WO2008015863A1 - Electric power supply apparatus and vehicle having electric power supply apparatus - Google Patents
Electric power supply apparatus and vehicle having electric power supply apparatus Download PDFInfo
- Publication number
- WO2008015863A1 WO2008015863A1 PCT/JP2007/063190 JP2007063190W WO2008015863A1 WO 2008015863 A1 WO2008015863 A1 WO 2008015863A1 JP 2007063190 W JP2007063190 W JP 2007063190W WO 2008015863 A1 WO2008015863 A1 WO 2008015863A1
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- WIPO (PCT)
- Prior art keywords
- current
- voltage
- power supply
- carrier signal
- phase difference
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
- B60L1/04—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
- B60L1/10—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line with provision for using different supplies
- B60L1/12—Methods and devices for control or regulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
-
- 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
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
- B60L2210/14—Boost converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- 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
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a power supply device and a vehicle including the power supply device, and more particularly to a power supply device including a plurality of voltage converters and a vehicle including the power supply device.
- Japanese Patent Laid-Open No. 2 0 0 3 — 2 0 9 9 6 9 discloses an electric power and control system for an electric traction motor of a vehicle, and includes at least one inverter that provides adjusted electric power to the electric traction motor. Each of which has a battery and a boost Z-back DC.DC converter and is wired in parallel, and supplies the inverter with DC power, and the batteries of the plurality of power stages are charged and discharged equally.
- a power supply control system including a controller that controls a plurality of power supply stages so that the plurality of power supply stages maintains an output voltage to the inverter is disclosed.
- An object of the present invention is to provide a power supply device including a plurality of voltage converters and a vehicle including the power supply device while suppressing an increase in the number of current sensors.
- the present invention provides a power supply device, the first and second power storage devices, the first voltage converter provided between the first power storage device and the load circuit, and the second power storage device.
- a second voltage converter provided between the load circuit, a first current path connected to the output of the first voltage converter, and an output of the second voltage converter;
- a second current path connected to the first current path, a third current path connected between the junction and the load circuit, a current sensor for detecting a current flowing through the third current path, 1.
- a control device that controls the second voltage converter and monitors the current detection value of the current sensor.
- the control device performs pulse width modulation control of the first and second voltage converters based on the first and second carrier signals having the same frequency and a phase difference.
- the control device then provides a time difference corresponding to the phase difference, samples the current detection value, and obtains individual current values that flow through the first and second voltage comparators.
- the control device generates a first drive signal for the first voltage converter based on the signal generation unit that generates the first carrier signal, the first command value, and the first carrier signal.
- a second voltage converter based on the second command value and the second carrier signal, a phase changing unit for adding a phase difference to the first carrier signal and outputting a second carrier signal, and a second command value and a second carrier signal.
- a second modulation unit for generating a second drive signal for.
- the phase difference is 1800 degrees.
- the phase changing unit adjusts the phase difference so that the rising timing of the second drive signal coincides with the falling timing of the first drive signal.
- the power supply device has one end connected to a connection point on the third current path, and smoothes the output from the first voltage converter and the output from the second voltage converter to supply to the load circuit.
- a capacitor is further provided. The current sensor detects the current flowing between the junction and connection point of the third current path.
- each of the first and second voltage converters includes a chopper circuit.
- any one of the above power supply devices and a wheel drive motor are provided.
- the vehicle includes a drive inverter, and the load circuit includes the inverter. According to the present invention, an increase in the number of current sensors can be suppressed in realizing a power supply device including a plurality of voltage converters.
- FIG. 1 is a diagram showing a main configuration of a vehicle 100 according to the first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the control device 3.0 in FIG.
- FIG. 3 is a functional block diagram illustrating the configuration of boost converter control section 131 in FIG.
- FIG. 4 is a diagram showing operation waveforms related to the control of the boost converter.
- FIG. 5 is a functional block diagram showing a modification of the boost converter control unit shown in FIG.
- FIG. 6 is a waveform diagram of output currents of boost converters 12 A and 12 B in the second embodiment.
- FIG. 7 is a block diagram showing the configuration of the vehicle 2 0 0 according to the third embodiment.
- FIG. 1 is a diagram showing a main configuration of a vehicle 100 according to the first embodiment of the present invention.
- the vehicle 100 is a hybrid vehicle that uses both a motor and an engine for driving the vehicle.
- the present invention can also be applied to an electric vehicle, a fuel cell vehicle, and the like that drive wheels with a motor. .
- vehicle 100 includes batteries BA and B B, and a boost converter 1 2
- A, 12B, smoothing capacitors C IA, C 1 B, C 2, voltage sensors 13, 2 1 A, 21 B, load circuit 23, engine 4, motor generators MG 1, MG 2, power A dividing mechanism 3, a wheel 2, and a control device 30 are included.
- the vehicle 100 further includes power lines PL 1A, PL 1 B, PL 2 and a ground line.
- Voltage sensor 10A for detecting voltage VBA between terminals of battery SL and battery BA, and voltage sensor 10B for detecting voltage VBB between terminals of battery BB.
- a secondary battery such as a lead storage battery, a nickel hydrogen battery, or a lithium ion battery can be used.
- Capacitor C 1 A smoothes the voltage across battery B A.
- Capacitor C 1A is connected between the power line P L 1 A and the ground line S L.
- Capacitor C 1 B smoothes the voltage across battery BB.
- Capacitor C 1 B is connected between power line PL 1 B and ground line SL.
- the voltage sensor 21A detects the voltage VL A across the capacitor C 1 A and outputs it to the control device 30.
- Boost converter 12 A boosts the voltage across capacitor C I A.
- the voltage sensor 2 1 B detects the voltage VL B across the capacitor C 1 B and outputs it to the control device 30.
- Boost converter 12B boosts the voltage across terminals of capacitor C 1 B.
- Capacitor C 2 smoothes the voltage boosted by one or both of boost converters 12A and 12B.
- the voltage sensor 13 detects the terminal voltage VH of the smoothing capacitor C 2 and outputs it to the control device 30.
- Load circuit 23 includes inverters 14 and 22.
- Inverter 14 converts the DC voltage supplied from boost converter 12 into a three-phase AC, and outputs the same to motor generator MG 1.
- Power split mechanism 3 is a mechanism that is coupled to engine 4 and motor generators MG 1 and MG 2 and distributes the power between them.
- a planetary gear mechanism having three rotating shafts of a sun gear, a planetary carrier, and a ring gear can be used as the power split mechanism. These three rotating shafts are connected to the rotating shafts of engine 4 and motor generators MG1 and MG2, respectively.
- the rotating shaft of motor generator MG 2 is coupled to wheel 2 by a reduction gear and a differential gear (not shown). Further, a reduction gear for the rotating shaft of motor generator MG 2 may be further incorporated in power split mechanism 3. Further, the reduction gear ratio of this reduction gear may be configured to be switchable.
- Step-up converter 12 A has a reatto that has one end connected to power line PL 1 A.
- IG 8 elements 31, Q2A and 108 elements ⁇ 31 8, Q 2 A connected in parallel, respectively
- diodes D 1A and D 2 A Includes diodes D 1A and D 2 A.
- reactor L 1 A The other end of reactor L 1 A is connected to the emitter of I 08 element 01 A and the collector of I GBT element Q 2 A.
- the power sword of diode D 1A is connected to the collector of I GBT element Q 1 A, and the anode of diode D 1 A is connected to the emitter of I GB T element Q 1 A.
- the cathode of diode D 2 A is connected to the collector of I 08 element (32), and the anode of diode D 2 A is connected to the emitter of I G.BT element Q2A.
- Boost converter 12 B has a reactor L 1 B whose one end is connected to power supply line PLIB, and IG 8-elements 018, Q2B connected in series between power supply line PL 2 and ground line SL. It includes diodes D 1 B and D 2B connected in parallel to the choke elements ⁇ 218 and Q 2 B, respectively.
- reactor L 1 B The other end of reactor L 1 B is connected to the I 08 element (31 B emitter and I GBT element Q 2 B collector.
- the power sword of diode D 1 B is connected to the collector of I GBT element Q 1 B.
- the anode of diode D 1 B is connected to the emitter of I 08 element (31 B.
- the cathode of diode D 2 B is connected to the collector of I 08 element 02 B, and the anode of diode D 2 B is Connected to IGBT element Q 2 B emitter.
- Inverter 14 receives the boosted voltage from boost converters 12 A and 12 B, and drives motor generator MG 1 to move, for example, six engines 4. Inverter 14 also returns the electric power generated by motor generator MG 1 by the power transmitted from engine 4 to boost converter 12 A or 12 B. At this time, boost converter 12 A or 12 B It is controlled by the control device 30 so as to operate as a circuit.
- the damper 14 includes a U-phase arm 15, a V-phase arm 16, and a "W-phase arm 17.
- the U-phase arm 15, the V-phase arm 16, and the W-phase arm 17 are connected to the power line PL 2 and the ground line. Connected in parallel with SL.
- U-phase arm 15 is connected in series between power line PL 2 and ground line SL.
- I GBT elements Q3 and Q4 and diodes D3 and D4 connected in parallel with 108 elements ⁇ 33 and Q4, respectively.
- the power sword of diode D 3 is connected to the collector of I GBT element Q 3, and the anode of diode D 3 is connected to the lower element of I 08 (23 emitter.
- the power sword of diode D 4 is connected to I GBT element Q 4 Connected to the collector, the anode of diode D4 is connected to the emitter of IGBT element Q4.
- V-phase arm 16 includes diodes D 5 and D 6 connected in parallel with I GBT elements Q5 and Q6 and IGBT elements Q 5 and Q 6 connected in series between power line PL 2 and ground line SL, respectively. Including.
- the power sword of diode D5 is connected to the collector of I GBT element Q5, and the anode of diode D5 is connected to the emitter of IGBT element Q5.
- the power sword of diode D 6 is connected to the collector of I 08 element 06, and the anode of diode D 6 is connected to the emitter of I GBT element Q6.
- W-phase arm 17 consists of I GBT elements Q 7 and Q 8 connected in series between power line PL 2 and ground line SL, and diodes D 7 and Q 8 connected in parallel with 108 elements ⁇ 37 and Q 8 respectively. Including D 8.
- the power sword of diode D 7 is connected to the collector of I GBT element Q 7 and the anode of diode D 7 is connected to the emitter of I 08 element ⁇ 37.
- the power sword of the diode D 8 is connected to the collector of the I & 8 element (38), and the anode of the diode D 8 is connected to the emitter of the I GB T element Q 8.
- each phase arm is connected to one end of each phase coil of motor generator MG1. That is, motor generator MG 1 is a three-phase permanent magnet synchronous motor, and one end of each of the three coils of U, V, and W phases is connected to the midpoint.
- the other end of the U-phase coil is connected to the connection node of IGBT elements Q3 and Q4.
- the other end of the V-phase coil is connected to the connection node of IGBT elements Q5 and Q6.
- the other end of the W-phase coil is connected to the connection node of I GBT elements Q7 and Q8.
- Inverter 22 is connected to power line PL 2 and ground line SL. Inverter 22 converts the DC voltage output from step-up converters 12A and 12B into three-phase AC and outputs the same to motor generator MG2 that drives wheel 2. Inverter 22 returns the electric power generated in motor generator MG2 to boost converters 12A and 12B in accordance with regenerative braking. At this time, boost converters 12 A and 12 B are controlled by control device 30 so as to operate as a step-down circuit. Although the internal configuration of inverter 22 is not shown, it is the same as inverter 14, and detailed description will not be repeated.
- Controller 30 receives torque command values TR 1 and TR 2, motor rotation speeds MRN 1 and MR N2, voltages VB and VH, current IB values, motor current values MCRT 1 and MCRT 2, and start instruction I GON. Then, control device 30 outputs signals PWCA and PWCB instructing step-up instruction, step-down instruction and operation prohibition to step-up converters 12 A and 1.2 B. ,
- control device 30 outputs drive instruction PWMI 1 and regeneration instruction PWMC 1 to inverter 14.
- Drive instruction PWMI 1 is an instruction to convert the DC voltage, which is the output of boost converters 12 A and 12 B, into an AC voltage for driving motor generator MG 1.
- the regeneration instruction PWMC 1 is an instruction for converting the AC voltage generated by the motor generator MG1 into a DC voltage and returning it to the boost converters 12A, 12B side. '
- control device 30 outputs drive instruction PWM I 2 and regeneration instruction PWMC 2 to inverter 22.
- Drive instruction PWMI 2 is an instruction to convert a DC voltage into a current voltage for driving motor generator MG 2.
- Regenerative instruction PWMC 2 is an instruction for converting the AC voltage generated by motor generator MG 2 to a DC voltage and returning it to the boost converters 12 A and 12 B side.
- a power supply apparatus includes a boost converter 12 provided between batteries BA and BB, battery BA, and load circuit 23.
- A installed between battery BB and load circuit 23 Boost converter 12B, a first current path connected to the output of boost converter 12 A, and a second current path connected to the output of boost converter 12 B and connected to the first current path at junction N1 Current path, a third current path connected between the junction N1 and the load circuit 23, a current sensor 11 for detecting a current flowing through the third current path, and boost converters 12 A, 12 B And a control device 30 for monitoring the current detection value of the current sensor 11.
- the power line PL 2 is a connection of the first to third current paths. As shown later in FIG.
- control device 30 performs pulse width modulation control of boost converters 12 A and 12 B based on carrier signals FCA and FCB having the same frequency and strong phase difference. Control device 30 provides a time difference corresponding to the phase difference and samples the current detection value to obtain individual current values flowing through boost converters 12 A and 12 B.
- one end of the power supply device is connected to a connection point on the third current path, and the output from boost converter 12 A and the output from boost converter 12 B are smoothed and supplied to load circuit 23.
- a capacitor C 2 is further provided.
- the current sensor 11 detects the current flowing between the junction N 1 of the third current path and the connection point of the capacitor C 2.
- each of boost converters 12A, 12B includes a chopper circuit.
- FIG. 2 is a functional block diagram of the control device 30 of FIG.
- the control device 30 can be realized by software or hardware.
- control device 30 includes a boost converter control unit 131 that controls boost converters 12 A and 12B, and an MG 1 inverter control unit 1 32 that controls motor generator MG 1. And MG 2 inverter control unit 1 33 for controlling motor generator MG 2.
- boost converter control unit 131 In response to the start instruction IG ON, boost converter control unit 131 is in a state capable of boosting. Step-up converter control unit 131 outputs drive signals PWCA and PWCB for performing step-up and step-down instructions to step-up converters 12 ⁇ and '12B in FIG. 1, respectively.
- the inverter control unit 132 for MG1 instructs the inverter 14 to drive based on the 'torque command value ⁇ R 1 and the motor speed MRN 1 Outputs MI 1 and regeneration instruction PWMC 1.
- the MG 2 inverter control unit 1 3 3 outputs a drive instruction PWMI 2 and a regeneration instruction PWMC 2 to the inverter 22 based on the torque command value TR 2 and the motor rotational speed MRN 2.
- FIG. 3 is a functional block diagram illustrating the configuration of boost converter control section 131 in FIG.
- the boost converter control unit 131 can be realized by software or hardware.
- boost converter control unit 1 3 1 includes a generator drive required voltage calculation unit 152, a motor drive required voltage calculation unit 1 54, and a maximum value selection unit 1 56.
- the generator drive required voltage calculation unit 152 calculates the required voltage of the motor generator MG 1 based on 'torque command value TR 1 and rotation speed MRN 1'. This necessary voltage is higher than the induced voltage generated by the rotation of the motor generator MG 1.
- Motor drive required voltage calculation unit 154 calculates the required voltage of motor generator MG 2 based on torque command value TR 2 and rotation speed MRN 2. This necessary voltage is higher than the induced voltage generated by the rotation of motor generator MG2.
- the maximum selection unit 1 56 selects the maximum value from the required voltages calculated by the generator, the required drive voltage calculation unit 1 52 and the required motor drive voltage calculation unit 1 54, and sets the voltage V Outputs the target value VH *. As a result, it is possible to suppress loss and obtain a large output without performing field-weakening control.
- Boost converter control unit 131 further includes command value generation units 162 and 164.
- Command value generation unit 162 generates command value MA corresponding to boost converter 12 A based on voltage target value V ⁇ * and voltages V LA, V ⁇ and / or current I S (A).
- Command value generation unit 1 64 generates command value MB corresponding to boost converter 12 B based on voltages VLB, VH and / or current I S (B).
- the command value generators 162 and 164 operate in a current control mode in which control is performed by setting the input current of the corresponding boost converter to a target value, or in a voltage control mode in which control is performed by setting the output voltage as a target value.
- the command values MA and MB can be generated respectively.
- the command value generation unit 162 controls the current current IS so that the current IS (A) supplied from the battery BA to the boost converter 12 A is controlled to a predetermined target value.
- the command value MA is generated based on (A)
- the command value generation unit 1 6 4 controls the command value based on the voltages VLB and VH and the target value VH * so that the voltage VH is controlled to a predetermined target value.
- MB can be generated.
- the command value generation unit 16 2 may be controlled to operate in the voltage control mode
- the command value generation unit 16 4 may be controlled to operate in the current control mode.
- the boost converter control unit 1 3 1 further includes a carrier generation unit 1 6 6 that generates the carrier signal F CA, and a drive signal PWC for the boost converter 1 2 A based on the command: MA and the carrier signal F CA A modulation unit 1 7 0 that generates A, a phase inversion unit 1 68 that is a phase change unit that adds a phase difference to the carrier signal FCA and outputs a carrier signal FCB, a command value MB, and a carrier signal F CB And a modulation unit 1 7 2 for generating a drive signal PWCB for the boost converter 1 2 B.
- the phase difference to be changed by the phase inversion unit 1 68 is 1800 degrees.
- the carrier generator 1 6 6 generates a carrier signal F C A for generating a PWM signal.
- the carrier signal F CA is a triangular wave, and its period is set in consideration of the switching loss of the boost converters 12 A and 12 B.
- the phase inversion unit 1 6 8 receives the carrier signal F CA from the carrier generation unit 1 6 6 and outputs a carrier signal F CB whose phase is shifted by 180 degrees with respect to the carrier signal F C A. .
- the modulation unit 1700 can be realized by a comparator.
- the command value generation unit 1 6 2 is compared with the command value MA with the carrier signal FCA from the carrier generation unit 1 6 6, and the magnitude relation is compared. A signal PWCA that changes accordingly is generated.
- the modulation unit 1 7 2 can also be realized by a comparator, and the command value MB 1 from the command value generation unit 1 6 4 is compared with the carrier signal F CB from the phase inversion unit 1 6 8, and its magnitude relationship Generate a signal PWCB that changes according to.
- the signal PWCA is the carrier signal.
- the signal PWCB is generated based on the F CA and is generated based on the carrier signal F CB whose phase is shifted by 180 degrees with respect to the carrier signal FCA.
- the phase of the output current ripple of the boost converter 12 B is shifted by 180 degrees relative to the output current ripple of the boost converter 12 A.
- the capacitance (size) required for the capacitor C 2 can be reduced.
- the phase of the sound wave generated from the boost converters 12A and 12B is also inverted, noise from the entire boost converters 12A and 12B can be reduced.
- FIG. 4 is a diagram showing operation waveforms related to the control of the boost converter.
- carrier signal FC A generated by carrier generation unit 166 is a triangular wave.
- the carrier signal FCB output from the phase inverting unit 168 is a triangular wave having the same frequency as the carrier signal FCA and a phase shifted by 180 degrees.
- the case where the command values MA and MB both rise slowly is shown as an example.
- Signal PWCA goes high when carrier signal FC.A> command value MA, and goes low during other periods.
- the high level period of this signal PWCA corresponds to the 18-element ⁇ 32 conduction.
- the current I A flowing through the rear inductor L 1 A in Fig. 1 increases when the signal PWCA is high and decreases when the signal P W CA is low.
- phase of carrier signal FCB is inverted, it can be said that the current IB flowing through signal PWCB and rear reactor L 1 B is the same as signal PWCA and current IA, so the above description will not be repeated. .
- the current IS detected by the current sensor 11 is a value obtained by adding the current IAU and the current IBU.
- the current I S is equal to the value of the current I BU at times t 1, t 3, t 5, t 7, t 9, t i l and t 13. Further, the value of the current 13 is equal to the value of the current IBU at the time 12, t4, t6, t8, t10, t12.
- the current value of the boost converter 12 A can be found. Also, if the detection value of the current sensor 11 is sampled at the point (t l, t 3 ⁇ ) where the carrier signal FCB is minimum, the current value of the boost converter 12A can be obtained.
- the control device 30 in FIG. 1 can sample the detection value of the current sensor 11 based on the carrier signal FCA or FCB and know the currents of the two boost converters 12A and 12B.
- the control device 30 is a microcomputer
- the output of the current sensor 11 is received by the built-in A / D converter or an external A / D converter, and the timing is adjusted to the phase of the carrier frequency. It is only necessary to perform sampling in accordance with the deviation.
- one current sensor is provided closer to the load circuit than the junction of the current paths provided from the two voltage converters to the load circuit, and the carrier for driving the two voltage converters is provided.
- Two current values can be read from one current sensor by controlling the signal by shifting it and sampling the output of the current sensor with a time difference corresponding to the deviation of the carrier signal.
- the carrier signal is used after being shifted by 180 degrees, but the amount to be shifted may be other than 180 degrees.
- FIG. 5 is a functional block diagram showing a modification of the boost converter control unit shown in FIG.
- boost converter control unit 1 3 1 A includes generator drive required voltage calculation unit 152, motor drive required voltage calculation unit 154, maximum value selection unit 1 56, and command value generation unit 1 62. , 164 included. Since the operation of these components is the same as in FIG. 3, description thereof will not be repeated.
- Boost converter control section 131 A further includes a carrier generation section 166 that generates carrier signal FCA, and a modulation section that generates drive signal PWC A for boost converter 12 A based on command value MA and carrier signal FC A. 1 70, carrier signal FCA phase adjustment unit that adds a phase difference to the carrier signal FCB and outputs a carrier signal FCB 1 74, drive signal for boost converter 1 2B based on command value MB and carrier signal FCB And a modulation unit 172 for generating PWC B.
- the phase adjustment unit 174 adjusts the phase difference so that the rising timing of the drive signal PWCB coincides with the falling timing of the drive signal PWCA.
- Modulators 170 and 172 operate in the same manner as in FIG. 3, so the description will not be repeated.
- step-up converter control unit 131A the phase of carrier signal FCB is adjusted with respect to carrier signal FCA so that the rising timing of signal PWCB is synchronized with the falling timing of signal PWCA. This causes the output current ripple of converter 12 B to be out of phase with the output current ripple of boost converter 12 A, and the ripple current from converter 12 A and converter 12 B These ripple currents are continuously continuous.
- FIG. 6 is a waveform diagram of output currents of boost converters 12A and 12B in the second embodiment.
- currents IAU and IBU indicate output currents from the upper arms of boost converters 1 2 A and 12 B, respectively.
- the current I S indicates the total value of the currents I AU and I BU detected by the current sensor 11 1, that is, the total current supplied from the two boost converters 12 A and 12 B to the capacitor C 2.
- the rising timing of the current IBU is synchronized with the falling timing of the current IAU. Therefore, after the current I AU flows, the current I BU flows continuously.
- the ripple frequency of the total current IS is that of the first embodiment shown in FIG. Compared to the case, it is halved.
- the phase difference between the carrier signals FCA and FCB is adjusted so that the rising timing of the signal PWCB is synchronized with the falling timing of the signal PWCA, but the rising timing of the signal PWCA is the same as the falling timing of the signal PWCB.
- the phase difference between the carrier signals FCA and FCB may be adjusted to synchronize.
- the current value detected by the current sensor 11 is sampled according to this adjustment amount, the current value of the boost converter 12 A and the current value of the boost converter 12 B can be obtained using one current sensor. Can do. That is, in FIG. 9, the current I AU of the boost converter 12A can be detected by reading the current and I S at B intervals t21 and t23. Further, by reading the current IS at times t22 and t24, the value of the current IBU of the boost converter 12B can be detected. As described above, in the second embodiment, the phase difference between the carrier signals FCA and FCB is adjusted so that the rising timing of the signal PWCB is synchronized with the falling timing of the signal PWC A. 1 2 A current and step-up comparator 1 2 B are partially continuous in capacitor C 2. As a result, in addition to the effect obtained in the first embodiment, the effect that the ripple frequency of the total current IS is halved as compared with the first embodiment is also obtained.
- the current sensor is provided on the power supply line, but it may be provided on the ground line.
- the current sensor may be a Hall element, but when a shunt resistor is used, a merit in cost increases.
- FIG. 7 is a block diagram showing a configuration of the vehicle 200 according to the third embodiment.
- vehicle 2 0 0 includes batteries B A and B B and a boost converter 1 2
- A, 1 2 B, capacitor C 2, load circuit 2 3, current sensor 2 1 0, and control device 3 0 are included.
- the batteries BA, BB, boost converter 1 2 A, 1 2 B, capacitor C 2 and load circuit 2 3 are simply shown in FIG. 7, but have the configuration shown in FIG. The description will not be repeated.
- the current sensor 2 1 0 includes a shunt resistor 2 1 1 and an operational amplifier 2 1 2 that amplifies a potential difference caused by current flowing through the shunt resistor 2 1 1.
- the output of op amp 2 1 2 is sampled by controller 30.
- the power supply lines P L 2 from the boost converters 12 A and 12 B are connected to the capacitor C 2 and the load circuit 23 after joining.
- the ground line S L 1 from the boost converter 1 2 A,. 1 2 B is connected to one end of the shunt resistor 2 1 1 in the current sensor 2 10 after joining.
- the other end of the shunt resistor 2 1 1 is connected to the capacitor C 2 and the load circuit 23 by the ground line S L 2.
- one current sensor is provided closer to the load circuit 2 3 than the junction of the current paths provided from the two boost converters 1 2 A and 1 2 B to the load circuit 2 3. It has been.
- the control device 30 is controlled by shifting the carrier signals for driving the two boost converters ⁇ 2 A and 12 B, and providing a time difference corresponding to the deviation of the carrier signals to output the current sensor. Is used to read two current values from one current sensor.
- the current sensor 2 1 0 including the shunt resistor 2 1 1 is less expensive than the current sensor using the Hall element.
- the output of the current sensor 2 10 is input to a control device that is an ECU that is driven by a normal auxiliary battery voltage. If the current sensor 2 1 0 is installed in the power line PL 2, the difference between the auxiliary battery voltage (for example, 1 2 V) and the voltage of the power line PL 2 (for example, 2 0 to 6 0 0 V) is large. Therefore, it is necessary to make the operational amplifiers 2 1 2 expensive.
- the present invention is applied to a series / parallel type hybrid system in which the power of the engine can be divided and transmitted to the axle and the generator by the power split mechanism.
- the present invention is applied to a series type hybrid vehicle in which an engine is used only for driving a generator and an axle driving force is generated only by a motor using electric power generated by the generator, or an electric vehicle that runs only by a motor. Is also applicable.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/086,121 US7755213B2 (en) | 2006-08-02 | 2007-06-25 | Power supply device and vehicle equipped with the same |
| CN2007800015024A CN101361253B (zh) | 2006-08-02 | 2007-06-25 | 电源装置和装有该装置的车辆 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-210828 | 2006-08-02 | ||
| JP2006210828A JP4356715B2 (ja) | 2006-08-02 | 2006-08-02 | 電源装置、および電源装置を備える車両 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008015863A1 true WO2008015863A1 (en) | 2008-02-07 |
Family
ID=38997045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/063190 Ceased WO2008015863A1 (en) | 2006-08-02 | 2007-06-25 | Electric power supply apparatus and vehicle having electric power supply apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7755213B2 (ja) |
| JP (1) | JP4356715B2 (ja) |
| CN (1) | CN101361253B (ja) |
| WO (1) | WO2008015863A1 (ja) |
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|---|---|---|---|---|
| US20120299378A1 (en) * | 2008-12-02 | 2012-11-29 | Robert Dean King | Auxiliary drive apparatus and method of manufacturing same |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4356715B2 (ja) | 2009-11-04 |
| US20090160248A1 (en) | 2009-06-25 |
| US7755213B2 (en) | 2010-07-13 |
| CN101361253A (zh) | 2009-02-04 |
| JP2008042983A (ja) | 2008-02-21 |
| CN101361253B (zh) | 2011-02-02 |
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