WO2022059559A1 - Dispositif de commande de convertisseur de puissance - Google Patents

Dispositif de commande de convertisseur de puissance Download PDF

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Publication number
WO2022059559A1
WO2022059559A1 PCT/JP2021/032841 JP2021032841W WO2022059559A1 WO 2022059559 A1 WO2022059559 A1 WO 2022059559A1 JP 2021032841 W JP2021032841 W JP 2021032841W WO 2022059559 A1 WO2022059559 A1 WO 2022059559A1
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WIPO (PCT)
Prior art keywords
control
unit
circuit
voltage
short
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PCT/JP2021/032841
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English (en)
Japanese (ja)
Inventor
哲也 出羽
幸一 西端
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株式会社デンソー
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Publication of WO2022059559A1 publication Critical patent/WO2022059559A1/fr

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    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
    • 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
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present disclosure relates to a control device for a power converter having a switch for an upper and lower arm electrically connected to the winding of each phase of a rotary electric machine.
  • a control device that performs shutdown control for forcibly switching off the switch of the upper and lower arms when it is determined that an abnormality has occurred in a rotary electric machine or the like.
  • shutdown control if a counter electromotive voltage is generated in the winding due to the rotation of the rotor that constitutes the rotary electric machine, the line voltage of the winding is connected in parallel to the series connection of the switches of the upper and lower arms. It may be higher than the voltage of the storage unit.
  • the situation where the line voltage is high can occur, for example, when the amount of field magnetic flux of the rotor is large or the rotation speed of the rotor is high.
  • Patent Document 1 a control circuit that performs short-circuit control for turning on a switch in one of the upper and lower arms and turning off a switch in the other arm is provided.
  • a control circuit that performs short-circuit control for turning on a switch in one of the upper and lower arms and turning off a switch in the other arm.
  • the short-circuit control may continue to be executed even though the short-circuit control should be canceled.
  • a large circulating current flows in the closed circuit including the winding and the switch, and there is a concern that the switch may fail.
  • Such an abnormality also occurs in a system having a plurality of rotary electric machines and power converters, even in a configuration in which a control circuit is individually provided for each power converter.
  • the main object of the present disclosure is to provide a control device for a power converter capable of appropriately controlling the implementation of short circuit control.
  • the present disclosure controls a power converter applied to a system comprising a plurality of multi-phase rotary electric machines and a power converter having a switch of an upper and lower arm electrically connected to each phase winding of the rotary electric machine.
  • the device includes a control circuit individually provided for each power converter, and each control circuit has an upper and lower arm with respect to a communication target which is a control circuit other than itself among the control circuits.
  • a signal generator that generates a control signal for short-circuit control that turns on the on-side switch that is the switch in one of the arms and turns off the off-side switch that is the switch in the other arm, and the generated control signal.
  • the signal transmitting unit for transmitting the short circuit, the receiving unit for receiving the control signal transmitted from the signal transmitting unit to be communicated, and the control signal for performing the short circuit control are received via the receiving unit. If the short-circuit control is executed and the control signal indicating that the short-circuit control is not executed is received via the receiving unit, the short-circuit control is canceled when an abnormality occurs. It is equipped with a control unit.
  • each control circuit transmits a short-circuit control control signal via a signal transmission unit to a communication target which is a control circuit other than itself among the control circuits.
  • the communication target receives a control signal to the effect that the short-circuit control is performed via the receiving unit
  • the communication target performs the short-circuit control.
  • the communication target releases the short-circuit control.
  • FIG. 1 is an overall configuration diagram of a vehicle according to the first embodiment.
  • FIG. 2 is an overall configuration diagram of the control system.
  • FIG. 3 is a diagram showing a control circuit and its peripheral configuration.
  • FIG. 4 is a flowchart showing a procedure of processing performed by the control system.
  • FIG. 5 is a flowchart showing a procedure of processing performed by the control system according to the second embodiment.
  • FIG. 6 is a flowchart showing a procedure of processing performed by the control system according to the third embodiment.
  • FIG. 7 is a diagram for explaining the control signal according to the fourth embodiment.
  • FIG. 8 is an overall configuration diagram of the control system according to the fifth embodiment.
  • FIG. 9 is a flowchart showing a procedure of processing performed by the control system.
  • control circuit according to the present disclosure is embodied.
  • the control circuit according to this embodiment is applied to a three-phase inverter as a power converter.
  • the control system including two inverters is mounted on a vehicle such as an electric vehicle or a hybrid vehicle.
  • the vehicle 10 includes a control system, and the control system includes a first rotary electric machine 11a, a first inverter 15a, a second rotary electric machine 11b, a second inverter 15b, and a high voltage power supply 30.
  • the first rotary electric machine 11a includes a first rotor 12a and a first winding 13a shown in FIG.
  • the first rotor 12a and the first drive wheel 16a are connected to each other via the first rotation shaft 14a.
  • the first winding 13a is energized and the first rotating shaft 14a rotates. As a result, the first drive wheel 16a rotates.
  • the second rotary electric machine 11b includes a second rotor 12b and a second winding 13b shown in FIG.
  • the second rotor 12b and the second drive wheel 16b are connected via a second rotating shaft 14b.
  • the second winding 13b of the second rotating electric machine 11b is energized, and the second rotating shaft 14b rotates. As a result, the second drive wheel 16b rotates.
  • the vehicle 10 can run by rotating at least one of the drive wheels 16a and 16b.
  • the first drive wheel 16a is the front wheel of the vehicle 10
  • the second drive wheel 16b is the rear wheel of the vehicle 10.
  • the first inverter 15a includes a first switching device unit 20a.
  • the first switching device unit 20a includes a series connection body of the upper arm switch SWH and the lower arm switch SWL for three phases. In each phase, the first end of the first winding 13a is connected to the connection points of the upper and lower arm switches SWH and SWL. The second end of each phase first winding 13a is connected at a neutral point.
  • the first windings 13a of each phase are arranged so as to be offset by 120 ° from each other by the electric angle.
  • a voltage-controlled semiconductor switching element is used as each switch SWH and SWL, and more specifically, an IGBT is used.
  • the upper and lower arm diodes DH and DL which are freewheel diodes, are connected in antiparallel to the upper and lower arm switches SWH and SWL.
  • the second inverter 15b includes a second switching device unit 20b.
  • the configurations of the first and second switching device units 20a and 20b are basically the same. Therefore, a detailed description of the second switching device unit 20b will be omitted.
  • the first end of the second winding 13b is connected to the connection points of the upper and lower arm switches SWH and SWL.
  • the positive electrode terminal of the high voltage power supply 30 is connected to the collector which is the high potential side terminal of each upper arm switch SWH via the high potential side electric path 22H. ..
  • the negative electrode terminal of the high voltage power supply 30 is connected to the emitter which is the low potential side terminal of each lower arm switch SWL via the low potential side electric path 22L. ..
  • the high voltage power supply 30 is a secondary battery, and its output voltage (rated voltage) is, for example, 100 V or more.
  • the high potential side electric path 22H is provided with a first cutoff switch 23a
  • the low potential side electric path 22L is provided with a second cutoff switch 23b.
  • Each switch 23a, 23b is, for example, a relay or a semiconductor switching element.
  • the switches 23a and 23b are driven by the first control circuit 50a included in the first inverter 15a, the second control circuit 50b included in the second inverter 15b, or a control device higher than the control circuits 50a and 50b. Will be done.
  • the control system is equipped with an in-vehicle electric device 25.
  • the electrical device 25 includes, for example, at least one of an electric compressor and a DCDC converter.
  • the electric compressor constitutes an air conditioner in the vehicle interior and is driven by being supplied with power from a high-voltage power source 30 in order to circulate the refrigerant in the in-vehicle refrigeration cycle.
  • the DCDC converter steps down the output voltage of the high-voltage power supply 30 and supplies it to the vehicle-mounted low-voltage load.
  • the low voltage load includes the low voltage power supply 31 shown in FIG.
  • the low voltage power supply 31 is a secondary battery whose output voltage (rated voltage) is lower than the output voltage (rated voltage) of the high voltage power supply 30, for example, a lead storage battery.
  • the first inverter 15a includes a smoothing capacitor 24 as a "storage unit".
  • the smoothing capacitor 24 is located on the first and second switching device portions 20a and 20b of the high potential side electric path 22H with respect to the first cutoff switch 23a, and is the second of the low potential side electric paths 22L with respect to the second cutoff switch 23b. 1.
  • the second switching device units 20a and 20b are electrically connected to each other.
  • the smoothing capacitor 24 may be provided in the second inverter 15b instead of the first inverter 15a, or may be provided outside the inverters 15a and 15b.
  • the control system includes a phase current sensor 40 and a temperature sensor 41.
  • the phase current sensor 40 individually detects the current flowing through each of the rotary electric machines 11a and 11b.
  • the phase current sensor 40 detects at least two phases of the U, V, and W phase currents flowing through the rotary electric machines 11a and 11b.
  • the temperature sensor 41 individually detects the temperature of each of the switching device units 20a and 20b.
  • the temperature sensor 41 detects the temperature of at least one switch among the switches SWH and SWL constituting the switching device units 20a and 20b, or the temperature of the peripheral configuration thereof.
  • each control circuit 50a and 50b will be described with reference to FIG.
  • the first control circuit 50a includes a first microcomputer 51a provided in a low voltage region.
  • the current signal of the phase current sensor 40 and the temperature signal of the temperature sensor 41 are input to the first microcomputer 51a.
  • the first microcomputer 51a calculates the phase current Ir flowing through the first rotary electric machine 11a based on the input current signal.
  • the first microcomputer 51a calculates the temperature of the detection target of the temperature sensor 41 based on the input temperature signal.
  • the first control circuit 50a includes a first voltage detection unit 64a.
  • the first voltage detection unit 64a is provided in the low voltage region and the high voltage region across the boundary between the low voltage region and the high voltage region electrically isolated from the low voltage region.
  • the first voltage detection unit 64a outputs a voltage signal corresponding to the terminal voltage of the smoothing capacitor 24.
  • the voltage signal output from the first voltage detection unit 64a is input to the first microcomputer 51a.
  • the first voltage detection unit 64a has a conversion function of stepping down the terminal voltage of the smoothing capacitor 24 to a voltage range (for example, 0 to 5V) that can be input to the first microcomputer 51a.
  • the first microcomputer 51a detects the terminal voltage of the smoothing capacitor 24 based on the input voltage signal.
  • the first microcomputer 51a generates a switching command composed of an on command and an off command of each switch SWH and SWL.
  • the first microcomputer 51a issues a switching command for executing normal drive control and three-phase short-circuit control (ASC: Active Short Circuit) based on the detection voltage VH of the first voltage detection unit 64a. Generate one of the switching directives to implement.
  • ASC Active Short Circuit
  • the control amount of the first rotary electric machine 11a is controlled to the command value.
  • the control amount is, for example, torque.
  • the detection voltage VH of the first voltage detection unit 64a is equal to or less than a predetermined value, it is determined that an overvoltage abnormality has not occurred, and normal drive control is performed.
  • the upper arm switch SWH is turned off and the lower arm switch SWL is turned on.
  • the detection voltage VH of the first voltage detection unit 64a is higher than a predetermined value, it is determined that an overvoltage abnormality has occurred, and three-phase short-circuit control is performed.
  • the shutdown control for forcibly turning off the upper and lower arm switches SWH and SWL may be implemented.
  • the lower arm switch SWL corresponds to the "on side switch” and the upper arm switch SWH corresponds to the "off side switch".
  • the first control circuit 50a includes a first insulated power supply 60a, a first transmission unit 61a, and a first driver 70a.
  • the first insulated power supply 60a and the first transmission unit 61a are provided in the low voltage region and the high voltage region across the boundary between the low voltage region and the high voltage region.
  • the first driver 70a is provided in a high pressure region.
  • the first driver 70a has an upper arm driver and a lower arm driver.
  • the upper arm driver is individually provided corresponding to each upper arm switch SWH of the first switching device unit 20a.
  • the lower arm driver is individually provided corresponding to each lower arm switch SWL of the first switching device unit 20a. Therefore, a total of six first drivers 70a are provided.
  • the first isolated power supply 60a generates and outputs power to be supplied to the first driver 70a based on the output voltage of the low voltage power supply 31.
  • the first isolated power supply 60a includes an upper arm insulated power supply individually provided for each of the three-phase upper arm drivers constituting the first driver 70a and a three-phase insulating power supply constituting the first driver 70a. It is equipped with a lower arm isolated power supply common to the lower arm driver. The lower arm isolated power supply may be individually provided for each of the three-phase lower arm drivers constituting the first driver 70a.
  • the first transmission unit 61a transmits a switching command output from the first microcomputer 51a to the first driver 70a while electrically insulating between the low voltage region and the high voltage region.
  • the configuration of the first transmission unit 61a on the high voltage region side is configured to be operable by being supplied with power from the first insulated power supply 60a.
  • the configuration of the first transmission unit 61a on the low voltage region side is configured to be operable by being supplied with power from the low voltage power supply 31.
  • the first transmission unit 61a is, for example, a photocoupler or a magnetic coupler.
  • the upper arm driver constituting the first driver 70a supplies a charging current to the gate of the corresponding upper arm switch SWH when an on command is input. As a result, the gate voltage VgH of the upper arm switch SWH becomes equal to or higher than the threshold voltage Vth, and the upper arm switch SWH is turned on. On the other hand, when the off command is input, the upper arm driver constituting the first driver 70a causes a discharge current to flow from the gate of the corresponding upper arm switch SWH to the emitter side. As a result, the gate voltage VgH of the upper arm switch SWH becomes less than the threshold voltage Vth, and the upper arm switch SWH is turned off.
  • the lower arm driver constituting the first driver 70a supplies a charging current to the gate of the corresponding lower arm switch SWL when an on command is input.
  • the gate voltage VgL of the lower arm switch SWL becomes equal to or higher than the threshold voltage Vth, and the lower arm switch SWL is turned on.
  • the lower arm driver constituting the first driver 70a causes a discharge current to flow from the gate of the corresponding lower arm switch SWL to the emitter side.
  • the gate voltage VgL of the lower arm switch SWL becomes less than the threshold voltage Vth, and the lower arm switch SWL is turned off.
  • the second control circuit 50b includes a second microcomputer 51b, a second insulated power supply 60b, a second transmission unit 61b, a second voltage detection unit 64b, and a second driver 70b.
  • these configurations are basically the same as the configurations of the first control circuit 50a. Therefore, a detailed description of the second control circuit 50b will be omitted.
  • the second microcomputer 51b corresponds to the first microcomputer 51a
  • the second insulated power supply 60b corresponds to the first insulated power supply 60a
  • the second transmission unit 61b corresponds to the first transmission unit 61a
  • the second voltage detection unit 64b corresponds to the first voltage detection unit 64a
  • the second driver 70b corresponds to the first driver 70a.
  • the first and second microcomputers 51a and 51b correspond to the "switching command generation unit"
  • the first and second drivers 70a and 70b correspond to the "switch drive unit”
  • 2 Insulated power supplies 60a and 60b correspond to "insulated power supplies for driving”.
  • the execution of the three-phase short circuit control is controlled based on the detection voltage VH of the first voltage detection unit 64a.
  • the execution of the three-phase short-circuit control cannot be controlled. Is a concern.
  • a large circulating current flows through the closed circuit including the lower arm switch SWL of the first winding 13a and the first switching device unit 20a, and the first switching device unit 20a fails. there's a possibility that.
  • the control does not cause an abnormality.
  • the circuit provides a configuration for controlling the implementation of three-phase short circuit control.
  • the first control circuit 50a includes a first monitoring unit 52a, a first transmission unit 53a, a first reception unit 54a, a third transmission unit 62a, and a third isolated power supply 63a.
  • the first monitoring unit 52a, the first transmission unit 53a, and the first reception unit 54a are provided in the low voltage region.
  • the third transmission unit 62a and the third insulated power supply 63a are provided in the low voltage region and the high voltage region across the boundary between the low voltage region and the high voltage region.
  • the configuration of the first monitoring unit 52a and the third transmission unit 62a on the low voltage region side and the third insulated power supply 63a are configured to be operable by being supplied with power from the low voltage power supply 31.
  • the configuration of the third transmission unit 62a on the high voltage region side is configured to be operable by being supplied with power from the third insulated power supply 63a.
  • the third transmission unit 62a is, for example, a photocoupler or a magnetic coupler.
  • the first monitoring unit 52a has a function of monitoring whether or not an abnormality has occurred in the first control circuit 50a, and is composed of, for example, a watchdog counter (WDC) or a function watchdog counter (F-WDC). ing.
  • the first monitoring unit 52a controls a three-phase short circuit to the first control circuit 50a when at least one of the first microcomputer 51a, the first isolated power supply 60a, the first transmission unit 61a, and the first voltage detection unit 64a fails. It is determined that an abnormality that cannot be controlled is occurring.
  • the second control circuit 50b includes a second monitoring unit 52b, a second transmission unit 53b, a second reception unit 54b, a fourth transmission unit 62b, and a fourth isolated power supply 63b.
  • the second monitoring unit 52b, the second transmission unit 53b, and the second reception unit 54b are provided in the low voltage region.
  • the fourth transmission unit 62b and the fourth insulated power supply 63b are provided in the low voltage region and the high voltage region across the boundary between the low voltage region and the high voltage region.
  • the configuration of the second monitoring unit 52b and the fourth transmission unit 62b on the low voltage region side and the fourth insulated power supply 63b are configured to be operable by being supplied with power from the low voltage power supply 31.
  • the configuration of the fourth transmission unit 62b on the high voltage region side is configured to be operable by being supplied with power from the fourth insulated power supply 63b.
  • the fourth transmission unit 62b is, for example, a photocoupler or a magnetic coupler.
  • the first and second transmission units 53a and 53b correspond to the "signal transmission unit”
  • the first and second receiving units 54a and 54b correspond to the "reception unit”
  • the third and fourth insulation units correspond to "insulated power supplies in case of abnormality".
  • the second monitoring unit 52b has a function of monitoring whether or not an abnormality has occurred in the second control circuit 50b, and is composed of, for example, a watchdog counter (WDC) or a function watchdog counter (F-WDC). ing.
  • the second monitoring unit 52b controls the second control circuit 50b to perform a three-phase short circuit when at least one of the second microcomputer 51b, the second insulated power supply 60b, the second transmission unit 61b, and the second voltage detection unit 64b fails. It is determined that an abnormality that cannot be controlled is occurring.
  • the first monitoring unit 52a determines that the execution of the three-phase short-circuit control cannot be controlled in the first control circuit 50a
  • the first monitoring unit 52a switches the logic of the notification signal Sg1 to H and outputs it to the first transmission unit 53a. do.
  • the notification signal Sg1 indicates that the logic H has caused an abnormality in which the execution of the three-phase short-circuit control cannot be controlled in the first control circuit 50a
  • the logic L controls the execution of the three-phase short-circuit control in the first control circuit 50a. Indicates that no abnormalities that cannot be performed have occurred.
  • the first transmission unit 53a transmits the input notification signal Sg1 to the second reception unit 54b.
  • the second receiving unit 54b outputs the received notification signal Sg1 to the second microcomputer 51b.
  • the first transmitting unit 53a and the second receiving unit 54b are connected by a communication line.
  • the second microcomputer 51b When the notification signal Sg1 by the logic H is input, the second microcomputer 51b performs the regeneration determination process in order to control the execution of the three-phase short-circuit control of the first control circuit 50a as the "communication target".
  • the regeneration determination process in the first inverter 15a and the first rotary electric machine 11a provided with the first control circuit 50a, power regeneration in which a current flows from the first rotary electric machine 11a side to the smoothing capacitor 24 side is generated. This is a process in which the second microcomputer 51b determines whether or not it is.
  • the regeneration determination process includes a process of estimating the line voltage Beamf of the first winding 13a based on the regeneration determination information Nr input to the second microcomputer 51b.
  • the regeneration determination information Nr is the rotation speed of the first rotary electric machine 11a.
  • the first microcomputer 51a acquires the regeneration determination information Nr, which is the rotation speed of the first rotary electric machine 11a, and transmits the regenerative determination information Nr to the second microcomputer 51b via the first transmission unit 53a and the second reception unit 54b.
  • the line voltage Vemf in is estimated.
  • K is a constant and is a value determined from the magnetic flux amount ⁇ of the magnetic poles of the rotors 12a and 12b.
  • the first transmission unit 53a corresponds to the "information transmission unit”.
  • the second microcomputer 51b determines that power regeneration occurs when the line voltage Vemf generated in the estimated first winding 13a is higher than the detection voltage VH of the second voltage detection unit 64b. In this case, the second microcomputer 51b outputs the control signal Sg2 of the logic H to the second transmission unit 53b. On the other hand, the second microcomputer 51b determines that power regeneration does not occur when the line voltage Vemf generated in the estimated first winding 13a is equal to or less than the detection voltage VH of the second voltage detection unit 64b. In this case, the second microcomputer 51b outputs the control signal Sg2 of the logic L to the second transmission unit 53b.
  • control signal Sg2 indicates a switching command for executing the three-phase short-circuit control by the logic H, and indicates a switching command for executing the shutdown control by the logic L.
  • the second microcomputer 51b corresponds to the "signal generation unit” and the "regeneration determination unit”.
  • the second transmission unit 53b transmits the input control signal Sg2 to the first reception unit 54a.
  • the first receiving unit 54a outputs the received control signal Sg2 to the third transmitting unit 62a.
  • the third transmission unit 62a outputs the input control signal Sg2 to the first driver 70a.
  • the first receiving unit 54a and the second transmitting unit 53b are connected by a communication line.
  • the first driver 70a When the first driver 70a receives the control signal Sg2 by the logic H, the three-phase short-circuit control is performed, and when the control signal Sg2 by the logic L is received, the shutdown control is performed. As a result, when an abnormality that the execution of the three-phase short-circuit control cannot be controlled occurs in the first control circuit 50a, the three-phase short-circuit control and the shutdown control are switched based on the control signal Sg2 output from the second microcomputer 51b. Be done.
  • the first driver 70a corresponds to the "abnormality control unit".
  • the second microcomputer 51b releases the three-phase short-circuit control or the shutdown control of the first control circuit 50a.
  • the release process is a process of stopping the output of the control signal Sg2.
  • the second transmission unit 53b stops the transmission of the control signal Sg2
  • the first reception unit 54a stops the reception of the control signal Sg2
  • the first driver 70a uses the control signal Sg2 for three-phase short-circuit control or Execution of shutdown control is stopped.
  • the execution of the normal drive control is restarted, for example, based on the switching command from the first microcomputer 51a.
  • FIG. 4 shows the procedure of the processing performed by the control system. This process is repeatedly executed at a predetermined cycle.
  • step S10 the second microcomputer 51b determines whether or not the logic of the notification signal Sg1 is H. If a negative determination is made in step S10, the process proceeds to step S11.
  • step S11 the second microcomputer 51b determines whether or not the logic of the flag F is H.
  • the flag F is a signal that is considered to be logic H when the first driver 70a performs three-phase short-circuit control or shutdown control based on the control signal Sg2 in the previous control cycle, and is a signal of the first driver 70a. Is a signal that is considered to be the logic L when the normal drive control is performed. If a negative determination is made in step S11, the second microcomputer 51b has an abnormality in which the execution of the three-phase short-circuit control cannot be controlled in the first control circuit 50a from the previous control cycle to the current control cycle. It is determined that this is not the case, and the process proceeds to step S12.
  • step S12 the first driver 70a executes normal drive control based on the switching command of the first microcomputer 51a, and the second driver 70b performs normal drive control based on the switching command of the second microcomputer 51b. do.
  • step S13 the second microcomputer 51b sets the logic of the flag F to L.
  • step S10 If an affirmative determination is made in step S10, the process proceeds to step S14, and the second microcomputer 51b performs the regeneration determination process.
  • step S14 the second microcomputer 51b acquires the regeneration determination information Nr, which is the rotation speed of the first rotary electric machine 11a.
  • step S15 the second microcomputer 51b estimates the line voltage Vemf of the first winding 13a based on the regeneration determination information Nr.
  • step S16 the second microcomputer 51b determines whether or not the estimated line voltage Beamf is higher than the detection voltage VH of the second voltage detection unit 64b.
  • the regeneration determination process is from step S14 to step S16.
  • step S16 the second microcomputer 51b determines that power regeneration is occurring in the first inverter 15a and the first rotary electric machine 11a, and proceeds to step S17.
  • step S17 the second microcomputer 51b outputs the control signal Sg2 by the logic H to the second transmission unit 53b.
  • the second transmission unit 53b transmits the input control signal Sg2 by the logic H to the first reception unit 54a.
  • step S19 the first receiving unit 54a receives the control signal Sg2 by the logic H and transmits it to the first driver 70a via the third transmitting unit 62a.
  • step S20 the first driver 70a performs three-phase short-circuit control based on the control signal Sg2 by the logic H.
  • the second driver 70b of the second control circuit 50b in which no abnormality has occurred performs normal drive control based on the switching command of the second microcomputer 51b.
  • step S21 the second microcomputer 51b sets the logic of the flag F to H.
  • step S16 the second microcomputer 51b determines that power regeneration does not occur in the first inverter 15a and the first rotary electric machine 11a, and proceeds to step S22.
  • step S22 the second microcomputer 51b outputs the control signal Sg2 by the logic L to the second transmission unit 53b.
  • the second transmission unit 53b transmits the input control signal Sg2 by the logic L to the first reception unit 54a.
  • step S24 the first receiving unit 54a receives the control signal Sg2 by the logic L and transmits it to the first driver 70a via the third transmitting unit 62a.
  • step S25 the first driver 70a executes shutdown control based on the control signal Sg2 by the logic L.
  • the second driver 70b of the second control circuit 50b in which no abnormality has occurred performs normal drive control based on the switching command of the second microcomputer 51b. After that, the process proceeds to step S21.
  • step S10 If a negative determination is made in step S10 and an affirmative determination is made in step S11, the second microcomputer 51b has a three-phase short-circuit control or shutdown control based on the control signal Sg2 by the first driver 70a in the previous control cycle. It is determined that the above was carried out, and the process proceeds to step S26.
  • step S26 the second microcomputer 51b performs a release process. As a result, the second microcomputer 51b stops the output of the control signal Sg2.
  • step S27 the first driver 70a cancels the execution of the three-phase short-circuit control or the shutdown control based on the control signal Sg2. Then, the process proceeds to step S12.
  • the three-phase short-circuit control or the shutdown control is executed based on the control signal Sg2 of the second microcomputer 51b. After that, when the abnormal state in which the execution of the three-phase short-circuit control cannot be controlled is resolved, the release process is executed in the second microcomputer 51b, and the execution of the three-phase short-circuit control or the shutdown control is canceled. As a result, even if an abnormality occurs in which the execution of the three-phase short-circuit control cannot be controlled in the first control circuit 50a, the three-phase short-circuit control, the shutdown control, or the normal drive control is determined by the determination of the second microcomputer 51b. Any one can be properly implemented.
  • the regenerative determination process for the first control circuit 50a is executed in the second microcomputer 51b.
  • the regeneration determination process that power regeneration occurs three-phase short-circuit control is performed.
  • the regeneration determination process that power regeneration does not occur shutdown control is performed.
  • the implementation of the three-phase short circuit control can be appropriately controlled.
  • the regeneration determination information Nr used for estimating the line voltage Beam of the first winding 13a is transmitted from the first microcomputer 51a to the second microcomputer 51b via the first transmission unit 53a and the second reception unit 54b.
  • the second microcomputer 51b can estimate the line voltage Vemf of the first winding 13a.
  • the first and second transmission units 53a and 53b and the first and second reception units 54a and 54b are provided in the low voltage region.
  • the communication between the first and second control circuits 50a and 50b is performed in the low voltage region. Therefore, it is possible to suppress the increase in size of the device as compared with the case where communication is performed in the high voltage region where it is necessary to electrically insulate between the first and second control circuits 50a and 50b, and by extension, the power converter.
  • the manufacturing cost of the control circuit can be suppressed.
  • the third insulated power supply 63a is provided independently of the first insulated power supply 60a, and the fourth insulated power supply 63b is provided independently of the second insulated power supply 60b.
  • the vehicle 10 even when the three-phase short-circuit control is performed in the first control circuit 50a, the vehicle 10 continues to run by performing the normal drive control in the second control circuit 50b. ..
  • the three-phase short-circuit control continues to be carried out, and a large circulating current flows through the closed circuit including the lower arm switch SWL of the first winding 13a and the first switching device unit 20a.
  • the switching device unit 20a may fail. In this case, the traveling of the vehicle 10 by the second control circuit 50b may be hindered.
  • the execution of the three-phase short-circuit control is controlled via the second microcomputer 51b. To. As a result, it is possible to prevent the three-phase short-circuit control from being continuously performed. As a result, the normal running of the vehicle 10 by the second control circuit 50b can be continued.
  • the second microcomputer 51b acquires the detection temperature Ts of the temperature sensor 41 provided in the first switching device unit 20a via the first microcomputer 51a, the first transmission unit 53a, and the second reception unit 54b. do.
  • the second microcomputer 51b determines that a temperature abnormality has occurred.
  • the second microcomputer 51b determines that no temperature abnormality has occurred.
  • the second microcomputer 51b corresponds to the "temperature acquisition unit".
  • FIG. 5 shows the procedure of the processing performed by the control system. This process is repeatedly executed at a predetermined cycle.
  • the steps shown in FIG. 4 above are designated by the same reference numerals for convenience.
  • step S28 when the acquired detection temperature Ts is higher than the predetermined temperature Tp, the second microcomputer 51b determines that it is in an overheated state, and proceeds to step S22. On the other hand, when the acquired detection temperature Ts is equal to or lower than the predetermined temperature Tp, the second microcomputer 51b determines that it is not in an overheated state, and proceeds to step S17.
  • the logic of the control signal Sg2 is L even if it is determined by the regeneration determination process that power regeneration is occurring.
  • shutdown control is performed in the first control circuit 50a.
  • the voltage applied to the closed circuit in the shutdown control is lower than the voltage applied to the closed circuit in the three-phase short circuit control. Therefore, the regenerative current generated by performing the shutdown control is smaller than the circulating current generated by performing the three-phase short-circuit control. Therefore, by executing the shutdown control in the superheated state, it is possible to prevent the first inverter 15a from becoming an overheated abnormal state.
  • the second microcomputer 51b performs the control for reducing the line voltage Beamf of the first winding 13a.
  • the control for reducing the line voltage Beamf for example, the rotation speed of the second rotary electric machine 11b may be reduced, or the torque command value input to the second control circuit 50b may be reduced.
  • FIG. 6 shows the procedure of the processing performed by the control system. This process is repeatedly executed at a predetermined cycle.
  • the steps shown in FIG. 4 above are designated by the same reference numerals for convenience.
  • step S29 which is after step S20, the second microcomputer 51b performs the reduction process.
  • the line voltage Vemf of the first winding 13a is made lower than the detection voltage VH of the second voltage detection unit 64b. Therefore, in the second control circuit 50b, it is permissible to cancel the three-phase short-circuit control and switch to the execution of the shutdown control. After that, the process proceeds to step S22.
  • the reduction process is implemented.
  • the line voltage Vemf of the first winding 13a is made lower than the detection voltage VH of the second voltage detection unit 64b. Therefore, after the power regeneration does not occur in the first inverter 15a and the first rotary electric machine 11a, the three-phase short-circuit control is canceled and the shutdown control is switched to. As a result, it is possible to switch to the execution of the shutdown control after the problem does not occur even if the three-phase short-circuit control is canceled. As a result, the implementation of the three-phase short circuit control can be appropriately controlled.
  • control signal Sg2 is a voltage signal that can change continuously within a predetermined voltage range instead of being a binary signal of the logic H and the logic L, and is based on this voltage signal.
  • the execution of the three-phase short-circuit control or the shutdown control and the occurrence of an abnormality in the communication line are identified and notified.
  • the voltage signal VSg2 of the control signal Sg2 received by the second receiving unit 54b will be described with reference to FIG. 7.
  • the possible voltage range of the voltage signal VSg2 is a voltage range from 0V to 5V for convenience. Within the voltage range that the voltage signal VSg2 can take, the first to third voltage thresholds V1 to V3 are set.
  • the voltage signal VSg2 when the voltage signal VSg2 is set to be less than the first voltage threshold value V1, it is notified that a ground fault has occurred in the communication line connecting the first transmission unit 53a and the second reception unit 54b.
  • the voltage signal VSg2 is set to be equal to or higher than the first voltage threshold value V1 and lower than the second voltage threshold value V2
  • a switching command for executing shutdown control is notified.
  • the voltage signal VSg2 is set to be equal to or higher than the second voltage threshold value V2 and lower than the third voltage threshold value V3
  • a switching command for performing the three-phase short circuit control is notified.
  • the voltage signal VSg2 is set to the third voltage threshold value V3 or higher, it is notified that a ceiling fault has occurred in the communication line connecting the first transmission unit 53a and the second reception unit 54b.
  • the communication line may be disconnected, but in this case, the voltage signal VSg2 is set to be less than the first voltage threshold value V1 or set to be equal to or higher than the third voltage threshold value V3.
  • the voltage signal VSg2 is set to be equal to or higher than the second voltage threshold value V2 and less than the third voltage threshold value V3 in order to perform three-phase short-circuit control. 2 Output to the transmitter 53b.
  • the voltage signal VSg2 is set to be equal to or higher than the first voltage threshold value V1 and less than the second voltage threshold value V2 in order to perform shutdown control. Output to the second transmission unit 53b.
  • Abnormalities such as ground faults, heavenly faults and disconnections may occur in the communication line connecting the first transmitting unit 53a and the second receiving unit 54b. In this case, it may not be possible to properly control the implementation of the three-phase short circuit control.
  • control signal Sg2 is a voltage signal VSg2 in which a plurality of threshold values are set. Therefore, the execution of the three-phase short circuit control or the shutdown control and the occurrence of the abnormality of the communication line can be discriminated and transmitted. Thereby, the implementation of the three-phase short circuit control can be appropriately controlled.
  • the voltage signal VSg2 sticks to the lower limit value or the upper limit value.
  • the first voltage threshold value V1 is set above 0V
  • the third voltage threshold value V3 is set below 5V.
  • the voltage signal VSg2 is controlled to an intermediate voltage that is equal to or higher than the first voltage threshold value V1 and lower than the third voltage threshold value V3, communication between the first transmission unit 53a and the second reception unit 54b is normally performed. It can be determined that the voltage is low.
  • a process for determining whether or not the three-phase short-circuit control can be normally executed is performed in case of an abnormality in which the execution of the three-phase short-circuit control cannot be controlled occurs. That is, the process of determining whether or not the upper arm switch SWH is turned off and the lower arm switch SWL is turned on is executed by the control signal Sg2 of the logic H.
  • the first control circuit 50a includes a first processing unit 71a.
  • the first processing unit 71a carries out a confirmation process for grasping the drive state of each switch SWH and SWL of the first switching device unit 20a.
  • the first processing unit 71a determines that the three-phase lower arm switch SWL is turned on and the three-phase upper arm switch SWH is turned off
  • the first processing unit 71a generates a logic H determination signal Sgj as a result of the confirmation process. 1 Output to the transmission unit 61a.
  • the determination signal Sgj indicates that the three-phase short-circuit control was executed by the logic H, and indicates that the three-phase short-circuit control was not executed by the logic L.
  • the second control circuit 50b includes a second processing unit 71b.
  • the second processing unit 71b carries out a confirmation process for grasping the drive state of each switch SWH and SWL of the second switching device unit 20b.
  • the second processing unit 71b generates a logic H determination signal Sgj as a result of the confirmation process. 2 Output to the transmission unit 61b.
  • FIG. 9 shows the procedure of the processing performed by the control system. It should be noted that this process may be performed once per trip, or may be performed each time the mileage of the vehicle 10 reaches a predetermined distance. Further, this process may be executed at the timing when the control system is started or stopped. Hereinafter, the process of determining whether or not the three-phase short-circuit control can be normally performed in the first control circuit 50a will be described.
  • step S30 the second microcomputer 51b outputs the control signal Sg2 by the logic H to the second transmission unit 53b.
  • the second transmission unit 53b transmits the control signal Sg2 to the first reception unit 54a.
  • the first receiving unit 54a receives the control signal Sg2 by the logic H and transmits it to the first driver 70a via the third transmitting unit 62a.
  • step S33 the first driver 70a performs three-phase short-circuit control based on the control signal Sg2 by the logic H.
  • step S34 the first processing unit 71a carries out a confirmation process.
  • step S35 the first processing unit 71a generates a determination signal Sgj as a result of the confirmation processing and outputs it to the first transmission unit 53a.
  • step S36 the first transmission unit 53a transmits the determination signal Sgj to the second reception unit 54b.
  • step S37 the second receiving unit 54b receives the determination signal Sgj and outputs it to the second microcomputer 51b.
  • step S38 the second microcomputer 51b determines whether or not the logic of the input determination signal Sgj is H. If the affirmative determination is made in step S38, the second microcomputer 51b proceeds to step S39 and determines that the three-phase short-circuit control can be normally executed. On the other hand, if the negative determination is made in step S38, the second microcomputer 51b proceeds to step S40 and determines that the three-phase short-circuit control cannot be normally executed. In the present embodiment, the second microcomputer 51b corresponds to the "drive determination unit".
  • the first microcomputer 51a outputs the control signal Sg2 by the logic H to the first transmission unit 53a, the same control as described above is performed.
  • the first microcomputer 51a corresponds to the "drive determination unit".
  • the rotation speed of the second rotary electric machine 11b corresponding to the above may be used. Therefore, the second microcomputer 51b estimates the line voltage Beamf of the first winding 13a based on the regeneration determination information Nr which is the rotation speed of the second rotary electric machine 11b.
  • the second microcomputer 51b may acquire the regeneration determination information Nr, which is the rotation speed of the second rotary electric machine 11b.
  • the rotation speed of the second rotary electric machine 11b corresponds to the "control state".
  • the line voltage Beamf of the first winding 13a is estimated based on the rotation speed of the second rotary electric machine 11b.
  • the regeneration determination process can be performed even in a state where the rotation speed of the first rotary electric machine 11a cannot be acquired.
  • the implementation of the three-phase short circuit control can be appropriately controlled.
  • the first winding 13a is based on the gear ratio of the transmission in addition to the rotation speed of the second rotary electric machine 11b.
  • the line voltage Beam of the above may be estimated.
  • the regeneration determination information Nr is not limited to the rotation speed of the rotary electric machine, but may be a phase current Ir or torque.
  • the phase current Ir and torque are set to be predetermined distribution ratios in the first control circuit 50a and the second control circuit 50b. Therefore, for example, the line voltage Vemf of the first winding 13a may be estimated based on the phase current Ir and the distribution ratio detected by the current sensor 40 in the second control circuit 50b. In this embodiment, the phase current Ir and torque correspond to the "controlled state".
  • the value to be compared with the line voltage Vemf is not limited to the detection voltage VH of the second voltage detection unit 64b, and may be, for example, a predetermined determination value.
  • the determination value may be set to, for example, the minimum value within the range that the terminal voltage of a normal high-voltage power supply can take.
  • the control signal Sg2 is a voltage signal VSg2, but in the present embodiment, the control signal Sg2 is a pulse signal.
  • the information is notified as follows based on the control signal Sg2.
  • the duty ratio of the pulse signal is 0%, it is notified that a ground fault has occurred in the communication line.
  • a predetermined duty for example, 50%
  • a switching command for executing shutdown control is notified.
  • the duty ratio of the pulse signal is equal to or more than a predetermined duty and less than 100%
  • a switching command for performing three-phase short-circuit control is notified.
  • the duty ratio of the pulse signal is 100%, it is notified that a ceiling fault has occurred in the communication line.
  • the number of pulses of the pulse signal included in a predetermined time may be made variable.
  • the information is notified as follows based on the control signal Sg2.
  • the number of pulses of the pulse signal is 0, it is notified that a ground fault has occurred in the communication line.
  • the number of pulses of the pulse signal is 1, a switching command for executing shutdown control is notified.
  • the number of pulses of the pulse signal is 2, a switching command for performing the three-phase short-circuit control is notified.
  • the number of pulses of the pulse signal is 3, it is notified that a heavenly fault has occurred in the communication line.
  • the inverter provided in the control system and the rotary electric machine are not limited to two, and may be three or more. In this case, a control circuit may be individually provided for each of the three or more inverters.
  • the control system is not limited to the one equipped with a rotary electric machine corresponding to the front wheels and the rear wheels of the vehicle 10, for example, the control system is installed in a system equipped with a rotary electric machine corresponding to the left drive wheel and the right drive wheel of the vehicle 10. May be done.
  • the rotary electric machine is not limited to the one provided on the vehicle body of the vehicle, and may be, for example, an in-wheel motor built in the drive wheel.
  • the control amount of the rotary electric machine is not limited to the torque, but may be, for example, the rotation speed of the rotor of the rotary electric machine.
  • the rotary electric machine is not limited to the permanent magnet synchronous machine, but may be, for example, a winding field type synchronous machine. Further, the rotary electric machine is not limited to the synchronous machine, and may be, for example, an induction machine. Further, the rotary electric machine is not limited to the one used as an in-vehicle main engine, but may be used for other purposes such as an electric power steering device and an electric motor constituting an electric compressor for air conditioning.
  • the same control as described in the first to fourth embodiments is performed by the first and second control circuits 50a and 50b. Control is enforced.
  • the first microcomputer 51a corresponds to the "signal generation unit” and the "regeneration determination unit”
  • the second microcomputer 51b corresponds to the "temperature acquisition unit”
  • the second transmission unit 53b corresponds to the "information transmission unit”.
  • the second driver 70b corresponds to the "abnormality control unit".
  • the moving body on which the control system is mounted is not limited to the vehicle 10, and may be, for example, an aircraft or a ship.
  • the rotating electric machine becomes the flight power source of the aircraft
  • the rotating electric machine becomes the navigation force source of the ship.
  • the mounting destination of the control system is not limited to the moving body.
  • the switch constituting the first and second switching device units 20a and 20b is not limited to the IGBT, and may be, for example, an N-channel MOSFET having a built-in body diode.
  • the switch of each arm of each phase constituting the first and second switching device units 20a and 20b may be two or more switches connected in parallel to each other.
  • the combination of switches connected in parallel to each other may be, for example, a combination of a SiC switching element and a Si switching element, or a combination of an IGBT and a MOSFET.
  • the controls and methods thereof described in the present disclosure are provided by a dedicated computer provided by configuring a processor and memory programmed to perform one or more functions embodied by a computer program. It may be realized. Alternatively, the controls and methods thereof described in the present disclosure may be implemented by a dedicated computer provided by configuring the processor with one or more dedicated hardware logic circuits. Alternatively, the control unit and method thereof described in the present disclosure may be a combination of a processor and memory programmed to perform one or more functions and a processor configured by one or more hardware logic circuits. It may be realized by one or more dedicated computers configured. Further, the computer program may be stored in a computer-readable non-transitional tangible recording medium as an instruction executed by the computer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Inverter Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

Dispositif de commande appliqué à un système comprenant une pluralité de machines électriques rotatives (11a, 11b) et des convertisseurs de puissance (15a, 15b) ayant des commutateurs (SWH, SWL) pour des bras supérieur et inférieur. Le dispositif de commande comprend des circuits de commande (50a, 50b) prévus individuellement pour les convertisseurs de puissance. Les circuits de commande comprennent : des unités de génération de signal (51a, 51b) qui, pour une cible de communication qui est un circuit de commande autre que le circuit de commande associé, génèrent des signaux de commande pour une commande de court-circuit qui active le commutateur sur l'un des bras supérieur et inférieur et éteint le commutateur sur l'autre bras ; des unités d'émission de signal (53a, 53b) qui envoient des signaux de commande ; des unités de réception de signal (54a, 54b) qui reçoivent des signaux de commande ; et des unités de commande d'anomalie (70a, 70b) qui exécutent chacune une commande de court-circuit lorsqu'un signal de commande indiquant qu'une commande de court-circuit doit être exécutée est reçu par l'intermédiaire de l'unité de réception, et chaque annulation de l'exécution d'une commande de court-circuit lorsqu'un signal de commande indiquant qu'une commande de court-circuit ne doit pas être exécutée est reçu par l'intermédiaire de l'unité de réception.
PCT/JP2021/032841 2020-09-15 2021-09-07 Dispositif de commande de convertisseur de puissance WO2022059559A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014135827A (ja) * 2013-01-09 2014-07-24 Aisin Aw Co Ltd 回転電機制御装置
WO2017217036A1 (fr) * 2016-06-15 2017-12-21 三菱電機株式会社 Dispositif de commande de moteur électrique
JP2020096483A (ja) * 2018-12-14 2020-06-18 本田技研工業株式会社 車両の電源システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014135827A (ja) * 2013-01-09 2014-07-24 Aisin Aw Co Ltd 回転電機制御装置
WO2017217036A1 (fr) * 2016-06-15 2017-12-21 三菱電機株式会社 Dispositif de commande de moteur électrique
JP2020096483A (ja) * 2018-12-14 2020-06-18 本田技研工業株式会社 車両の電源システム

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