WO2018173771A1 - 回転電機制御装置 - Google Patents

回転電機制御装置 Download PDF

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Publication number
WO2018173771A1
WO2018173771A1 PCT/JP2018/008994 JP2018008994W WO2018173771A1 WO 2018173771 A1 WO2018173771 A1 WO 2018173771A1 JP 2018008994 W JP2018008994 W JP 2018008994W WO 2018173771 A1 WO2018173771 A1 WO 2018173771A1
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WO
WIPO (PCT)
Prior art keywords
rotating electrical
electrical machine
carrier frequency
field
power generation
Prior art date
Application number
PCT/JP2018/008994
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
和彦 多田
拓人 鈴木
Original Assignee
株式会社デンソー
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 株式会社デンソー filed Critical 株式会社デンソー
Priority to CN201880020108.3A priority Critical patent/CN110463023B/zh
Priority to DE112018001552.1T priority patent/DE112018001552T5/de
Publication of WO2018173771A1 publication Critical patent/WO2018173771A1/ja

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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
    • 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
    • H02P27/08—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 with pulse width modulation
    • H02P27/085—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 with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/08—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using pulses
    • 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
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • 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
    • H02P25/024—Synchronous motors controlled by supply frequency
    • 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
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • 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
    • B60L2240/421—Speed
    • 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
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/45—Special adaptation of control arrangements for generators for motor vehicles, e.g. car alternators
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the present disclosure relates to a rotating electrical machine control device applied to a wound field type rotating electrical machine.
  • Patent Document 1 in a configuration in which a carrier frequency that is a carrier frequency used for pulse width modulation is set according to a primary frequency that is a frequency of each phase voltage applied to an AC motor, the carrier frequency increases as the primary frequency increases.
  • a technique is disclosed in which the frequency is raised stepwise and the carrier frequency when the primary frequency is equal to or lower than the switching frequency is adjusted according to the amplitude of the current flowing in the AC motor.
  • phase current of each phase in the stator is controlled, and in addition to the phase current, the field current flowing in the field winding is controlled.
  • the power generation output is adjusted by controlling the field current.
  • field current control is performed by pulse width modulation (PWM).
  • PWM pulse width modulation
  • the frequency of the carrier used for the pulse width modulation of the field current control is predetermined as a predetermined value, and the switching elements constituting the field circuit are turned on / off by the carrier period determined by the carrier frequency.
  • the carrier frequency for pulse width modulation is set to a constant value in the field current control, so it is considered difficult to realize these various improvements.
  • these various improvements need to be realized in different situations, so that it is considered that control according to various situations is required to realize the appropriate field current control.
  • the present disclosure has been made in view of the above problems, and a main purpose thereof is to provide a rotating electrical machine control device capable of appropriately controlling a field current in a wound field rotating electrical machine.
  • a rotating electrical machine having an armature winding and a field winding, and a field circuit having a plurality of switching elements and energizing the field winding in accordance with on / off of the switching elements, a power generation function and a power running function
  • a rotating electrical machine control device that is applied to a rotating electrical machine system having at least one of the above and controls on / off of the switching element by field current control using pulse width modulation,
  • a setting unit that sets a carrier frequency that is a frequency of the carrier signal of the pulse width modulation based on the state of the rotating electrical machine;
  • the carrier frequency in the field current control is variably set based on the state of the rotating electrical machine during the operation of the rotating electrical machine.
  • the field current is controlled by pulse width modulation using the carrier frequency.
  • the carrier frequency in the field current control it is possible to appropriately respond to a request regarding responsiveness during operation of the rotating electrical machine, a request for heat reduction, a request for current ripple reduction, and the like.
  • the field current can be appropriately controlled in the wound field type rotating electrical machine.
  • the rotating electrical machine can perform a power generation operation and a power running operation
  • the setting unit sets the carrier frequency at different frequencies during power generation and power running of the rotating electrical machine,
  • the carrier frequency during power running is set larger than the carrier frequency during power generation.
  • the field current is controlled according to the required value of the power running torque.
  • the controllability of the power running torque can be improved by making the carrier frequency of the field current control during power running larger than the carrier frequency during power generation.
  • the carrier frequency in the field current control is large, the amount of heat generated in the field circuit may increase. In this respect, since the carrier frequency is relatively small during power generation between power generation and power running, adverse effects due to heat generation can be reduced.
  • the rotating electrical machine system is an in-vehicle system used in a vehicle including an internal combustion engine, and normal power generation that generates power using combustion energy of the internal combustion engine and regenerative power generation that generates power using travel energy of the vehicle.
  • the setting unit makes the carrier frequency larger when the regenerative power generation is performed than when the normal power generation is performed.
  • the field current is larger during the regenerative power generation because the power generation current in the rotating electrical machine is larger during the regenerative power generation.
  • the influence of current ripple can be reduced by increasing the carrier frequency in the field current control during regenerative power generation. In this case, a secondary effect that the capacity of the capacitor for current smoothing can be reduced can be obtained.
  • the rotating electrical machine system is an in-vehicle system used for a vehicle including an internal combustion engine, and can start the internal combustion engine by a power running operation and apply torque other than the start by the power running operation.
  • the setting unit increases the carrier frequency at the time of powering for starting the internal combustion engine than at the time of powering for applying torque other than the starting.
  • the drive current at the rotating electric machine is larger at the start, It is considered that the field current becomes larger at the start.
  • the influence of the current ripple can be reduced by increasing the carrier frequency in the field current control when starting the internal combustion engine. In this case, a secondary effect that the capacity of the capacitor for current smoothing can be reduced can be obtained.
  • the setting unit sets the carrier frequency in a transient period in which the field current changes during power generation or powering of the rotating electrical machine, in the steady period in which the field current is converged. Make it larger than the carrier frequency.
  • the rotating electrical machine performs a power generation operation or a power running operation
  • the carrier frequency of the field current control is increased
  • control is performed such that the carrier frequency for field current control is reduced.
  • field current control is performed with priority given to the convergence of the field current to the target value, and after convergence, field current control is given priority over heat reduction. Is done.
  • the setting unit sets the carrier frequency based on a target value of the field current in the field current control.
  • the degree of influence of the current ripple differs depending on the magnitude of the field current in the field current control.
  • appropriate field current control can be performed by setting the carrier frequency based on the target value of the field current in the field current control.
  • the target value of the field current is large, it is preferable to increase the carrier frequency compared to when the target value is small.
  • the setting unit sets the carrier frequency based on the rotation speed of the rotating electrical machine.
  • appropriate field current control can be implemented by setting the carrier frequency based on the rotational speed of the rotating electrical machine.
  • the carrier frequency is preferably set higher than when it is high.
  • the setting unit sets the carrier frequency based on the temperature of the field circuit.
  • the carrier frequency is preferably made smaller than when the temperature is low.
  • the ninth means is applied to a rotating electrical machine system including a phase winding for each phase of the rotating electrical machine as the armature winding and an inverter for energizing the phase winding, and uses pulse width modulation.
  • a rotating electrical machine control device that controls on / off of each switching element of the inverter by phase current control, wherein the setting unit is multiplied by "1 / integer" times the carrier frequency of pulse width modulation in the phase current control.
  • the field current control carrier frequency is set at a frequency of the control signal, the control unit synchronizes the field current control carrier signal with the phase current control carrier signal, and the power supply unit for the field winding
  • the field current control is performed so as to shift the phase of energization and the phase of energization from the power supply unit to the phase winding.
  • the field current control carrier signal is synchronized with the phase current control carrier signal, and the energization phase from the power supply to the field winding and the energization phase from the power supply to the phase winding It is possible to reduce current ripple by shifting.
  • FIG. 1 is an electric circuit diagram showing a power supply system.
  • FIG. 2 is a circuit diagram showing an electrical configuration of the rotating electrical machine unit.
  • FIG. 3 is a circuit diagram showing energization paths in the field circuit
  • FIG. 4 is a diagram showing the control content of the rotating electrical machine according to the rotational speed and torque
  • FIG. 5 is a flowchart showing a carrier setting processing procedure in the field current control.
  • FIG. 6 is a time chart specifically showing the field current control.
  • FIG. 7 is a flowchart showing a carrier setting processing procedure in field current control in another embodiment
  • FIG. 8 is a diagram showing the relationship between the field current and the carrier frequency.
  • FIG. 9 is a diagram showing the relationship between the rotational speed of the rotating electrical machine and the carrier frequency
  • FIG. 10 is a diagram showing the relationship between the temperature of the field circuit and the carrier frequency
  • FIG. 11 is a flowchart showing a processing procedure of field current control.
  • FIG. 12 is a diagram illustrating the relationship between phase current carriers and field current carriers.
  • a power supply system that supplies electric power to various devices of a vehicle in a vehicle that runs using an engine (internal combustion engine) as a drive source is embodied.
  • an engine internal combustion engine
  • the power supply system of this embodiment is a two-power supply system having a lead storage battery 11 and a lithium ion storage battery 12 as a power supply unit.
  • Each storage battery 11, 12 can supply power to the starter 13, various electric loads 14, 15, and the rotating electrical machine unit 20. Further, the storage batteries 11 and 12 can be charged by the rotating electrical machine unit 20.
  • a lead storage battery 11 and a lithium ion storage battery 12 are connected in parallel to the rotating electrical machine unit 20 and the electrical loads 14 and 15, respectively.
  • the lead storage battery 11 is a well-known general-purpose storage battery.
  • the lithium ion storage battery 12 is a high-density storage battery that has less power loss during charging / discharging and higher output density and energy density than the lead storage battery 11.
  • the lithium ion storage battery 12 is desirably a storage battery having higher energy efficiency during charging / discharging than the lead storage battery 11.
  • the lithium ion storage battery 12 is configured as an assembled battery having a plurality of single cells. These storage batteries 11 and 12 have the same rated voltage, for example, 12V.
  • the lithium ion storage battery 12 is housed in a housing case and configured as a battery unit 30 integrated with a substrate.
  • the battery unit 30 has output terminals P1, P2, and P3, of which the lead storage battery 11, the starter 13, and the electric load 14 are connected to the output terminals P1 and P3, and the electric load 15 and the rotation are output to the output terminal P2.
  • the electric unit 20 is connected.
  • the electric loads 14 and 15 have different requirements for the voltage of power supplied from the storage batteries 11 and 12.
  • the electric load 14 includes a constant voltage required load that is required to be stable so that the voltage of the supplied power is constant or at least fluctuates within a predetermined range.
  • the electric load 15 is a general electric load other than the constant voltage required load.
  • the electric load 14 that is a constant voltage required load include various ECUs such as a navigation device, an audio device, a meter device, and an engine ECU. In this case, by suppressing the voltage fluctuation of the supplied power, it is possible to suppress the occurrence of unnecessary reset and the like in each of the above devices, and ensure stable operation.
  • the electric load 14 may include a travel system actuator such as an electric steering device or a brake device.
  • Specific examples of the electric load 15 include a seat heater, a heater for a defroster for a rear window, a headlight, a wiper for a front window, and a blower fan for an air conditioner.
  • the rotating electrical machine unit 20 includes a rotating electrical machine 21, an inverter 22, a field circuit 23, and a rotating electrical machine ECU 24 that controls the operation of the rotating electrical machine 21.
  • the rotating electrical machine unit 20 is a generator with a motor function, and is configured as an electromechanically integrated ISG (Integrated / Starter / Generator).
  • the rotating shaft of the rotating electrical machine 21 is drivingly connected to the output shaft of the engine 100, which is an internal combustion engine, by a connecting member such as a belt. Details of the rotating electrical machine unit 20 will be described later.
  • the battery unit 30 is provided with an electrical path L1 that connects the output terminals P1 and P2 and an electrical path L2 that connects the point N1 on the electrical path L1 and the lithium ion storage battery 12 as an in-unit electrical path.
  • the switch 31 is provided in the electrical path L1
  • the switch 32 is provided in the electrical path L2.
  • the battery unit 30 is provided with a bypass path L3 that bypasses the switch 31.
  • the bypass path L3 is provided so as to connect the output terminal P3 and the point N1 on the electrical path L1.
  • the output terminal P3 is connected to the lead storage battery 11 via the fuse 35.
  • a bypass switch 36 composed of a normally closed mechanical relay is provided in the bypass path L3, for example. By turning on (closing) the bypass switch 36, the lead storage battery 11, the electric load 15, and the rotating electrical machine unit 20 are electrically connected even if the switch 31 is turned off (opened).
  • the battery unit 30 includes a battery ECU 37 that controls on / off (opening / closing) of the switches 31 and 32.
  • the battery ECU 37 is constituted by a microcomputer including a CPU, a ROM, a RAM, an input / output interface, and the like.
  • the battery ECU 37 controls the on / off of the switches 31 and 32 based on the storage state of each of the storage batteries 11 and 12 and the command value from the engine ECU 40 that is the host controller. Thereby, charging / discharging is implemented using the lead storage battery 11 and the lithium ion storage battery 12 selectively.
  • the battery ECU 37 calculates the SOC (State Of Charge) of the lithium ion storage battery 12 and controls the charge amount and discharge amount of the lithium ion storage battery 12 so that the SOC is maintained within a predetermined use range.
  • SOC State Of Charge
  • the rotating electrical machine ECU 24 of the rotating electrical machine unit 20 and the battery ECU 37 of the battery unit 30 are connected to an engine ECU 40 as a host controller that manages the ECUs 24 and 37 in an integrated manner.
  • the engine ECU 40 is composed of a microcomputer including a CPU, ROM, RAM, input / output interface, and the like, and controls the operation of the engine 42 based on the engine operating state and the vehicle traveling state each time.
  • the engine ECU 40 has a function of performing idling stop control. As is well known, the idling stop control automatically stops the engine when a predetermined automatic stop condition is satisfied, and restarts the engine when the predetermined restart condition is satisfied under the automatic stop state.
  • Each of the ECUs 24, 37, 40 and other various in-vehicle ECUs are connected to each other via a communication line 41 that constructs a communication network such as a CAN and can communicate with each other, and bidirectional communication is performed at a predetermined cycle. Is done. Thereby, the various data memorize
  • the rotating electrical machine 21 is a three-phase AC motor, and includes U-phase, V-phase, and W-phase phase windings 25U, 25V, and 25W as a three-phase armature winding 25, and a field winding 26.
  • Each phase winding 25U, 25V, 25W is star-connected and connected to each other at a neutral point. Since the rotating electrical machine 21 is drivingly connected to the engine 100, the rotating shaft of the rotating electrical machine 21 is rotated by the rotation of the engine output shaft, and the engine output shaft is rotated by the rotation of the rotating shaft of the rotating electrical machine 21. .
  • the rotating electrical machine 21 has a power generation function that generates power (regenerative power generation) by rotating the engine output shaft and the axle, and a power running function that applies rotational force to the engine output shaft.
  • the rotating electrical machine 21 is driven by powering at the time of engine restart in idling stop control or torque assist for vehicle acceleration.
  • the inverter 22 converts the AC voltage output from each phase winding 25U, 25V, 25W into a DC voltage and outputs it to the battery unit 30.
  • the inverter 22 converts the DC voltage input from the battery unit 30 into an AC voltage and outputs the AC voltage to the phase windings 25U, 25V, and 25W.
  • the inverter 22 is a bridge circuit having the same number of upper and lower arms as the number of phases of the phase winding, and constitutes a three-phase full-wave rectifier circuit.
  • the inverter 22 constitutes a drive circuit that drives the rotating electrical machine 21 by adjusting the electric power supplied to the rotating electrical machine 21.
  • the inverter 22 includes an upper arm switch Sp and a lower arm switch Sn for each phase.
  • the switches Sp and Sn of each phase are alternately turned on and off, time-series energization is performed for each phase.
  • voltage controlled semiconductor switching elements are used as the switches Sp and Sn, and specifically, N-channel MOSFETs are used.
  • An upper arm diode Dp is connected in antiparallel to the upper arm switch Sp, and a lower arm diode Dn is connected in antiparallel to the lower arm switch Sn. That is, each of the diodes Dp and Dn is provided in such a direction that the cathode is the power supply side and the anode is the ground side.
  • parasitic diodes of the switches Sp and Sn are used as the diodes Dp and Dn.
  • the diodes Dp and Dn are not limited to parasitic diodes, and may be diodes that are separate from the switches Sp and Sn, for example.
  • An intermediate point of the series connection body of the switches Sp and Sn in each phase is connected to one end of each phase winding 25U, 25V, and 25W.
  • the inverter 22 is provided with a current detector 29 that detects the phase currents Iu, Iv, and Iw in the current path for each phase.
  • the current detection unit 29 has a configuration including, for example, a shunt resistor and a current transformer.
  • the field circuit 23 energizes the field winding 26 in accordance with on / off of a plurality of switching elements.
  • the field circuit 23 includes one cutoff switch 50 and four field switches 51, 52, 53, and 54, and the field switches 51 to 54 constitute an H-bridge rectifier circuit.
  • the basic configuration of each of the switches 50 to 54 is the same as that of each switch of the inverter 22, and a diode Di is connected to the semiconductor switching element in antiparallel.
  • field switches 51 and 52 are connected in series between the power supply unit (battery unit 30 in FIG. 2) and the ground, and field switches 53 and 54 are connected between the power supply unit and the ground. They are connected in series. Then, the high side of the field switches 51 and 53, the intermediate points of the field switches 51 and 52 and the field switches 53 and 54, and the low side of the field switches 52 and 54 are electrically connected to each other.
  • the field switches 51 to 54 are connected in an H bridge shape.
  • the field switch 53 is provided in parallel with the field switch 51
  • the field switch 54 is provided in parallel with the field switch 52.
  • the field winding 26 is provided in a path portion that connects an intermediate point between the field switches 51 and 52 and an intermediate point between the field switches 53 and 54.
  • the field switches 51 to 54 are also referred to as a first switch 51, a second switch 52, a third switch 53, and a fourth switch 54, respectively.
  • the cut-off switch 50 is provided between the power supply unit and the first switch 51, and more specifically, between the bus connected to the battery unit 30 and the branch point of the first switch 51 and the third switch 53.
  • the power supply to the field circuit 23 and the power cutoff are switched by turning on and off the cutoff switch 50.
  • FIG. 3 shows an energization path in the field circuit 23.
  • the cutoff switch 50 is always on (fixed on)
  • the third switch 53 is always off (fixed off)
  • the fourth switch 54 is always on ( On-fixed).
  • the first switch 51 and the second switch 52 are turned on and off in a conflicting period. In this case, when the first switch 51 is turned on and the second switch 52 is turned off, as shown by a broken line in FIG.
  • the current detection unit 55 On the ground side of the fourth switch 54, a current detector 55 that detects the field current If flowing in the field winding 26 is provided.
  • the current detection unit 55 has a configuration including, for example, a shunt resistor and a current transformer.
  • a voltage sensor 45 that detects an input / output voltage (that is, a power supply voltage) of the inverter 22 is provided on the high-voltage side path of the inverter 22.
  • the rotary electric machine 21 is provided with a temperature sensor 46 that detects, for example, the temperature of the stator as the temperature of the rotary electric machine 21.
  • the temperature sensor 46 may detect the temperature of the semiconductor switching element. The detection signals of each sensor including these are appropriately input to the rotating electrical machine ECU 24.
  • Each switch constituting the inverter 22 and the field circuit 23 is independently switched on / off via a driver 27.
  • the rotating electrical machine ECU 24 is configured by a microcomputer including a CPU, a ROM, a RAM, an input / output interface, and the like.
  • the rotating electrical machine ECU 24 adjusts the excitation current flowing through the field winding 26 by an IC regulator (not shown) inside. Thereby, the power generation voltage (output voltage with respect to the battery unit 30) of the rotating electrical machine unit 20 is controlled.
  • the rotating electrical machine ECU 24 controls on / off of the switches Sp and Sn of each phase according to the energization phase, and controls the phase current of each phase by adjusting the on / off ratio (for example, duty ratio) when energizing each phase. To do.
  • the rotating electrical machine unit 20 of the present embodiment can perform, as a power generation function, normal power generation that generates power using the combustion energy of the engine 100 and regenerative power generation that generates power using vehicle travel energy (regenerative energy). . Further, the rotating electrical machine unit 20 can perform the start of the engine 100 by a power running operation and the torque assist for the engine 100 as a torque application other than the engine start. During the power generation or power running of the rotating electrical machine 21, phase current control accompanying switching control in the inverter 22 is performed.
  • the rotating electrical machine ECU 24 calculates the phase current command value based on the power running torque command value and the power generation voltage command value from the engine ECU 40 which is the host controller, and the phase current command value and the actual phase current (current detection unit 29).
  • the operation signal is generated as a duty signal for controlling the phase current of each phase based on the deviation from the detected current value).
  • the command voltage is calculated for each phase based on the deviation between the phase current command value and the detected current value, and the operation is performed by PWM processing based on the magnitude comparison between the command voltage and a carrier signal (for example, a triangular wave signal).
  • a signal (PWM signal) is generated.
  • the rotating electrical machine ECU 24 turns on and off the upper arm switch Sp and the lower arm switch Sn for each phase according to the operation signal of each phase. Thereby, each phase current of the rotating electrical machine 21 is feedback-controlled.
  • the carrier frequency for phase current control is, for example, 1 to several kHz.
  • the inverter 22 different control is performed by the inverter 22 according to the rotational speed and torque (required torque) of the rotating electrical machine 21 during power running and during power generation. That is, when the rotating electrical machine 21 is powered, PWM control and rectangular wave control are appropriately switched based on the rotational speed and torque of the rotating electrical machine 21. When the rotating electrical machine 21 generates power, the rotational speed and torque of the rotating electrical machine 21 are switched. Based on the above, PWM control, synchronous rectification control, and diode rectification control are appropriately switched.
  • sinusoidal AC control is performed by changing the length of the ON period that occupies a predetermined carrier cycle when energizing the switches Sp and Sn of each phase constituting the inverter 22.
  • the rectangular wave control the rectangular wave AC control is performed by alternately switching the switches Sp and Sn of each phase on and off in half cycles of one electrical angle cycle.
  • the synchronous rectification control when the rotating electrical machine 21 generates power, the switches connected in parallel to the diodes through which the current flows are sequentially synchronized with the period in which the current flows through the diodes Dp and Dn connected in parallel to the switches Sp and Sn, respectively. It is turned on, thereby rectifying.
  • the diode rectification control all the switches Sp and Sn are turned off, and rectification is performed by the diodes Dp and Dn connected in parallel to the switches Sp and Sn.
  • FIG. 4 The separation of the control of the rotating electrical machine 21 according to the rotational speed and torque will be specifically described with reference to FIG.
  • the upper side shows the control content during power running
  • the lower side shows the control content during power generation.
  • PWM control is performed in the region A where the rotational speed is less than the first rotational speed F1
  • rectangular wave control is performed in the region B where the rotational speed is equal to or higher than the first rotational speed F1.
  • the first rotation speed F1 is set to a value that changes according to the torque.
  • the first rotation speed F1 may be a fixed value that does not depend on torque.
  • the PWM control can increase the output torque of the rotating electrical machine 21 compared to the rectangular wave control.
  • the load and switching loss in the control increase. Therefore, PWM control is performed in the region A where the rotational speed is low, and rectangular wave control is performed in the region B where the rotational speed is high.
  • PWM control is performed in the region C where the rotation speed is less than the second rotation speed F2, the rotation speed is equal to or higher than the second rotation speed F2 and less than the third rotation speed F3, and Synchronous rectification control is performed in the region D where the torque (power generation torque) is equal to or greater than the predetermined torque T1 (F2 ⁇ F3).
  • the diode rectification control is performed in the region E in which the rotation speed is equal to or higher than the second rotation speed F2 and the torque is less than the torque T1 or the rotation speed is equal to or higher than the third rotation speed F3.
  • the second rotation speed F2 and the third rotation speed F3 are fixed values that do not depend on torque. Note that the second rotation speed F2 and the third rotation speed F3 may be set to values that change according to torque, respectively.
  • the rotating electrical machine ECU 24 calculates a field current command value based on the power running torque command value and the generated voltage command value from the engine ECU 40, and the field current command value and the actual field current (of the current detection unit 55).
  • An operation signal is generated as a duty signal for field current control based on the deviation from the current detection value.
  • the command voltage is calculated based on the deviation between the field current command value and the detected current value, and the operation signal (PWM signal) is generated by PWM processing based on the magnitude comparison between the command voltage and the carrier signal.
  • PWM signal is generated by PWM processing based on the magnitude comparison between the command voltage and the carrier signal.
  • the carrier frequency for PWM control is variably set based on the state of the rotating electrical machine 21, and the field current is controlled by PWM control using the carrier frequency. It is a feature. In the present embodiment, there are roughly the following characteristic points.
  • the carrier frequency is set at a different frequency between the time of power generation of the rotating electrical machine 21 and the time of power running. Make it larger than the carrier frequency of the hour. In this case, the controllability of the power running torque can be improved by increasing the carrier frequency of the field current control during power running. By increasing the carrier frequency, for example, when the field current is transiently changed with respect to the target value, the field current can be quickly converged to the target value without causing overshoot.
  • the carrier frequency in the field current control is large, the amount of heat generated in the field circuit 23 may be large. In this respect, since the carrier frequency is relatively small during power generation between power generation and power running, adverse effects due to heat generation can be reduced.
  • the rotating electrical machine ECU 24 increases the carrier frequency when performing regenerative power generation of the rotating electrical machine 21 compared to when performing normal power generation.
  • the field current is larger during the regenerative power generation because the power generation current in the rotating electrical machine 21 is larger during the regenerative power generation.
  • the influence of current ripple can be reduced by increasing the carrier frequency in the field current control during regenerative power generation.
  • the rotating electrical machine ECU 24 increases the carrier frequency compared to the time of power running for torque assist. Comparing the time when the engine is started with the power running operation and the time when the torque is assisted, the rotational speed of the rotating electrical machine 21 is smaller when the engine is started. From this point of view, it is desirable to increase the carrier frequency in the field current control when starting the engine than when torque assisting.
  • the drive current in the rotating electrical machine 21 is larger when the engine is started, and therefore it is considered that the field current becomes larger when the engine is started.
  • the influence of the current ripple can be reduced by increasing the carrier frequency in the field current control when starting the engine.
  • FIG. 5 is a flowchart showing a carrier setting processing procedure in the field current control, and this processing is performed by the rotating electrical machine ECU 24 at a predetermined cycle.
  • the carrier frequency fc is set to a frequency higher than that at the time of normal power generation (fc2> fc1).
  • the carrier frequency fc is set to be higher than that during torque assist (fc3> fc4).
  • FIG. 6 is a time chart specifically showing the field current control when the idling stop control of the vehicle is performed.
  • the vehicle is in a traveling state before timing t1, and the engine 100 is in a combustion operation.
  • normal power generation in the rotating electrical machine 21 is appropriately performed according to the storage state of each of the storage batteries 11 and 12.
  • the carrier current fc for field current control is set to fc1 in the period Ta.
  • the engine 100 is restarted by the power running operation of the rotating electrical machine 21.
  • the carrier current fc of the field current control is set to fc3 during the period Tc in which the rotating electrical machine 21 performs the power running operation.
  • torque assist of engine 100 is performed by the power running operation of rotating electrical machine 21.
  • the carrier current fc for field current control is set to fc4 during the period Td during which the rotating electrical machine 21 performs a power running operation. It should be noted that torque assist is performed in the same way when the vehicle is accelerated other than when the vehicle starts.
  • the carrier frequency fc in the field current control is variably set based on the state of the rotating electrical machine 21 and the field current is controlled by pulse width modulation using the carrier frequency fc during the operation of the rotating electrical machine 21. It was. In this case, by changing the carrier frequency fc in the field current control, it is possible to appropriately respond to a request regarding responsiveness during operation of the rotating electrical machine 21, a request for heat reduction, a request for current ripple reduction, and the like. Moreover, it becomes possible to meet the demand according to the situation. As a result, the field current can be appropriately controlled in the winding field type rotating electrical machine 21.
  • the carrier frequency during powering of the rotating electrical machine 21 was made larger than the carrier frequency during power generation (with fc1, fc2 ⁇ fc3, fc4). Thereby, in addition to improving the controllability of the power running torque, it is possible to reduce adverse effects due to heat generation as much as possible.
  • the carrier frequency When carrying out regenerative power generation by the rotating electrical machine 21, the carrier frequency was made larger than when carrying out normal power generation (with fc1 ⁇ fc2). Thereby, the field current can be appropriately controlled while taking into consideration the difference in generated current between normal power generation and regenerative power generation. At this time, the influence of current ripple can be reduced by increasing the carrier frequency during regenerative power generation. By reducing the current ripple, a secondary effect that the capacitance of the capacitor connected to the power supply line for current smoothing can be reduced can be obtained. Moreover, heat reduction in the field circuit 23 can be achieved by reducing the carrier frequency during normal power generation.
  • the carrier frequency was set to be larger at the time of powering for starting the engine than at the time of powering for torque assist (fc3> fc4).
  • the field current can be appropriately controlled while taking into account the difference in rotational speed of the rotating electrical machine 21 between when the engine is started by the rotating electrical machine 21 and when the torque is assisted.
  • the influence of the current ripple can be reduced by increasing the carrier frequency when starting the engine.
  • heat reduction in the field circuit 23 can be achieved.
  • the field current control can be performed in consideration of the difference in driving current of the rotating electrical machine 21 between the engine start and the torque assist, the influence of the current ripple can be reduced.
  • the carrier frequency in the transient period in which the field current changes during power generation or powering of the rotating electrical machine 21 may be configured to be larger than the carrier frequency in the steady period in which the field current converges.
  • the field frequency control carrier frequency is increased, and in the steady period after the field current converges, the field current is Decrease the carrier frequency for magnetic current control.
  • the transition period is set. If the change amount of the field current within the predetermined time is less than the predetermined time, the steady period is set.
  • the rotating electrical machine ECU 24 performs the processing of FIG. 7 when the engine is started by the power running operation of the rotating electrical machine 21, for example.
  • step S ⁇ b> 21 it is determined whether or not the engine is being started by powering of the rotating electrical machine 21.
  • step S21 is YES
  • step S22 it is determined whether or not it is a transient period of the field current. If it is a transient period, the process proceeds to step S23, and the carrier frequency fc is set to fc11. If it is a steady period, the process proceeds to step S24, and the carrier frequency fc is set to fc12. In this case, fc11> fc12.
  • the same control can be carried out during torque assist by the power running operation of the rotating electrical machine 21, during normal power generation of the rotating electrical machine 21, and during regenerative power generation.
  • FIG. 7 may be performed as the process of step S17 of FIG.
  • the rotating electrical machine ECU 24 may be configured to implement FIG. 7 instead of FIG. 5.
  • the field current control is performed with priority on the convergence property of the field current to the target value, and after the convergence, the heat reduction is prioritized.
  • field current control is performed. Thereby, further optimization of field current control is realizable.
  • the carrier frequency fc may be set based on the target value of the field current in the field current control.
  • the rotating electrical machine ECU 24 sets the carrier frequency fc based on the relationship shown in FIG. In this case, considering that the influence of the current ripple varies depending on the field current, the carrier frequency fc is preferably increased when the field current is large compared to when the field current is small.
  • This configuration can be implemented in the processing of FIGS. 5 and 7, for example. Further, it can be carried out separately from FIG. 5 and FIG. By setting the carrier frequency fc based on the field current, appropriate field current control can be performed.
  • the carrier frequency fc may be set based on the rotation speed of the rotating electrical machine 21.
  • the rotating electrical machine ECU 24 sets the carrier frequency fc based on, for example, the relationship shown in FIG. In this case, considering that the influence degree of the current ripple varies depending on the rotation speed of the rotating electrical machine 21, the carrier frequency fc may be increased when the rotation speed of the rotating electrical machine 21 is small compared to when it is large.
  • This configuration can be implemented in the processing of FIGS. 5 and 7, for example. Further, it can be carried out separately from FIG. 5 and FIG.
  • the carrier frequency fc may be set based on the temperature of the field circuit 23.
  • the rotating electrical machine ECU 24 sets the carrier frequency fc based on the relationship of FIG. In this case, when the temperature of the field circuit 23 is high in consideration of the fact that it is not desirable that the amount of heat generation increases as the carrier frequency fc increases under the situation where the field circuit 23 is at a high temperature.
  • the carrier frequency fc is preferably made smaller than when it is low.
  • This configuration can be implemented in the processing of FIGS. 5 and 7, for example. Further, it can be carried out separately from FIG. 5 and FIG.
  • the detection value of the temperature sensor 46 that detects the stator temperature can be used. It is also possible to provide a temperature sensor in the field circuit 23 and use the detected value.
  • the torque assist of the engine 100 is assumed as the torque application other than the engine start by the rotating electrical machine 21, but is not limited to this.
  • it is good also as a structure which carries out the power running operation of the rotary electric machine 21 at the time of creep driving
  • the carrier frequency fc in the field current control is greater when starting the engine than when applying the running torque. Should be increased.
  • the field current control may be performed by shifting the phase of energization from the power supply unit to the field winding 26 and the phase of energization from the power supply unit to the phase windings 25U, 25V, and 25W.
  • FIG. 11 is a flowchart showing a control procedure by the rotating electrical machine ECU 24, and this processing is performed at a predetermined cycle.
  • step S31 it is determined whether or not PWM control is being performed in the inverter 22. If PWM control is being performed, the process proceeds to subsequent step S32.
  • step S32 the field current control carrier frequency is set at a frequency that is "1 / integer" times the phase current control carrier frequency.
  • the rotating electrical machine ECU 24 sets the carrier frequency for field current control, such as the same frequency as the carrier frequency for phase current control, a frequency that is 1/2 times, a frequency that is 1/3 times, or the like.
  • the rotating electrical machine ECU 24 sets the carrier frequency based on the state of the rotating electrical machine 21 as described above while multiplying the carrier frequency of the phase current control by “1 / integer”.
  • step S33 the field current control carrier signal is synchronized with the phase current control carrier signal, the phase of energization from the power supply unit to the field winding 26, and the power supply to the phase windings 25U, 25V, and 25W.
  • the field current control is performed so as to shift the phase of energization from the unit.
  • field current control by PWM control is performed as described above.
  • step S31 is NO, field current control is performed by a method other than steps S32 and s33.
  • the field current control carrier frequency is set at a frequency that is 1 ⁇ 2 times the phase current control carrier frequency.
  • the carrier signals triangular wave signals
  • the duty signal for the upper arm switch of the inverter 22 is calculated by comparing the carrier signal and the command voltage in the phase current control
  • the field circuit is calculated by comparing the carrier signal and the command voltage in the field current control.
  • duty signals for the first switch 51 are calculated. These duty signals are configured such that energization phases are shifted from each other. In this case, the center of the on period of the phase current duty signal does not coincide with the center of the on period of the field current duty signal.
  • Rotating electric machine (21) having an armature winding (25) and a field winding (26) composed of phase windings (25U, 25V, 25W) for each phase, and on / off of a plurality of switching elements (Sp, Sn)
  • an inverter (22) for energizing the phase winding and a field circuit (23) for energizing the field winding by turning on and off a plurality of switching elements (51 to 54), and having a power generation function and a power running function Applied to a rotating electrical machine system having at least one, and performs switching control of the inverter by phase current control using pulse width modulation, and switching control of the field circuit by field current control using pulse width modulation
  • a rotating electrical machine control device (24) for carrying out During operation of the rotating electrical machine, a setting unit that sets the carrier frequency of the field current control at a frequency that is “1 / integer” times the carrier frequency of the pulse width modulation in the phase current control; The carrier signal for the field current control is synchronized
  • a rotating electrical machine system having both a power generation function and a power running function is assumed, but application to a rotating electrical machine system having only one of the power generation function and the power running function is also possible.
  • the rotating electrical machine system has only the power generation function, only steps S11 to S14 in FIG. 5 may be implemented. If the rotating electrical machine system has only the power running function, steps S15 to S15 in FIG. What is necessary is just to set it as the structure which implements only S18.
  • the field circuit 23 is configured with an H-bridge circuit, but the field circuit 23 may be configured with a half-bridge circuit instead.
  • the rotating electrical machine 21 and the circuit unit of the inverter 22 and the field circuit 23 are integrally provided as the rotating electrical machine unit 20, but the present invention is not limited to this.
  • a configuration in which the rotating electrical machine 21 and the circuit units of the inverter 22 and the field circuit 23 are provided separately may be employed.
  • ⁇ Applications other than power supply systems with two storage batteries are also possible.
  • a storage battery the structure which has only the lead storage battery 11 or the structure which has only the lithium ion storage battery 12 may be sufficient.
  • the power supply system to which the present disclosure is applied can be used for purposes other than vehicles.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Ac Motors In General (AREA)
PCT/JP2018/008994 2017-03-23 2018-03-08 回転電機制御装置 WO2018173771A1 (ja)

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DE112018001552.1T DE112018001552T5 (de) 2017-03-23 2018-03-08 Steuervorrichtung für drehende elektrische Maschine

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JPH01283030A (ja) * 1988-05-06 1989-11-14 Hitachi Ltd 自動車用充電発電機の制御装置
JPH02241399A (ja) * 1989-03-15 1990-09-26 Hitachi Ltd 自動車用充電発電機制御装置
JP2006115619A (ja) * 2004-10-15 2006-04-27 Denso Corp 車両用発電制御装置および発電システム
JP2009130954A (ja) * 2007-11-20 2009-06-11 Mitsubishi Electric Corp 電力変換器

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JPS6019904B2 (ja) 1980-11-10 1985-05-18 昭和電工株式会社 Ｎ−フエニル−ジクロルマレイミド誘導体及び農園芸用殺菌剤
JP3684871B2 (ja) * 1998-10-27 2005-08-17 トヨタ自動車株式会社 電力変換器の温度保護制御装置
GB2423652B (en) * 2005-02-24 2008-06-11 Alstom Exciter assemblies
JP4903243B2 (ja) * 2009-05-19 2012-03-28 三菱電機株式会社 発電機装置
JP5406263B2 (ja) * 2011-11-10 2014-02-05 三菱電機株式会社 電源監視装置
JP6623634B2 (ja) 2015-09-15 2019-12-25 セイコーエプソン株式会社 物理量センサー、電子機器および移動体

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JPH01283030A (ja) * 1988-05-06 1989-11-14 Hitachi Ltd 自動車用充電発電機の制御装置
JPH02241399A (ja) * 1989-03-15 1990-09-26 Hitachi Ltd 自動車用充電発電機制御装置
JP2006115619A (ja) * 2004-10-15 2006-04-27 Denso Corp 車両用発電制御装置および発電システム
JP2009130954A (ja) * 2007-11-20 2009-06-11 Mitsubishi Electric Corp 電力変換器

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JP2018161017A (ja) 2018-10-11

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