。
第一信号生成单元132，用于根据输出电流的调整量，生成电压变换器的控制信号。
在一个实施例中，第一信号生成单元132包括：第一改进型脉宽调制(Enhanced Pulse Width Modulator，ePWM)单元。具体地，可以通过ePWM产生控制信号的周期和占空比。
在一个示例中，ePWM单元和CMPSS是同一DSP芯片的组成单元，通过合理配置，可以利用一个DSP芯片实现对电压变换器的控制，从而减小硬件电路成本。示例性地，DSP芯片的型号可以为DSP28337D。
在一些实施例中，控制单元131包括：差值确定子单元和调整量确定子单元。
差值确定子单元，用于确定减小后的电流参考值和输出电流的差值。
在一个示例中，差值确定子单元可以具体实现为减法器。
调整量确定子单元，用于根据差值确定调整量。
在一个具体的示例中，调整量确定子单元可以具体实现为PI控制器。
需要说明的是，差值确定子单元和调整量确定子单元可以参见控制单元131的相关说明，在此不再赘述。
为了便于理解，图7是本申请实施例提供的一种示例性的电压变换器的控制装置的控制逻辑的示意图。
如图7所示，电压变换器20的输出电压Vbat和给定电压值VbatBMS进行减法运算后，得到电压差值。将电压差值进行PI运算后，得到电流参考值。
第一CMPSS获取输出电流Iout，在输出电流Iout的绝对值大于第一电流阈值的绝对值的情况下，输出第一信号。
电流参考值和第一信号进行减法运算后，得到减小后的电流参考值。然后将减小后的电流参考值和输出电流Iout进行减法运算，得到二者的差值。接着，将二者的差值进行PI运算后，得到输出电流的调整量。在一示例性实施例中，PI运算可以由比例-积分-谐振(PI-RES)控制器实现。
最后，将输出电流的调整量输入第一ePWM单元，得到电压变换器20的控制信号。
在一些实施例中，为了进一步防止双闭环控制策略产生的输出电流超调现象，图8是本申请实施例提供的第五种电压变换器的控制装置的结构示意图。图8与图3的不同之处在于，电压变换器的控制装置10还包括第三控制模块14。
第三控制模块14，用于在输出电流的绝对值大于第二电流阈值的绝对值的情况下，控制电压变换器停止输出电流。
其中，第二电流阈值的绝对值大于第一电流阈值的绝对值。
其中，第二电流阈值的具体内容可以参见第一电流阈值的相关说明，在此不再赘述。
示例性地，若第一电流阈值为55A，则第二电流阈值可以为60A。需要说明的是，第一电流阈值和第二电流阈值可以根据实际场景和具体需求设置，比如可以将第二电流阈值设置为第一电流阈值的预设倍数，预设倍数大于1。当输出电流的绝对值大于第二电流阈值的绝对值时，表示发生严重超调，比如，第二电流阈值可以根据电压变换器的最大可承受电流设置。
在一个实施例中，图9是本申请实施例提供的第六种电压变换器的控制装置的结构示意图。图9与图8的不同之处在于，第三控制模块14包括第二比较单元141和第二信号生成单元142。
第二比较单元141，用于获取输出电流和第二电流阈值，以及在输出电流的绝对值大于第二电流阈值的绝对值的情况下，输出控制指令。
其中，控制指令用于控制电压变换器停止输出电流。示例性地，可以通过控制电压变换器20的全部开关单元断开，来实现停止输出电流。
在一个示例中，第二比较单元141包括第二CMPSS。需要说明的是，第二CMPSS与第一CMPSS可以是两个不同的CMPSS。
第二CMPSS的具体内容可以参见第一CMPSS的相关说明，在此不再赘述。示例性地，在第二CMPSS的COMPH单元，第二电流阈值可以是正值，比如60A，在第二CMPSS的COMPL单元，第二电流阈值可以是负值，比如-60A。
第二信号生成单元142，还用于响应控制指令，生成电压变换器20的控制信号。该控制信号用于控制变换器停止工作。
在一个示例中，第二信号生成单元142包括：事件触发子单元，用于响应控制指令，将控制信号调制为低电平信号。此时，通过事件触发子单元，触发强制事件，此时将电压变换器20的控制信号强制调制为低电平信号。
示例性地，第二信号生成单元包括：第二ePWM单元。相应地，事件触发子单元可以是第二ePWM单元中的触发(Trip)子模块，Trip子模块可以触发第二ePWM单元的强制事件。
为了便于理解，图10是本申请实施例提供的另一种示例性的电压变换器的控制装置的控制逻辑的示意图。
如图10所示，第二CMPSS获取输出电流Iout之后，若确定输出电流Iout的绝对值大于第二电流阈值的绝对值，则会向第二ePWM单元输出控制指令，第二ePWM单元响应于该控制指令，触发强制事件，将控制信号强制调制为低电平信号，控制输出电流Iout等于零。
基于相同的申请构思，本申请实施例除了提供了电压变换器的控制装置之外，还提供了与之对应的电压变换器的控制方法。
下面结合附图，详细介绍根据本申请实施例提供的电压变换器的控制方法。
图11是本申请实施例提供的一种电压变换器的控制方法的流程示意图。如图11所示，电压变换器的控制方法包括S1110至S1130。
S1110，根据电压变换器的输出电压和给定电压值得到电流参考值。
S1120，在电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值。
S1130，根据减小后的电流参考值和输出电流，控制电压变换器的输出电流。
本申请实施例的电压变换器的控制方法，当电压变换器的输出电流过流时，即从电压变换器输出端采集的输出电流的绝对值大于第一电流阈值的绝对值时，能够减小电流参考值，并利用减小后的电流参考值和输出电流控制电压变换器的输出电流。相较于现有的电压变换器的控制方案，由于在电压变换器的输出电流过流时，可及时减小的电流参考值，从而实现了在电压变换器的输出电流过流时，对电压变换器的及时调整。
在本申请的一些实施例中，S1120具体包括：
获取输出电流和第一电流阈值，以及在输出电流的绝对值大于第一电流阈值的绝对值的情况下，输出第一信号；
响应第一信号，减小电流参考值。
在本申请的一些实施例中，S1130具体包括：
根据减小后的电流参考值和输出电流，生成输出电流的调整量；
根据调整量，生成电压变换器的控制信号。
在本申请的一些实施例中，S1130中的根据调整量，生成电压变换器的控制信号，具体包括：
差值确定子单元，用于确定减小后的电流参考值和输出电流的差值；
调整量确定子单元，用于根据差值确定调整量。
在本申请的一些实施例中，S1120中的响应第一信号，减小电流参考值，具体包括：
响应第一信号，确定电流调小量；
将电流参考值减小电流调小量，得到减小后的电流参考值。
在本申请的一些实施例中，图12是本申请实施例提供的另一种电压变换器的控制方法的流程示意图。图12与图11的不同之处在于，在S1130之后，电压变换器的控制方法还包括S1140。
S1140，在输出电流的绝对值大于第二电流阈值的绝对值的情况下，控制电压变化器停止输出电流。
其中，第二电流阈值的绝对值大于第一电流阈值的绝对值。
在本申请的一些实施例中，S1140具体包括：
获取输出电流和第二电流阈值，以及在输出电流的绝对值大于第二电流阈值的绝对值的情况下，输出控制指令，控制指令用于控制电压变换器停止输出电流；
响应控制指令，生成电压变换器的控制信号。
在本申请的一些实施例中，S1140中的响应控制指令，生成电压变换器的控制信号，具体包括：
响应控制指令，将控制信号调制为低电平信号。
根据本申请实施例的电压变换器的控制方法的其他细节，与以上结合图3至图10所示实例描述的电压变换器的控制装置类似，并能达到其相应的技术效果，为简洁描述，在此不再赘述。
图13示出了本申请实施例提供的电压变换器的控制设备的硬件结构示意图。
电压变换器的控制设备可以包括处理器1301以及存储有计算机程序指令的存储器1302。
具体地，上述处理器1301可以包括中央处理器(Central Processing Unit，CPU)，或者特定集成电路(Application Specific Integrated Circuit，ASIC)，或者可以被配置成实施本申请实施例的一个或多个集成电路。
存储器1302可以包括用于数据或指令的大容量存储器。举例来说而非限制，存储器1302可包括硬盘驱动器(Hard Disk Drive，HDD)、软盘驱动器、闪存、光盘、磁光盘、磁带或通用串行总线(Universal Serial Bus，USB)驱动器或者两个或 更多个以上这些的组合。在一些实例中，存储器1302可以包括可移除或不可移除(或固定)的介质，或者存储器1302是非易失性固态存储器。在一些实施例中，存储器1302可在电压变换器的控制设备的内部或外部。
在一些实例中，存储器1302可以是只读存储器(Read Only Memory，ROM)。在一个实例中，该ROM可以是掩模编程的ROM、可编程ROM(PROM)、可擦除PROM(EPROM)、电可擦除PROM(EEPROM)、电可改写ROM(EAROM)或闪存或者两个或更多个以上这些的组合。
存储器1302可以包括只读存储器(ROM)，随机存取存储器(RAM)，磁盘存储介质设备，光存储介质设备，闪存设备，电气、光学或其他物理/有形的存储器存储设备。因此，通常，存储器包括一个或多个编码有包括计算机可执行指令的软件的有形(非暂态)计算机可读存储介质(例如，存储器设备)，并且当该软件被执行(例如，由一个或多个处理器)时，其可操作来执行参考根据本公开的一方面的方法所描述的操作。
处理器1301通过读取并执行存储器1302中存储的计算机程序指令，以实现图11和图12所示实施例中的方法，并达到图11和图12所示实例执行其方法达到的相应技术效果，为简洁描述在此不再赘述。
在一个示例中，电压变换器的控制设备还可包括通信接口1303和总线1310。其中，如图13所示，处理器1301、存储器1302、通信接口1303通过总线1310连接并完成相互间的通信。
通信接口1303，主要用于实现本申请实施例中各模块、装置、单元和/或设备之间的通信。
总线1310包括硬件、软件或两者，将在线数据流量计费设备的部件彼此耦接在一起。举例来说而非限制，总线可包括加速图形端口(Accelerated Graphics Port，AGP)或其他图形总线、增强工业标准架构(Extended Industry Standard Architecture，EISA)总线、前端总线(Front Side Bus，FSB)、超传输(Hyper Transport，HT)互连、工业标准架构(Industry Standard Architecture，ISA)总线、无限带宽互连、低引脚数(LPC)总线、存储器总线、微信道架构(MCA)总线、外围组件互连(PCI)总线、PCI-Express(PCI-X)总线、串行高级技术附件(SATA)总线、视频电子标准协会局部(VLB)总线或其他合适的总线或者两个或更多个以上这些的组合。在合适的情况下，总线1310可包括一个或多个总线。尽管本申请实施例描述和示出了特定的总线，但本申请考虑任何合适的总线或互连。
该电压变换器的控制设备可以执行本申请实施例中的电压变换器的控制方法，从而实现结合图3至图12描述的电压变换器的控制方法和装置。
另外，结合上述实施例中的电压变换器的控制方法，本申请实施例可提供一种计算机存储介质来实现。该计算机存储介质上存储有计算机程序指令；该计算机 程序指令被处理器执行时实现上述实施例中的任意一种电压变换器的控制方法。
需要明确的是，本申请并不局限于上文所描述并在图中示出的特定配置和处理。为了简明起见，这里省略了对已知方法的详细描述。在上述实施例中，描述和示出了若干具体的步骤作为示例。但是，本申请的方法过程并不限于所描述和示出的具体步骤，本领域的技术人员可以在领会本申请的精神后，作出各种改变、修改和添加，或者改变步骤之间的顺序。
以上的结构框图中所示的功能块可以实现为硬件、软件、固件或者它们的组合。当以硬件方式实现时，其可以例如是电子电路、专用集成电路(Application Specific Integrated Circuit，ASIC)、适当的固件、插件、功能卡等等。当以软件方式实现时，本申请的元素是被用于执行所需任务的程序或者代码段。程序或者代码段可以存储在机器可读介质中，或者通过载波中携带的数据信号在传输介质或者通信链路上传送。“机器可读介质”可以包括能够存储或传输信息的任何介质。机器可读介质的例子包括电子电路、半导体存储器设备、ROM、闪存、可擦除ROM(EROM)、软盘、CD-ROM、光盘、硬盘、光纤介质、射频(Radio Frequency，RF)链路，等等。代码段可以经由诸如因特网、内联网等的计算机网络被下载。
还需要说明的是，本申请中提及的示例性实施例，基于一系列的步骤或者装置描述一些方法或系统。但是，本申请不局限于上述步骤的顺序，也就是说，可以按照实施例中提及的顺序执行步骤，也可以不同于实施例中的顺序，或者若干步骤同时执行。
上面根据本公开的实施例的方法、装置、设备和计算机程序产品的流程图和/或框图描述了本公开的各方面。应当理解，流程图和/或框图中的每个方框以及流程图和/或框图中各方框的组合可以由计算机程序指令实现。这些计算机程序指令可被提供给通用计算机、专用计算机或其它可编程数据处理装置的处理器，以产生一种机器，使得经由计算机或其它可编程数据处理装置的处理器执行的这些指令触发对流程图和/或框图的一个或多个方框中指定的功能/动作的实现。这种处理器可以是但不限于是通用处理器、专用处理器、特殊应用处理器或者现场可编程逻辑电路。还可理解，框图和/或流程图中的每个方框以及框图和/或流程图中的方框的组合，也可以由执行指定的功能或动作的专用硬件来实现，或可由专用硬件和计算机指令的组合来实现。
以上，仅为本申请的具体实施方式，所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、模块和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。应理解，本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。

Claims (20)

  1. 一种电压变换器的控制装置，包括：
    第一控制模块，用于根据所述电压变换器的输出电压和给定电压值得到电流参考值；
    电流调制模块，用于在所述电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值；
    第二控制模块，用于根据所述减小后的电流参考值和所述输出电流，控制所述电压变换器的输出电流。
  2. 根据权利要求1所述的电压变换器的控制装置，其中，所述电流调制模块包括：
    第一比较单元，用于获取所述输出电流和第一电流阈值，以及在所述输出电流的绝对值大于所述第一电流阈值的绝对值的情况下，输出第一信号；
    电流调制单元，用于响应所述第一信号，减小所述电流参考值。
  3. 根据权利要求2所述的电压变换器的控制装置，其中，所述第一比较单元包括第一比较子系统CMPSS。
  4. 根据权利要求1-3中任一项所述的电压变换器的控制装置，其中，所述第二控制模块包括：
    控制单元，用于根据所述减小后的电流参考值和所述输出电流，生成所述输出电流的调整量；
    第一信号生成单元，用于根据所述调整量，生成所述电压变换器的控制信号，以利用所述控制信号控制所述电压变换器的输出电流。
  5. 根据权利要求4所述的电压变换器的控制装置，其中，所述第一信号生成单元包括：第一改进型的脉冲宽度调制ePWM单元。
  6. 根据权利要求4或5所述的电压变换器的控制装置，其中，所述控制单元包括：
    差值确定子单元，用于确定所述减小后的电流参考值和所述输出电流的差值；
    调整量确定子单元，用于根据所述差值确定所述调整量。
  7. 根据权利要求1-6中任一项所述的电压变换器的控制装置，其中，所述装置还包括：
    第三控制模块，用于在所述输出电流的绝对值大于第二电流阈值的绝对值的情况下，控制所述电压变换器停止输出电流，
    其中，所述第二电流阈值的绝对值大于所述第一电流阈值的绝对值。
  8. 根据权利要求7所述的电压变换器的控制装置，其中，所述第三控制模块包括：
    第二比较单元，用于获取所述输出电流和所述第二电流阈值，以及在所述输出电流的绝对值大于第二电流阈值的绝对值的情况下，输出控制指令，所述控制指令用于 控制所述电压变换器停止输出电流；
    第二信号生成单元，用于响应所述控制指令，生成所述电压变换器的控制信号。
  9. 根据权利要求8所述的电压变换器的控制装置，其中，
    所述第二比较单元包括第二CMPSS。
  10. 根据权利要求8或9所述的电压变换器的控制装置，其中，所述第二信号生成单元包括：
    事件触发子单元，用于响应所述控制指令，将所述控制信号调制为低电平信号。
  11. 根据权利要求8-10中任一项所述的电压变换器的控制装置，其中，
    所述第二信号生成单元包括：第二ePWM单元。
  12. 根据权利要求2或3所述的电压变换器的控制装置，其中，所述电流调制单元，包括：
    处理子单元，用于响应所述第一信号，确定电流调小量；
    电流调制子单元，用于将所述电流参考值减小所述电流调小量，得到减小后的电流参考值。
  13. 根据权利要求1-12中任一项所述的电压变换器的控制装置，其中，
    所述电压变换器的一端与电池连接，所述电压变换器的另一端与电网或者交流负载连接。
  14. 一种电压变换器的控制方法，包括：
    根据所述电压变换器的输出电压和给定电压值得到电流参考值；
    在所述电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值；
    根据所述减小后的电流参考值和所述输出电流，控制所述电压变换器的输出电流。
  15. 根据权利要求14所述的方法，其中，所述在所述电压变换器的输出电流的绝对值大于第一电流阈值的绝对值的情况下，减小电流参考值，具体包括：
    获取所述输出电流和第一电流阈值，以及在所述输出电流的绝对值大于所述第一电流阈值的绝对值的情况下，输出第一信号；
    响应所述第一信号，确定电流调小量；
    将所述电流参考值减小所述电流调小量，得到减小后的电流参考值。
  16. 根据权利要求14或15所述的方法，其中，所述根据所述减小后的电流参考值和所述输出电流，控制所述电压变换器的输出电流，具体包括：
    根据所述减小后的电流参考值和所述输出电流，生成所述输出电流的调整量；
    根据所述调整量，生成所述电压变换器的控制信号，以利用所述控制信号控制所述电压变换器的输出电流。
  17. 根据权利要求14-16中任一项所述的方法，其中，所述根据所述电压变换器的输出电压和给定电压值得到电流参考值之后，所述方法，还包括：
    在所述输出电流的绝对值大于第二电流阈值的绝对值的情况下，控制所述电压变换器停止输出电流，其中，所述第二电流阈值的绝对值大于所述第一电流阈值的绝对 值。
  18. 一种电压控制系统，包括：
    如权利要求1-13任一项所述的电压变换器的控制装置；以及
    所述电压变换器。
  19. 一种电压变换器的控制设备，包括处理器以及存储有计算机程序指令的存储器；所述处理器通过读取并执行所述存储器中存储的计算机程序指令，实现如权利要求14-17任一项所述的电压变换器的控制方法。
  20. 一种计算机存储介质，所述计算机存储介质上存储有计算机程序指令；所述计算机程序指令被处理器执行时实现如权利要求14-17任一项所述的电压变换器的控制方法。
PCT/CN2021/129511 2020-12-31 2021-11-09 电压变换器的控制方法、装置以及电压控制系统 Ceased WO2022142745A1 (zh)

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CN112290776B (zh) * 2020-12-31 2021-06-08 江苏时代新能源科技有限公司 电压变换器的控制方法、装置以及电压控制系统
FR3154358A1 (fr) * 2023-10-20 2025-04-25 Vitesco Technologies Dispositif de commande de convertisseur, véhicule et procédé de commande associés

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103280960A (zh) * 2013-05-31 2013-09-04 华为技术有限公司 限流装置及限流方法
CN106385101A (zh) * 2016-09-22 2017-02-08 广东寰宇电子科技股份有限公司 一种大功率型电梯自动救援装置实现供电的方法及装置
CN108011506A (zh) * 2017-11-23 2018-05-08 郑州云海信息技术有限公司 一种逆变器的限流控制方法及系统
CN112290776A (zh) * 2020-12-31 2021-01-29 江苏时代新能源科技有限公司 电压变换器的控制方法、装置以及电压控制系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838524A (en) * 1997-03-21 1998-11-17 Cherry Semiconductor Corporation Current limit circuit for inhibiting voltage overshoot
GB0025014D0 (en) * 2000-10-12 2000-11-29 Gspk Electronics Ltd Power converter circuitry
US6700360B2 (en) * 2002-03-25 2004-03-02 Texas Instruments Incorporated Output stage compensation circuit
CN100442620C (zh) * 2005-02-03 2008-12-10 昂宝电子（上海）有限公司 用于开关电源变换器的多阈值过流保护的系统和方法
JP4691404B2 (ja) * 2005-06-24 2011-06-01 三洋電機株式会社 スイッチング制御回路、自励型ｄｃ−ｄｃコンバータ
TWI357204B (en) * 2008-09-25 2012-01-21 Advanced Analog Technology Inc A low drop out regulator with over-current protect
CN103078298B (zh) 2013-01-12 2015-09-02 华南理工大学 一种igbt的过流分级保护电路及控制方法
CN103078485B (zh) * 2013-01-28 2015-08-19 华为技术有限公司 一种逆变器输出限流保护方法及装置
CN104423407B (zh) * 2013-08-28 2016-05-25 联发科技（新加坡）私人有限公司 低压差线性稳压器及其启动方法、电子装置和芯片
US9379625B2 (en) * 2013-12-26 2016-06-28 Dialog Semiconductor Inc. Current meter for load modulation communication receiver architecture
JP6747964B2 (ja) 2016-12-22 2020-08-26 東芝テック株式会社 非接触給電装置及びプログラム
US11271483B2 (en) * 2018-10-17 2022-03-08 Texas Instruments Incorporated Bias power regulator circuit for isolated converters with a wide output voltage range
US10916940B2 (en) * 2019-07-03 2021-02-09 Neworld.Energy Llc Grid-tied electric meter adapter and systems for automated power resilience and on-demand grid balancing
CN110707657B (zh) 2019-10-28 2022-01-28 深圳市施罗德工业集团有限公司 一种过流保护设定方法、过流保护方法及装置
JP6824362B1 (ja) 2019-10-28 2021-02-03 三菱電機株式会社 電力変換装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103280960A (zh) * 2013-05-31 2013-09-04 华为技术有限公司 限流装置及限流方法
CN106385101A (zh) * 2016-09-22 2017-02-08 广东寰宇电子科技股份有限公司 一种大功率型电梯自动救援装置实现供电的方法及装置
CN108011506A (zh) * 2017-11-23 2018-05-08 郑州云海信息技术有限公司 一种逆变器的限流控制方法及系统
CN112290776A (zh) * 2020-12-31 2021-01-29 江苏时代新能源科技有限公司 电压变换器的控制方法、装置以及电压控制系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4075650A4 *

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