CN101549631B - Power system of simple electric vehicle operation method thereof - Google Patents

Power system of simple electric vehicle operation method thereof Download PDF

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Publication number
CN101549631B
CN101549631B CN2009101168121A CN200910116812A CN101549631B CN 101549631 B CN101549631 B CN 101549631B CN 2009101168121 A CN2009101168121 A CN 2009101168121A CN 200910116812 A CN200910116812 A CN 200910116812A CN 101549631 B CN101549631 B CN 101549631B
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mode
torque
control system
motor
electric machine
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CN101549631A (en
Inventor
罗晓
陈立冲
王瑛
宋波
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Chery Automobile Co Ltd
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SAIC Chery Automobile Co Ltd
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Priority to CN2009101168121A priority Critical patent/CN101549631B/en
Publication of CN101549631A publication Critical patent/CN101549631A/en
Priority to PCT/CN2010/072841 priority patent/WO2010133156A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2220/00Electrical machine types; Structures or applications thereof
    • B60L2220/10Electrical machine types
    • B60L2220/14Synchronous machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/52Drive Train control parameters related to converters
    • B60L2240/525Temperature of converter or components thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2207/00Indexing scheme relating to controlling arrangements characterised by the type of motor
    • H02P2207/05Synchronous machines, e.g. with permanent magnets or DC excitation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The present invention relates to a power system for simple electric vehicle and operational method thereof, including an AC permanent magnet synchronous machine (PMSM) and a motor control system, wherein the motor control system employs a digital signal processing (DSP) chip; the power system is controlled to switch among six modes of a inhibited mode, a zero torque mode, a speed mode, a torque mode, a alarm mode and a fault mode through a entire-car controller.

Description

A kind of power system of pure electric vehicle and operating method thereof
Technical field
The present invention relates to the car drive system, be specifically related to a kind of power system and operating method thereof of pure electric vehicle.
Background technology
At present, people's pay attention to day by day is to the protection of environment and the use effectively and reasonably of the energy.Therefore, pure electric automobiles efficient, energy-saving and environmental protection become one of China Automobile Industry trend.Pure electric drive system can be accomplished the purpose of low energy consumption and zero-emission, has market-oriented prospect.Use in car; be subject to the restriction of installing space; volume size to motor driven systems requires harsh; and in the prior art; can't realize the control and protection to power drive system; thereby also just can't guarantee the normal reliable operation of pure electric sedan power drive system, guarantee simultaneously the traveling comfort of driving.
Summary of the invention
The power system and the How It Works thereof that the object of the invention is to a kind of pure electric vehicle, comprise AC permanent magnet synchronous motor PMSM and electric machine control system, wherein, electric machine control system adopts digital signal processing digital signal processing (Digital Signal Processing) dsp chip; Control conversion between totally six kinds of patterns by the vehicle control unit controls power system at prohibited mode, zero torque mode, velocity mode, torque mode, alarm mode, failure mode.
The general sine-wave permanent magnet synchronous motor that adopts in the pure electric automobile drive system, it has reliable, the remarkable advantage such as volume is little, quality is light, loss is few, efficient is high and shape and size are versatile and flexible, can not only drive car load, and can reclaim by braking energy battery is charged, in this pure electric sedan electric machine control system, adopt the dsp chip of Ti company, the high-speed computation ability of DSP and efficient control ability towards motor are integrated in one.In order to guarantee the normal reliable operation of pure electric vehicle motor driven systems, six kinds of operation mode of operations have been adopted.
Concrete technical scheme is as follows:
A kind of power system of pure electric vehicle comprises AC permanent magnet synchronous motor PMSM and electric machine control system, and wherein, electric machine control system adopts digital signal processing digital signal processing (Digital SignalProcessing) dsp chip.
Described AC permanent magnet synchronous motor can carry out that normal torque drive, low speed are advanced, regenerating braking energy reclaims, driving power is provided.
Thereby electric machine control system is controlled and is realized that described normal torque drive, low speed are advanced, regenerating braking energy reclaims, driving power is provided.
Described AC permanent magnet synchronous motor has six kinds of operational modes, is respectively: forbid, zero moment of torsion, speed, moment of torsion, fault and alarm mode.
Conversion is controlled and controlled to entire car controller to described six kinds of operational modes.
A kind of operating method of power system of pure electric vehicle is characterized in that, controls conversion between totally six kinds of patterns by the vehicle control unit controls power system at prohibited mode, zero torque mode, velocity mode, torque mode, alarm mode, failure mode.
Under prohibited mode, PWM door driver output and inverter forbid, fault all is eliminated; Less than demarcating restriction, control system is removed the locking of electric current hardware when the electric current that detects; In the scope that the temperature that detects is being demarcated, remove the locking of excess temperature hardware; After normally powering on, electric machine control system at first enters prohibited mode.
Zero torque mode is the switch transition pattern of velocity mode and torque mode, under zero torque mode, and the inverter normal operation, motor is provided zero moment of torsion output by control, when high speed, needs the weak magnetoelectricity in the motor winding to flow to suppress counter electromotive force.
Under velocity mode, vehicle is in the low cruise state, is mainly used in gear and is in D Drive, the vehicle start when E-gas is zero; Electric machine control system control loop regulating electric machine moment of torsion is to reach the speed that makes motor operate in appointment, and this moment of torsion can not become negative value, and when motor is driven to than requiring the higher rotating speed of speed, it is zero that control torque is clamped down on.
Under torque mode, when the car load driven, motor operates in this pattern, and this pattern provides driving torque and regenerative braking capability, and it is the core of motor vector controlled that moment of torsion is controlled, to the CAN information of motor demand torque instruction from entire car controller; The Motor torque that obtains when electric machine control system provides torque peak over motor, and this torque command is clamped down on is maximum torque; For offsetting counter electromotive force to the impact of motor, can reach the moment of torsion of demand, use weak magnetic control system when high speed, the electric machine control system control loop is regulated moment of torsion and is remained to command value.
Under alarm mode, inverter normal operation, when electric machine control system detect motor stator and inverter temperature in a limited range time moment of torsion be limited in certain scope.
Under failure mode, inverter and PWM door drive and all are under an embargo.
In sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault occur one or several, electric machine control system enters failure mode, and entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
Under the motor present mode, the input and output that initialization is all, initialization CAN communication, electric machine control system enters prohibited mode.
Under prohibited mode, to detect whole vehicle state normal when entire car controller, and/or electric machine control system to detect the electric system state normal, and/or entire car controller allows inverter normal operation and request to enter zero torque mode, and/or gear is in neutral gear, enters zero torque mode.
Under zero torque mode, when gear is in D Drive, and/or chaufeur does not operate efp, and/or entire car controller request motor enters the slow speed of revolution running state, and/or car load low speed starting, and/or chaufeur operates E-gas, and entire car controller request electric machine control system enters zero torque mode, and entire car controller request electric machine control system enters torque mode after entering zero torque mode.
Under zero torque mode/velocity mode, when gear is in D Drive or reverse, and/or chaufeur operates E-gas, and entire car controller request electric machine control system enters torque mode; When motor temperature or inverter temperature reach certain temperature range, torque request is limited, prevent that motor or inverter excess temperature from making system enter failure mode.
Compare with present prior art; the present invention is by the control and protection of the realization of the switching between six kinds of operational modes of electric machine control system to power drive system; by six kinds of operational modes to the pure electric sedan electric machine control system; realize the normal reliable operation of pure electric sedan power drive system, guarantee simultaneously the traveling comfort of driving.
Description of drawings
Fig. 1 is pattern conversion schematic diagram;
In figure: 1. motor present mode, 2. prohibited mode, 3. 0 torque mode, 4. velocity mode, 5. torque mode, 6. failure mode
The specific embodiment
The below describes the present invention with reference to the accompanying drawings, and it is a kind of preferred embodiment in numerous embodiments of the present invention.
In the present embodiment, pure electric sedan system is to adopt AC permanent magnet synchronous motor (PMSM), and it mainly provides four kinds of functions:
1, normal torque drive;
2, low speed is advanced;
3, regenerating braking energy reclaims;
4, provide driving power.
The realization of these functions realizes by the control module of motor.In this pure electric sedan system, motor has following six kinds of operational modes, and the control conversion between these six kinds of patterns realizes by the instruction of entire car controller.
(1) forbid
(2) zero moment of torsion
(3) speed
(4) moment of torsion
(5) fault
(6) report to the police
Zero moment of torsion wherein, speed, moment of torsion, reporting to the police is main actv. mode.Forbid with failure mode under inverter forbid.Six kinds of patterns are specific as follows:
1. electric machine control system prohibited mode
PWM door driver output and inverter are forbidden under prohibited mode.Any fault all is eliminated; If the electric current that detects is less than demarcating restriction, control system can be removed the locking of electric current hardware; If the temperature that detects in the scope of demarcating, is removed the locking of excess temperature hardware.After normally powering on, electric machine control system at first can enter prohibited mode.
2. zero torque mode
Inverter can work, and motor is provided zero moment of torsion output by control, when high speed, needs the weak magnetoelectricity in the motor winding to flow to suppress counter electromotive force.Therefore zero torque mode is velocity mode and torque mode switch transition pattern, for the motor operation provides reliable guarantee.Pattern conversion is illustrated in fig. 1 shown below: discontented foot Fig. 1 transduction pathway all be considered to fault.
3. velocity mode
This pattern only is used in vehicle low cruise state, is mainly used in gear and is in D Drive, the vehicle start when E-gas is zero; Motor control module control loop regulating electric machine moment of torsion is to reach the speed that makes motor operate in appointment, and this moment of torsion can not become negative value, if motor is driven to when requiring the higher rotating speed of speed, it is zero that control torque will be clamped down on.
4. torque mode
In the situation of car load driven, motor operates in torque mode.This pattern provides driving torque and regenerative braking capability, and it is the core of this motor vector controlled that moment of torsion is controlled; To the CAN information of motor demand torque instruction from entire car controller; Provide torque peak if the Motor torque that electric machine control system obtains surpasses motor, this torque command can be clamped down on is maximum torque.In order to offset counter electromotive force to the impact of motor, can reach the moment of torsion of demand, use field weakening control method when high speed.The electric machine control system control loop can be regulated moment of torsion and remain to command value.
5. alarm mode
Inverter normal operation under this pattern; When electric machine control system detect motor stator and inverter temperature in a certain limited range the time torque request can be limited in certain scope.
6. failure mode
Inverter and PWM door drive and all are under an embargo under this pattern.
Failure mode is to be used for protecting electric driving control system hardware and motor for the system failure such as: sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault etc.If DSP detects the fault relevant to controller hardware.Such as: inverter is made mistakes, door driving power fault etc.DSP can control inverter and can not be produced the driving signal.DSP can pass to entire car controller to breakdown signal by CAN, and entire car controller can be made corresponding action until system reset to hardware.
By reference to the accompanying drawings 1 and six kind of pattern, its conversion regime and condition are as follows:
A. current operation electric machine control system program; The input and output that initialization is all; Initialization CAN communication; Electric machine control system enters prohibited mode; Any fault all is eliminated; If the electric current that detects is less than demarcating restriction, control system can be removed the locking of electric current hardware; If the temperature that detects in the scope of demarcating, is removed the locking of excess temperature hardware.
B. entire car controller detection whole vehicle state is normal; It is normal that electric machine control system detects the electric system state; Entire car controller allows inverter normal operation and request to enter zero torque mode; Gear is in neutral gear.
C. gear is in D Drive; Chaufeur does not operate efp; Entire car controller request motor enters the slow speed of revolution running state; The starting of car load low speed; When chaufeur operates E-gas, entire car controller request electric machine control system enters zero torque mode, successfully enter zero torque mode after entire car controller request electric machine control system enter torque mode.
D. gear is in D Drive or reverse; Chaufeur operates E-gas; Entire car controller request electric machine control system enters torque mode; After motor temperature or inverter temperature reach certain temperature range, torque request is limited, prevent that motor or inverter excess temperature from making system enter failure mode.
E. occur in sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault situation, electric machine control system enters failure mode; Entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
F. occur in sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault situation, electric machine control system enters failure mode; Entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
G. occur in sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault situation, electric machine control system enters failure mode; Entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
H. occur in sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault situation, electric machine control system enters failure mode; Entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
The above is exemplarily described the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.

Claims (6)

1. the operating method of the power system of a pure electric vehicle, it is characterized in that, the power system of described pure electric vehicle comprises AC permanent magnet synchronous motor PMSM and electric machine control system, wherein, described electric machine control system adopts the digital signal processing dsp chip, thereby it is controlled and realizes that normal torque drive, low speed are advanced, regenerating braking energy reclaims, driving power is provided; Described AC permanent magnet synchronous motor can carry out that normal torque drive, low speed are advanced, regenerating braking energy reclaims, driving power is provided, it has six kinds of operational modes, be respectively: forbid, zero moment of torsion, speed, moment of torsion, fault and alarm mode, conversion is controlled and controlled to entire car controller to described six kinds of operational modes;
Control conversion between totally six kinds of patterns by the vehicle control unit controls power system at prohibited mode, zero torque mode, velocity mode, torque mode, alarm mode, failure mode, wherein,
Under prohibited mode, PWM door driver output and inverter forbid, fault all is eliminated; Less than demarcating restriction, control system is removed the locking of electric current hardware when the electric current that detects; In the scope that the temperature that detects is being demarcated, remove the locking of excess temperature hardware; After normally powering on, electric machine control system at first enters prohibited mode;
Zero torque mode is the switch transition pattern of velocity mode and torque mode, under zero torque mode, and the inverter normal operation, motor is provided zero moment of torsion output by control, when high speed, needs the weak magnetoelectricity in the motor winding to flow to suppress counter electromotive force;
Under velocity mode, vehicle is in the low cruise state, is mainly used in gear and is in D Drive, the vehicle start when E-gas is zero; Electric machine control system control loop regulating electric machine moment of torsion is to reach the speed that makes motor operate in appointment, and this moment of torsion can not become negative value, and when motor is driven to than requiring the higher rotating speed of speed, it is zero that control torque is clamped down on;
Under torque mode, when the car load driven, motor operates in this pattern, and this pattern provides driving torque and regenerative braking capability, and it is the core of motor vector controlled that moment of torsion is controlled, to the CAN information of motor demand torque instruction from entire car controller; The Motor torque that obtains when electric machine control system provides torque peak over motor, and this torque command is clamped down on is maximum torque; For offsetting counter electromotive force to the impact of motor, can reach the moment of torsion of demand, use weak magnetic control system when high speed, the electric machine control system control loop is regulated moment of torsion and is remained to command value;
Under alarm mode, inverter normal operation, when electric machine control system detect motor stator and inverter temperature in a limited range time moment of torsion be limited in certain scope;
Under failure mode, inverter and PWM door drive and all are under an embargo.
2. the operating method of the power system of pure electric vehicle as claimed in claim 1, it is characterized in that, in sensor fault, door driving malfunction, fault of converter, excess temperature fault, overvoltage fault, over current fault occur one or several, electric machine control system enters failure mode, and entering after failure mode must be by resetting to realize the removing to fault to electric machine control system.
3. the operating method of the power system of pure electric vehicle as claimed in claim 1, is characterized in that, under the motor present mode, and the input and output that initialization is all, initialization CAN communication, electric machine control system enters prohibited mode.
4. the operating method of the power system of pure electric vehicle as claimed in claim 1, it is characterized in that, under prohibited mode, to detect whole vehicle state normal when entire car controller, and/or electric machine control system detection electric system state is normal, and/or entire car controller allows inverter normal operation and request to enter zero torque mode, and/or gear is in neutral gear, enters zero torque mode.
5. the operating method of the power system of pure electric vehicle as claimed in claim 1, it is characterized in that, under zero torque mode, when gear is in D Drive, and/or chaufeur does not operate efp, and/or entire car controller request motor enters the slow speed of revolution running state, and/or car load low speed starting, and/or chaufeur operates E-gas, entire car controller request electric machine control system enters zero torque mode, and entire car controller request electric machine control system enters torque mode after entering zero torque mode.
6. the operating method of the power system of pure electric vehicle as claimed in claim 1, it is characterized in that, under zero torque mode/velocity mode, when gear is in D Drive or reverse, and/or chaufeur operates E-gas, and entire car controller request electric machine control system enters torque mode; When motor temperature or inverter temperature reach certain temperature range, torque request is limited, prevent that motor or inverter excess temperature from making system enter failure mode.
CN2009101168121A 2009-05-18 2009-05-18 Power system of simple electric vehicle operation method thereof Active CN101549631B (en)

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PCT/CN2010/072841 WO2010133156A1 (en) 2009-05-18 2010-05-17 Power system for pure electric vehicle and operation method thereof

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CN201130919Y (en) * 2007-11-23 2008-10-08 吉林市北华航天科技有限公司 Drive device for motor of novel electric vehicle

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