WO2024009686A1 - 電力変換器の制御装置、プログラム - Google Patents

電力変換器の制御装置、プログラム Download PDF

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Publication number
WO2024009686A1
WO2024009686A1 PCT/JP2023/021479 JP2023021479W WO2024009686A1 WO 2024009686 A1 WO2024009686 A1 WO 2024009686A1 JP 2023021479 W JP2023021479 W JP 2023021479W WO 2024009686 A1 WO2024009686 A1 WO 2024009686A1
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WO
WIPO (PCT)
Prior art keywords
inverter
control device
power
armature
power converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/021479
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English (en)
French (fr)
Japanese (ja)
Inventor
瞭弥 橋爪
俊一 久保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Soken Inc
Original Assignee
Denso Corp
Soken Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp, Soken Inc filed Critical Denso Corp
Priority to CN202380051692.XA priority Critical patent/CN119631295A/zh
Priority to EP23835222.3A priority patent/EP4554083A4/en
Priority to JP2024531968A priority patent/JP7839879B2/ja
Publication of WO2024009686A1 publication Critical patent/WO2024009686A1/ja
Priority to US19/007,873 priority patent/US20250167705A1/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
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/62—Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/22—Current control, e.g. using a current control loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric 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
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
    • B60L9/18—Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/05—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/03—Synchronous motors with brushless excitation
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/22—Multiple windings; Windings for more than three phases
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
    • 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
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
    • H02P5/747—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors mechanically coupled by gearing
    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/32—Arrangements for controlling wound field motors, e.g. motors with exciter coils
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/429—Current
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature

Definitions

  • the present disclosure relates to a power converter control device and a program.
  • Patent Document 1 Conventionally, as described in Patent Document 1, it has been applied to a vehicle including a battery, an inverter electrically connected to the battery, and a rotating electric machine having an armature winding electrically connected to the inverter.
  • a control device is known. This control device performs switching control of the inverter while the vehicle is stopped, thereby causing the d-axis current to flow through the armature winding while setting the q-axis current flowing through the armature winding to 0.
  • the temperature of the battery is raised while the rotation of the rotor of the rotating electric machine is maintained in a stopped state.
  • the main objective of the present disclosure is to provide a power converter control device and program that can rapidly raise the temperature of a temperature-raising target while maintaining the rotation stop state of the rotor of a rotating electric machine.
  • the present disclosure includes a power storage unit, a plurality of power converters electrically connected to the power storage unit; a rotating electric machine having a winding electrically connected to each of the power converters; a heat transfer unit that transfers heat generated in at least one of the power converters to an object to be heated;
  • a power converter control device applied to a system comprising: a determination unit that determines whether or not there is a request to increase the temperature of the temperature increase target; When the determination unit determines that there is a temperature increase request, each power converter is configured to flow AC d- and q-axis currents through the windings while maintaining the rotor of the rotating electrical machine in a stopped state.
  • a control unit that performs switching control.
  • the present disclosure by flowing the q-axis current in addition to the d-axis current, it is possible to increase the amount of heat generated by switching control. Therefore, by transmitting the heat generated by the switching control to the object to be heated through the heat transfer section, the object to be heated can be quickly heated. At this time, the state in which the rotor is stopped can be maintained.
  • FIG. 1 is an overall configuration diagram of an in-vehicle system according to a first embodiment
  • FIG. 2 is a diagram showing an overview of a cooling system as a heat transfer unit
  • FIG. 3 is a diagram showing changes in three-phase alternating current, d- and q-axis currents, field current, and torque in temperature increase control
  • FIG. 4 is a diagram showing a current vector during temperature increase control in the dq coordinate system
  • FIG. 5 is a diagram showing changes in three-phase alternating current, d- and q-axis currents, field current, and torque in temperature increase control according to a comparative example
  • FIG. 1 is an overall configuration diagram of an in-vehicle system according to a first embodiment
  • FIG. 2 is a diagram showing an overview of a cooling system as a heat transfer unit
  • FIG. 3 is a diagram showing changes in three-phase alternating current, d- and q-axis currents, field current, and torque in temperature increase control
  • FIG. 4 is a
  • FIG. 6 is a flowchart showing the processing procedure of temperature increase control
  • FIG. 7 is a diagram showing a current vector during temperature increase control in a dq coordinate system according to a modification of the first embodiment
  • FIG. 8 is a diagram showing a current vector during temperature increase control in a dq coordinate system according to a modification of the first embodiment
  • FIG. 9 is a diagram showing a current vector during temperature increase control in a dq coordinate system according to a modification of the first embodiment
  • FIG. 10 is a diagram showing a current vector during temperature increase control in a dq coordinate system according to a modification of the first embodiment
  • FIG. 11 is a diagram showing a current flowing during temperature increase control according to a modification of the first embodiment
  • FIG. 11 is a diagram showing a current flowing during temperature increase control according to a modification of the first embodiment
  • FIG. 12 is a diagram showing the transition of current during temperature increase control according to the second embodiment
  • FIG. 13 is a diagram showing the transition of current during temperature increase control according to the third embodiment
  • FIG. 14 is an overall configuration diagram of an in-vehicle system according to a fourth embodiment
  • FIG. 15 is a diagram showing a current vector during temperature increase control in the dq coordinate system
  • FIG. 16 is a diagram showing a current vector during temperature increase control in a dq coordinate system according to a modification of the fourth embodiment
  • FIG. 17 is an overall configuration diagram of an in-vehicle system according to a fifth embodiment.
  • a system including the control device of this embodiment is installed in a vehicle such as an electric vehicle or a hybrid vehicle.
  • the system includes a storage battery 10 (corresponding to a "power storage unit"), two power converters, and a rotating electric machine 30.
  • the rotating electrical machine 30 is a wound field type rotating electrical machine.
  • the rotating electrical machine 30 has reverse saliency, which is a characteristic in which the q-axis inductance Lq is larger than the d-axis inductance Ld.
  • the storage battery 10 is an assembled battery configured as a series connection of battery cells that are single batteries.
  • the battery cell is, for example, a secondary battery such as a lithium ion battery.
  • the storage battery 10 can be charged using an external charger provided outside the vehicle.
  • the external charger is, for example, a stationary charger.
  • the rotating electric machine 30 includes a rotor 31.
  • the rotor 31 includes a field winding 32 .
  • the rotating shaft of the rotor 31 is capable of transmitting power to the drive wheels 12 of the vehicle via a power transmission mechanism 11 provided in the vehicle. Torque generated by the rotating electric machine 30 functioning as an electric motor is transmitted to the drive wheels 12 via the power transmission mechanism 11, and the drive wheels 12 rotate.
  • the power transmission mechanism 11 includes, for example, a transmission and a shaft.
  • the rotating electric machine 30 may be, for example, an in-wheel motor provided integrally with the drive wheels 12 of the vehicle, or may be an on-board motor provided in the body of the vehicle.
  • the rotating electric machine 30 includes a stator 33.
  • the stator 33 includes, as armature windings, U, V, and W phase windings 34U, 34V, and 34W connected in a star shape and deviated from each other by 120 degrees in electrical angle.
  • the system includes an inverter 20 (corresponding to a "first inverter”) and a field energization circuit 40 (corresponding to a “second inverter”) as power converters.
  • the inverter 20 converts the direct current from the storage battery 10 into alternating current and supplies the alternating current to the armature winding.
  • the inverter 20 includes a series connection body of U, V, W phase upper arm switches SUH, SVH, SWH and U, V, W phase lower arm switches SUL, SVL, SWL.
  • each switch SUH, SVH, SWH, SUL, SVL, SWL is an N-channel MOSFET.
  • Each switch SUH, SVH, SWH, SUL, SVL, SWL includes a body diode DUH, DVH, DWH, DUL, DVL, DWL.
  • the positive terminal of the storage battery 10 is connected to the drains, which are the high potential side terminals of the U, V, and W phase upper arm switches SUH, SVH, and SWH, via the high potential side electrical path Lp.
  • the negative terminal of the storage battery 10 is connected to the sources, which are the low potential side terminals of the U, V, and W phase lower arm switches SUL, SVL, and SWL, via the low potential side electrical path Ln.
  • Each electrical path Lp, Ln is a conductive member such as a bus bar.
  • the inverter 20 includes a first capacitor 21 that is a smoothing capacitor. Note that the first capacitor 21 may be provided outside the inverter 20.
  • the field energizing circuit 40 supplies current from the storage battery 10 to the field winding 32.
  • the field energizing circuit 40 of this embodiment is a full bridge circuit, and includes a series connection body of a first upper arm switch SH1 and a first lower arm switch SL1, and a series connection body of a second upper arm switch SH2 and a second lower arm switch SL2. It is equipped with a series connection body.
  • each switch SH1, SH2, SL1, SL2 is an N-channel MOSFET.
  • Each switch SH1, SH2, SL1, SL2 includes a body diode DH1, DH2, DL1, DL2.
  • Each of the switches SH1, SH2, SL1, and SL2 is a bidirectional conduction type switching element that, when turned on, allows current to flow from the drain to the source and from the source to the drain.
  • the positive terminal of the storage battery 10 is connected to the drains, which are the high potential side terminals of the first and second upper arm switches SH1 and SH2, via the high potential side electrical path Lp.
  • the negative terminal of the storage battery 10 is connected to the sources, which are the low potential side terminals of the first and second lower arm switches SL1 and SL2, via the low potential side electrical path Ln.
  • a first end of the field winding 32 is connected to a connection point between the first upper arm switch SH1 and the first lower arm switch SL1 via a brush (not shown).
  • a second end of the field winding 32 is connected to a connection point between the second upper arm switch SH2 and the second lower arm switch SL2 via a brush (not shown).
  • the field energizing circuit 40 includes a second capacitor 41 that is a smoothing capacitor.
  • the second capacitor 41 may be provided outside the field energizing circuit 40.
  • a common capacitor is provided in the inverter 20 and the field energizing circuit 40. It may be a configuration. In this case, for example, a configuration may be adopted in which the second capacitor 41 is not provided.
  • the system includes a device that cools the inverter 20, the field energizing circuit 40, the rotating electric machine 30, and the storage battery 10 when switching control of the inverter 20 is performed to run the vehicle.
  • the vehicle includes a circulation path 400 through which cooling water circulates, an electric water pump 401, a radiator 402, and an electric fan 403.
  • the water pump 401 circulates cooling water by being powered and driven.
  • the inverter 20, the field energizing circuit 40, the rotating electrical machine 30, and the storage battery 10 are arranged in this order downstream of the water pump 401. Note that the arrangement order in the circulation route 400 is not limited to the order shown in FIG. 2 .
  • a radiator 402 is provided between the water pump 401 and the storage battery 10 in the circulation path 400.
  • the radiator 402 cools the cooling water flowing in through the circulation path 400 and supplies the cooled water to the water pump 401 .
  • the cooling water flowing into the radiator 402 is cooled by the running wind that is blown onto the radiator 402 as the vehicle travels, and the wind that is blown onto the radiator 402 by driving the fan 403 to rotate.
  • the water pump 401 and the fan 403 may be driven by a control device different from the control device 60. However, in this embodiment, for convenience, it is assumed that the water pump 401 and the fan 403 are driven by the control device 60 included in the system.
  • the system includes a voltage sensor 50, a phase current sensor 51, a field current sensor 52, an angle sensor 53, and a temperature sensor 54.
  • Voltage sensor 50 detects the voltage of storage battery 10.
  • the phase current sensor 51 detects phase current flowing through at least two phase windings among the U, V, and W phase windings 34U, 34V, and 34W.
  • Field current sensor 52 detects field current flowing through field winding 32 .
  • Angle sensor 53 detects the rotation angle (electrical angle) of rotor 31.
  • Temperature sensor 54 detects the temperature of storage battery 10 .
  • the detected values of each sensor 50 to 54 are input to a control device 60.
  • the control device 60 is mainly composed of a microcomputer 61, and the microcomputer 61 includes a CPU.
  • the functions provided by the microcomputer 61 can be provided by software recorded in a physical memory device and a computer that executes it, only software, only hardware, or a combination thereof.
  • the microcomputer 61 is provided by an electronic circuit that is hardware, it can be provided by a digital circuit including a large number of logic circuits or an analog circuit.
  • the microcomputer 61 executes a program stored in a non-transitory tangible storage medium, which serves as a storage unit included in the microcomputer 61 .
  • the program includes, for example, a program for processing shown in FIG. 6, which will be described later.
  • the storage unit is, for example, a nonvolatile memory.
  • the program stored in the storage unit can be updated via a communication network such as the Internet, for example, OTA (Over The Air).
  • the control device 60 performs switching control of each switch that constitutes the field energization circuit 40 in order to excite the field winding 32. Specifically, in order to control the field current If detected by the field current sensor 52 to the target field current Iftgt, the control device 60 performs switching control so that the first state and the second state appear alternately. conduct.
  • the first state is a state in which the first upper arm switch SH1 and the second lower arm switch SL2 are turned on, and the second upper arm switch SH2 and the first lower arm switch SL1 are turned off.
  • the second state is a state in which the first upper arm switch SH1 and the second lower arm switch SL2 are turned off, and the second upper arm switch SH2 and the first lower arm switch SL1 are turned on.
  • the control device 60 configures the inverter 20 to perform feedback control of the control amount of the rotating electric machine 30 to a command value based on the detected values of the sensors 50 to 54 while the field winding 32 is excited. Performs switching control for each switch. In this embodiment, the controlled amount is torque. In each phase, the upper arm switch and lower arm switch are turned on alternately. Through this feedback control, the rotational power of the rotor 31 is transmitted to the drive wheels 12, and the vehicle runs.
  • temperature increase control of the storage battery 10 executed by the control device 60 will be explained.
  • This control is performed by switching the inverter 20 and the field energizing circuit 40 when the temperature of the storage battery 10 detected by the temperature sensor 54 is lower than the target temperature Ttgt when the storage battery 10 is charged by an external charger while the vehicle is stopped.
  • This is a control that generates heat through control.
  • the generated heat is transferred to the storage battery 10 via the cooling water circulating through the circulation path 400 by driving the water pump 401 .
  • the temperature increase control is continued, for example, until the temperature of the storage battery 10 reaches the target temperature Ttgt.
  • the water pump 401 continues to be driven at least while the temperature increase control is being performed.
  • the circulation path 400, the cooling water circulating through the circulation path 400, and the water pump 401 correspond to a "heat transfer section.”
  • the temperature increase control quickly raises the temperature of the storage battery 10 and shortens the charging time of the storage battery 10 using an external charger.
  • the control device 60 performs switching control of the inverter 20 so that d and q axis currents flow through the armature windings in the temperature increase control. At this time, in order to maintain the rotation stop state of the rotor 31 and maintain the stopped state of the vehicle, the control device 60 controls the field so that the reluctance torque generated by the flow of the d- and q-axis currents is reduced by the magnetic torque. Switching control of the energization circuit 40 is performed. The temperature increase control will be explained in detail below.
  • the generated torque Trq of the rotating electric machine 30 is composed of a magnet torque TM and a reluctance torque TR, as expressed by the following formula (eq1).
  • P represents the number of pole pairs of the rotating electric machine 30, and ⁇ f represents the magnetic flux generated by the field current flowing through the field winding.
  • the control device 60 causes sinusoidal three-phase alternating currents IU, IV, and IW whose phases are shifted by 120 degrees in electrical angle to flow through each phase winding 34U to 34W, as shown in FIG. 3(A).
  • the switching control of the inverter 20 is performed as follows. In this case, sinusoidal d- and q-axis currents Id and Iq flow as shown in FIG. 3(B). In this case, the frequencies of the d- and q-axis currents Id and Iq are the same, and the phase difference between the d-axis current Id and the q-axis current Iq is 90 degrees in electrical angle.
  • the magnetic flux ⁇ f is proportional to the multiplication value of the number of turns Nf of the field winding 32 and the field current If, as expressed by the following formula (eq2).
  • the control device 60 If ⁇ -(Lq-Ld) ⁇ Id/Nf...(eq4) In this embodiment, Lq>Ld in (eq4). Therefore, as shown in FIG. 3C, the control device 60 generates a sinusoidal target field that is 180 degrees different from the phase of the d-axis current Id and has the same frequency as the d-axis current Id. Set the current Iftgt. The control device 60 performs switching control of the field energization circuit 40 so that the field current If detected by the field current sensor 52 becomes the target field current Iftgt. Thereby, as shown in FIG. 3(D), the difference between the reluctance torque TR and the magnet torque TM can be made smaller than the torque threshold value Trqth.
  • the torque threshold value Trqth is a torque at which the drive wheels 12 start rotating, and is set, for example, to the upper limit of the range of torque expected to cause the drive wheels 12 to start rotating. According to the temperature increase control described above, it is possible to maintain the rotor 31 in a stopped rotation state, and it is possible to suppress the occurrence of a situation that gives a sense of discomfort to the user of the vehicle. Note that Tf shown in FIG. 3 is one period of the d-axis current Id and the field current If.
  • FIG. 4 is a diagram showing the current flowing during temperature increase control in a dq coordinate system.
  • Ivt_3ph indicates a current vector flowing in the armature winding (hereinafter referred to as armature current vector) in the dq coordinate system
  • Ivt_fld indicates a current vector flowing in the field winding 32 in the dq coordinate system (hereinafter referred to as field current vector). magnetic current vector). Since the rotor 31 has stopped rotating, the armature current vector Ivt_3ph rotates at the frequency of the three-phase alternating current.
  • the control device 60 performs switching control of the inverter 20 and the field energizing circuit 40 so that the phase difference between the rotating armature current vector Ivt and the field current vector Ivt_fld becomes 180 degrees.
  • the field current vector Ivt_fld comes to have a component that reduces the reluctance torque of the rotating electric machine 30, and more specifically, it comes to have a component that brings the reluctance torque closer to zero.
  • FIG. 6 is a flowchart showing the processing procedure of temperature increase control executed by the control device 60. This process is executed, for example, when the control device 60 determines that charging of the storage battery 10 by the external charger has started.
  • step S10 it is determined whether there is a request to raise the temperature of the storage battery 10. In this embodiment, it is determined that there is a temperature increase request when the detected temperature of the storage battery 10 is lower than the target temperature Ttgt. In addition, in this embodiment, the process of step S10 corresponds to a "determination unit".
  • step S10 If it is determined in step S10 that there is a temperature increase request, the process proceeds to step S11, and switching control of the inverter 20 and field energization circuit 40 is performed in order to perform the temperature increase control described above.
  • step S12 it is determined whether the temperature Tobj of the temperature increase target has reached the target temperature Ttgt.
  • the temperature Tobj to be heated is the temperature of the storage battery 10.
  • step S12 If it is determined in step S12 that the temperature of the storage battery 10 is less than the target temperature Ttgt, the switching control in step S11 is continued. On the other hand, when it is determined that the temperature of the storage battery 10 has reached the target temperature Ttgt, the temperature increase control is stopped.
  • the processing of steps S11 and S12 corresponds to a "control unit".
  • the rotation of the fan 403 may be stopped in order to suppress a decrease in the temperature of the cooling water in the circulation path 400.
  • the present embodiment described in detail above it is possible to increase the heat generated in the inverter 20, the field energizing circuit 40, and the rotating electric machine 30 (for example, armature winding).
  • the generated heat is transferred to the storage battery 10 via the circulation path 400.
  • the temperature of the storage battery 10 can be raised quickly, and the charging time of the storage battery 10 by external charging can be shortened.
  • the rotation of the rotor 31 can be maintained in a stopped state, it is possible to prevent the user of the vehicle from feeling uncomfortable during external charging.
  • phase difference ⁇ between the armature current vector Ivt_3ph and the field current vector Ivt_fld during temperature increase control is not limited to 180 degrees, but is as shown in FIG. It may be the angle shown in .
  • the phase difference ⁇ shown in FIG. 7 is positive when the field current vector Ivt_fld advances clockwise with respect to the armature current vector Ivt_3ph.
  • the phase difference ⁇ is set to, for example, 90 degrees ⁇ ⁇ ⁇ 270 degrees, preferably 150 degrees ⁇ ⁇ ⁇ 210 degrees, on the condition that the torque Trq generated by the rotating electric machine 30 is smaller than the torque threshold Trqth. More desirably, the angle may be set to 170 degrees ⁇ 190 degrees.
  • the rotating electric machine 30 may have forward saliency, which is a characteristic in which the d-axis inductance Ld is larger than the q-axis inductance Lq.
  • forward saliency which is a characteristic in which the d-axis inductance Ld is larger than the q-axis inductance Lq.
  • the inverter 20 And the field energizing circuit 40 may be subjected to switching control.
  • phase difference ⁇ in the case of having forward saliency is not limited to 0 degrees, but may be at the angles shown in FIGS. 9 and 10, as long as the field current vector Ivt_fld has a component that reduces the reluctance torque. good.
  • the phase difference ⁇ is set, for example, to -90 degrees ⁇ ⁇ ⁇ 90 degrees, and preferably to -30 degrees ⁇ ⁇ ⁇ 30 degrees, on the condition that the torque Trq generated by the rotating electrical machine 30 is smaller than the torque threshold Trqth. More preferably, it is set to ⁇ 10 degrees ⁇ 10 degrees. Note that FIGS. 9 and 10 show a case where the phase difference ⁇ is negative.
  • the current flowing through each phase winding 34U to 34W and the field winding 32 is not limited to a sinusoidal current, but may include harmonic components as shown in FIGS. 11(A) and (B).
  • the current may be a sinusoidal current, or may be a rectangular current as shown in FIGS. 11(C) and (D).
  • the control device 60 can make the torque threshold value Trqth variable. For example, when the parking brake of the vehicle is activated, the torque threshold Trqth is set larger than when it is not activated.
  • control device 60 may include an acquisition unit that acquires the road surface temperature on which the vehicle travels, and may change the torque threshold value Trqth based on the acquired road surface temperature.
  • map information in which the road surface temperature and the torque threshold value Trqth are associated may be used.
  • the control device 60 may apply braking torque to the wheels of the vehicle using a mechanical brake device provided in the vehicle during execution of the temperature increase control.
  • control device 60 performs switching control of the inverter 20 and the field energization circuit 40 so as to gradually increase the amplitudes of the d- and q-axis currents and the field current during execution of the temperature increase control.
  • FIG. 12 shows an example of temperature increase control in this embodiment.
  • the control device 60 determines that there is a temperature increase request. As a result, the control device 60 starts flowing the d- and q-axis currents Id and Iq to the armature windings, and also controls the inverter 20 and the field energizing circuit 40 to start flowing the field current If to the field winding 32. Starts switching control. After that, the control device 60 performs switching control of the inverter 20 and the field energizing circuit 40 so as to gradually increase the amplitudes of the d- and q-axis currents Id and Iq and the field current If.
  • vibration of the shaft included in the power transmission mechanism 11 can be suppressed at the start of temperature increase control.
  • control device 60 may stop the gradual increase in the amplitude and fix the amplitude to the maximum value.
  • control device 60 performs switching control of the inverter 20 and the field energization circuit 40 so as to gradually increase the frequencies of the d- and q-axis currents and the field current during execution of the temperature increase control.
  • FIG. 13 shows an example of temperature increase control in this embodiment.
  • the control device 60 determines that there is a temperature increase request. As a result, the control device 60 starts flowing the d- and q-axis currents Id and Iq to the armature windings, and also controls the inverter 20 and the field energizing circuit 40 to start flowing the field current If to the field winding 32. Starts switching control. After that, the control device 60 performs switching control of the inverter 20 and the field energizing circuit 40 so as to gradually increase the frequencies of the d- and q-axis currents Id and Iq and the field current If.
  • control device 60 may stop the gradual increase in the frequency and fix the frequency to the maximum value.
  • the system includes a rotating electric machine 90 having two systems of armature windings.
  • the rotating electric machine 90 is a synchronous machine and includes a rotor 91 and a stator 92.
  • the rotor 91 includes permanent magnets as field poles.
  • the rotating shaft of the rotor 91 is capable of transmitting power to the drive wheels 12 via a power transmission mechanism 11 provided in the vehicle.
  • the stator 92 includes a first armature winding 93A and a second armature winding 93B.
  • the first armature winding 93A includes U-, V-, and W-phase windings UA, VA, and WA that are star-connected and deviated from each other by 120 degrees in electrical angle.
  • the second armature winding 93B includes U-, V-, and W-phase windings UB, VB, and WB connected in a star shape and deviated from each other by 120 degrees in electrical angle.
  • the rotor 91 is common to each armature winding 93A, 93B. In this embodiment, it is assumed that the phase difference between the U-phase winding UA of the first armature winding 93A and the U-phase winding UB of the second armature winding 93B is zero.
  • the system includes a first inverter 70 provided individually corresponding to the first armature winding 93A, and a second inverter 80 provided individually corresponding to the second armature winding 93B. .
  • the first inverter 70 includes U, V, W phase upper arm switches SUAH, SVAH, SWAH and U, V, W phase lower arm switches SUAL, SVAL, SWAL connected in series. Equipped with a connecting body.
  • Each switch SUAH, SVAH, SWAH, SUAL, SVAL, SWAL includes a body diode DUAH, DVAH, DWAH, DUAL, DVAL, DWAL.
  • the second inverter 80 includes a series connection body of U, V, W phase upper arm switches SUBH, SVBH, SWBH and U, V, W phase lower arm switches SUBL, SVBL, SWBL.
  • Each switch SUBH, SVBH, SWBH, SUBL, SVBL, SWBL includes a body diode DUBH, DVBH, DWBH, DUBL, DVBL, DWBL.
  • the positive terminal of the storage battery 10 is connected to the drain of each upper arm switch of the first inverter 70 and the second inverter 80 via the high potential side electrical path Lp.
  • a negative terminal of the storage battery 10 is connected to the source of each lower arm switch of the first inverter 70 and the second inverter 80 via a low potential side electrical path Ln.
  • the first inverter 70 includes a first capacitor 71 that is a smoothing capacitor.
  • the second inverter 80 includes a second capacitor 81 that is a smoothing capacitor.
  • the system is equipped with the cooling device shown in FIG. 2 above.
  • a first inverter 70, a second inverter 80, a rotating electric machine 90, and a storage battery 10 are arranged in a circulation path 400 that constitutes a cooling device.
  • the system includes a voltage sensor 50, a phase current sensor 51, an angle sensor 53, and a temperature sensor 54.
  • the phase current sensor 51 is a first current sensor that detects at least two phases' worth of phase current flowing through the first armature winding 93A, and a first current sensor that detects at least two phases' worth of phase current flowing through the second armature winding 93B. a second current sensor.
  • the control device 60 controls each switch constituting the first and second inverters 70 and 80 in order to feedback control the torque of the rotating electric machine 90 to the command torque based on the detected values of the respective sensors 50, 51, 53, and 54. Performs switching control. Through this feedback control, the rotational power of the rotor 91 is transmitted to the drive wheels 12, and the vehicle runs.
  • the control device 60 performs switching control of the first inverter 70 in order to control the torque generated when the first armature winding 93A is energized to the first command torque, and controls the switching of the first inverter 70 to energize the second armature winding 93B.
  • Switching control of the second inverter 80 is performed in order to control the torque generated accordingly to the second command torque.
  • the torque generated by the rotating electrical machine 90 is controlled to the total torque of the first command torque and the second command torque.
  • the first command torque and the second command torque are, for example, the same value.
  • Ivt_A indicates a current vector flowing in the first armature winding 93A in the dq coordinate system (hereinafter referred to as the first armature current vector)
  • Ivt_B indicates a current vector flowing in the second armature winding 93B in the dq coordinate system.
  • a flowing current vector (hereinafter referred to as a second armature current vector) is shown.
  • the control device 60 makes the magnitude of the first armature current vector Ivt_A and the second armature current vector Ivt_B the same, and the phase difference between the first armature current vector Ivt_A and the second armature current vector Ivt_B is 180 degrees.
  • Switching control of the first and second inverters 70 and 80 is performed so that With this control, the second armature current vector Ivt_B also rotates at the same frequency as the first armature current vector Ivt_A, which rotates at the frequency of the three-phase alternating current.
  • the torque generated when the first armature winding 93A is energized can be reduced by the torque generated when the second armature winding 93B is energized.
  • the torque generated when the wire 93A is energized can be brought close to zero. As a result, the torque generated by the rotating electric machine 90 becomes smaller than the torque threshold value Trqth.
  • the d- and q-axis currents flowing in the first armature winding 93A and the d- and q-axis currents flowing in the second armature winding 93B respectively.
  • the amplitude and/or frequency may be gradually increased. In this case, even if an imbalance occurs in the currents flowing through the first and second armature windings 93A and 93B at the start of the temperature increase control, the influence of the imbalance can be suppressed.
  • the phase difference ⁇ between the first armature current vector Ivt_A and the first armature current vector Ivt_B during temperature increase control is such that the second armature current vector Ivt_B is 180 degrees from the phase of the first armature current vector Ivt_A.
  • the angle is not limited to 180 degrees and may be the angle shown in FIG. 16 as long as it has different components.
  • the phase difference ⁇ shown in FIG. 16 is positive when the second armature current vector Ivt_B advances clockwise with respect to the first armature current vector Ivt_A.
  • the phase difference ⁇ is set to, for example, 90 degrees ⁇ ⁇ ⁇ 270 degrees, preferably 150 degrees ⁇ ⁇ ⁇ 210 degrees, on the condition that the torque Trq generated by the rotating electric machine 90 is smaller than the torque threshold Trqth. , and more preferably set to 170 degrees ⁇ 190 degrees.
  • the rotating electrical machine may have M (M is an integer of 3 or more) systems or more of armature windings and inverters.
  • the control device 60 may perform switching control of each inverter so as to shift the phase of the current vector flowing through the armature winding of each system by "360/M" degrees in the dq coordinate system, for example.
  • the system is equipped with two sets of rotating electric machines and inverters.
  • the rotational power of the rotor of each rotating electrical machine is transmitted to the drive wheels 305 of the vehicle via the vehicle's power transmission mechanism.
  • the system includes a first storage battery 100 and a second storage battery 200 (corresponding to a "power storage unit"), a first inverter 110 and a second inverter 210, and a first rotating electrical machine 120 and a second rotating electrical machine 220.
  • each rotating electric machine 120, 220 is a permanent magnet field type synchronous machine, similarly to the fourth embodiment.
  • each of the storage batteries 100 and 200 is an assembled battery, and is, for example, a secondary battery such as a lithium ion battery.
  • Each storage battery 100, 200 can be charged by an external charger provided outside the vehicle.
  • the first rotating electric machine 120 includes a first rotor 121.
  • the second rotating electric machine 220 includes a second rotor 221.
  • the rotating shaft of the first rotor 121 and the rotating shaft of the second rotor 221 are capable of transmitting power to the driving wheels 305 via a power transmitting mechanism.
  • the power transmission mechanism includes a first drive shaft 301, a second drive shaft 302, a counter gear 303, and a shaft 304.
  • the rotation shaft of the first rotor 121 is connected to the counter gear 303 via the first drive shaft 301
  • the rotation shaft of the second rotor 221 is connected to the counter gear 303 via the second drive shaft 302.
  • a drive wheel 305 is connected to the counter gear 303 via a shaft 304.
  • first drive shaft 301, the second drive shaft 302, and the counter gear 303 correspond to a "power transmission section.”
  • the first rotating electric machine 120 includes a first stator 122.
  • the first stator 122 includes, as armature windings, U, V, and W phase windings 123U, 123V, and 123W connected in a star shape and deviated from each other by 120 degrees in electrical angle.
  • the second rotating electrical machine 220 includes a second stator 222.
  • the second stator 222 includes, as armature windings, U-, V-, and W-phase windings 223U, 223V, and 223W connected in a star shape and deviated from each other by 120 degrees in electrical angle.
  • the U, V, and W phase windings 123U, 123V, and 123W are electrically connected to the first storage battery 100 via the first inverter 110.
  • the U, V, and W phase windings 223U, 223V, and 223W are electrically connected to the second storage battery 200 via the second inverter 210.
  • the first inverter 110 has the same configuration as the first inverter 70 of the fourth embodiment, and the second inverter 210 has the same configuration as the second inverter 80 of the fourth embodiment.
  • the first inverter 110 includes a first capacitor 111 that is a smoothing capacitor, and the second inverter 210 includes a second capacitor 211 that is a smoothing capacitor.
  • the system is equipped with the cooling device shown in FIG. 2 above.
  • a first inverter 110, a second inverter 210, a first rotating electrical machine 120, a second rotating electrical machine 220, a first storage battery 100, and a second storage battery 200 are arranged in the circulation path 400 that constitutes the cooling device.
  • the system includes a voltage sensor 50, a phase current sensor 51, an angle sensor 53, and a temperature sensor 54.
  • the phase current sensor 51 includes a first current sensor that detects at least two phases of phase current flowing through the armature winding of the first rotating electrical machine 120 and a first current sensor that detects at least two phases' worth of phase current flowing through the armature winding of the second rotating electrical machine 220. and a second current sensor that detects the phase current of.
  • the angle sensor 53 includes a first angle sensor that detects the rotation angle (electrical angle) of the first rotor 121 and a second angle sensor that detects the rotation angle (electrical angle) of the second rotor 221.
  • Temperature sensor 54 includes a first temperature sensor that detects the temperature of first storage battery 100 and a second temperature sensor that detects the temperature of second storage battery 200.
  • the control device 60 controls switching of each switch constituting the first inverter 110 in order to feedback control the torque of the first rotating electric machine 120 to the first command torque based on the detected values of the sensors 50, 51, 53, and 54. Take control. Furthermore, the control device 60 controls each switch that constitutes the second inverter 210 in order to feedback control the torque of the second rotating electrical machine 220 to the second command torque based on the detected values of the sensors 50, 51, 53, and 54. performs switching control. Through this feedback control, the total rotational power of the first rotor 121 and the second rotor 221 is transmitted to the drive wheels 305, and the vehicle runs.
  • step S10 the control device 60 determines that there is a temperature increase request when the lower temperature of the detected temperatures of the first and second storage batteries 100, 200 is lower than the target temperature Ttgt. do.
  • control device 60 determines in step S12 that the lower of the temperatures of the first and second storage batteries 100 and 200 has reached the target temperature Ttgt, it stops the temperature increase control.
  • the process of step S11 will be explained using FIG. 15.
  • the first armature current vector Ivt_A is the current vector flowing through the armature winding of the first rotating electric machine 120 in the dq coordinate system
  • the second armature current vector Ivt_B is the second vector in the dq coordinate system. Let it be a current vector flowing through the armature winding of the rotating electric machine 220.
  • the control device 60 makes the magnitudes of the first armature current vector Ivt_A and the second armature current vector Ivt_B the same while controlling the magnitude of the first armature current vector Ivt_A and the second armature current vector Ivt_B.
  • Switching control of the first and second inverters 70 and 80 is performed so that the phase difference with Ivt_B is 180 degrees.
  • the second armature current vector Ivt_B also rotates at the same frequency as the first armature current vector Ivt_A, which rotates at the frequency of the three-phase alternating current.
  • the torque generated when the armature winding of the first rotating electric machine 120 is energized can be reduced by the torque generated when the armature winding of the second rotating electric machine 220 is energized.
  • the torque transmitted to the drive wheels 305 becomes smaller than the torque threshold Trqth.
  • the d and q axis currents flowing in the armature windings of the first rotating electrical machine 120 and the d and q axis currents flowing in the armature windings of the second rotating electrical machine 220 At least one of the amplitude and the frequency may be gradually increased for each of the axial currents. In this case, even if an imbalance occurs in the torques generated by the first and second rotating electric machines 120 and 220 at the start of temperature increase control, the vibration and twisting of the drive shafts 301 and 302 can be suppressed while the counter gear 303 The gears can be smoothly engaged.
  • the magnitude of the first armature current vector Ivt_A and the magnitude of the second armature current vector Ivt_B may be different.
  • the phase difference ⁇ between the first armature current vector Ivt_A and the first armature current vector Ivt_B during temperature increase control is such that the second armature current vector Ivt_B is 180 degrees from the phase of the first armature current vector Ivt_A.
  • the angle is not limited to 180 degrees and may be the angle shown in FIG. 16 above.
  • the phase difference ⁇ is set to, for example, 90 degrees ⁇ ⁇ ⁇ 270 degrees on the condition that the torque output from the shaft 304 to the driving wheels 305 is smaller than the torque threshold Trqth. , preferably set to 150 degrees ⁇ 210 degrees, and more preferably set to 170 degrees ⁇ 190 degrees.
  • the number of rotating electric machines and inverters included in the system may be M (M is an integer of 3 or more) or more.
  • the control device 60 performs switching control of each inverter so as to shift the phase of the current vector flowing through the armature winding of each set of rotating electric machines by "360/M" degrees in the dq coordinate system, for example. That's fine.
  • the storage battery electrically connected to the first inverter 110 and the storage battery electrically connected to the second inverter 210 may be a common storage battery.
  • a harmonic component may be included in the phase current as shown in FIG. 11.
  • the rotating electric machine is not limited to one that only includes a field winding as a field pole, but may include a permanent magnet in addition to the field winding.
  • the magnetic flux generated by the permanent magnet is ⁇ m, then the following equation (eq5) holds true instead of the above equation (eq1).
  • the rotating electric machine is not limited to one in which the field winding is provided on the rotor, but may be one in which the field winding is provided in the stator, such as a hybrid field flux switching motor (HEFSM).
  • HEFSM hybrid field flux switching motor
  • the rotating electric machine is not limited to a synchronous machine, but may be an asynchronous machine such as an induction machine.
  • the rotating electric machine is not limited to a radial type in which the rotor and stator face each other in the radial direction, but may also be an axial type in which the rotor and stator face each other in the axial direction of the rotating shaft.
  • the rotating electric machine is not limited to one with a star connection, but may be one with a delta connection. Further, the rotating electric machine and the inverter are not limited to three-phase machines, but may be two-phase machines, or four-phase machines or more.
  • the object of temperature increase by the temperature increase control may be, for example, the cooling water in the circulation path 400.
  • the temperature of the heating heat source can be quickly raised by temperature increase control.
  • the heat transfer unit is not limited to one that uses cooling water as the cooling fluid, but may be an air-cooled type that uses gas (air) as the cooling fluid, or a metal heat sink.
  • the heat sink may be provided with a power converter such as an inverter and a storage battery, for example.
  • the switch of the inverter is not limited to N-channel MOSFET, and may be, for example, IGBT. In this case, it is sufficient that a freewheel diode is connected in antiparallel to the IGBT.
  • the power storage unit connected to a power converter such as an inverter is not limited to a storage battery, but may include, for example, a large-capacity electric double layer capacitor, or a storage battery and an electric double layer capacitor.
  • the moving object on which the control device is mounted is not limited to a vehicle, but may be an aircraft or a ship, for example. Further, the location where the control device is mounted is not limited to a moving object, but may be a stationary device.
  • control unit and the method described in the present disclosure are implemented by a dedicated computer provided by configuring a processor and memory programmed to perform one or more functions embodied by a computer program. May be realized.
  • the controller and techniques described in this disclosure may be implemented by a dedicated computer provided by a processor configured with one or more dedicated hardware logic circuits.
  • the control unit and the method described in the present disclosure may be implemented using 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 implemented by one or more dedicated computers configured.
  • the computer program may also be stored as instructions executed by a computer on a computer-readable non-transitory tangible storage medium.
  • a power converter control device (60) applied to a system comprising: a determination unit that determines whether or not there is a request to increase the temperature of the temperature increase target; When the determination unit determines that there is a temperature increase request, the windings (32, 34U to 34W, 93A, 93B) are , 123U to 123W, 223U to 223W);
  • a control device for a power converter comprising: [Configuration 2]
  • the rotating electrical machine (30) has a multi-phase
  • the control unit controls the rotor (31) so that the current vector flowing through the field winding in the dq coordinate system has a component that reduces the reluctance torque of the rotating electric machine while maintaining the rotor (31) in a stopped rotation state.
  • the power converter control device according to Configuration 1, which performs switching control of the first inverter and the second inverter.
  • the rotating electric machine has a characteristic that the q-axis inductance is larger than the d-axis inductance
  • the control unit controls the first inverter so that a current vector flowing through the field winding in a dq coordinate system has a component that is 180 degrees different in phase from a phase of a current vector flowing through the armature winding in a dq coordinate system. and the power converter control device according to Configuration 2, which performs switching control of the second inverter.
  • the rotating electric machine has a characteristic that the d-axis inductance is larger than the q-axis inductance,
  • the control unit controls the first inverter and the first inverter so that a current vector flowing through the field winding in a dq coordinate system has the same component as a phase of a current vector flowing through the armature winding in a dq coordinate system.
  • the power converter control device according to configuration 2, which performs switching control of two inverters.
  • the control unit performs switching control of the first inverter and the second inverter so that the torque generated by the rotating electric machine is smaller than a torque threshold (Trqth),
  • the power converter control device according to any one of configurations 2 to 4, wherein the torque threshold is a torque at which the rotor starts rotating.
  • the rotating electric machine (90) has multiple systems of armature windings (93A, 93B) as the windings,
  • the rotor (91) is common to the armature windings of multiple systems,
  • Each of the power converters is an inverter (70, 80) individually provided corresponding to the armature winding of each system,
  • the control unit is configured to perform switching control on each of the inverters so as to mutually shift the phases of current vectors flowing through the armature windings of each system in a dq coordinate system in order to maintain a rotation stop state of the rotor.
  • the power converter control device according to 1.
  • the system includes a plurality of the rotating electric machines (120, 220) having armature windings (123U to 123W, 223U to 223W) as the windings,
  • Each of the power converters is an inverter (110, 210) individually provided corresponding to the armature winding of each of the rotating electric machines,
  • the system includes a power transmission section (301 to 303) that transmits power between the rotors (121, 221) of each of the rotating electric machines,
  • the control unit performs switching control of each of the inverters so as to mutually shift the phases of current vectors flowing through the armature windings of each of the rotating electrical machines in a dq coordinate system in order to maintain a rotation stop state of the rotor.
  • a control device for a power converter according to Configuration 1.
  • the control unit controls each of the rotating electrical machines so that the phase of the current vector flowing through the armature winding of each rotating electrical machine is shifted by "360/N" degrees in the dq coordinate system.
  • the power converter control device according to Configuration 9, which performs switching control of an inverter.
  • the control unit starts flowing d- and q-axis currents to the windings when it is determined by the judgment unit that there is a temperature increase request, and controls at least the amplitude and frequency of the d- and q-axis currents to be caused to flow through the windings.
  • the power converter control device according to any one of configurations 1 to 10, which performs switching control of each of the power converters so as to gradually increase one power converter.
  • Configuration 12 The control device for a power converter according to any one of configurations 1 to 11, wherein the system is mounted on a vehicle that includes a drive wheel (12, 305) that rotates by transmitting rotational power of the rotor. .

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PCT/JP2023/021479 2022-07-07 2023-06-09 電力変換器の制御装置、プログラム Ceased WO2024009686A1 (ja)

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JP2024531968A JP7839879B2 (ja) 2022-07-07 2023-06-09 電力変換器の制御装置、プログラム、制御方法
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2024224932A1 (ja) * 2023-04-24 2024-10-31 株式会社デンソー 電力変換器の制御装置、プログラム
EP4600074A1 (en) * 2024-02-09 2025-08-13 Toyota Jidosha Kabushiki Kaisha Driving apparatus
WO2025177759A1 (ja) * 2024-02-19 2025-08-28 株式会社デンソー インバータ制御装置、プログラム、インバータ制御方法
WO2025204530A1 (ja) * 2024-03-27 2025-10-02 株式会社デンソー 電力変換器の制御装置、プログラム及び電力変換器の制御方法

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WO2024224932A1 (ja) * 2023-04-24 2024-10-31 株式会社デンソー 電力変換器の制御装置、プログラム
EP4600074A1 (en) * 2024-02-09 2025-08-13 Toyota Jidosha Kabushiki Kaisha Driving apparatus
WO2025177759A1 (ja) * 2024-02-19 2025-08-28 株式会社デンソー インバータ制御装置、プログラム、インバータ制御方法
WO2025204530A1 (ja) * 2024-03-27 2025-10-02 株式会社デンソー 電力変換器の制御装置、プログラム及び電力変換器の制御方法

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US20250167705A1 (en) 2025-05-22
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