CN102991374A - Passive rectification protection system of electric vehicle motor controller - Google Patents
Passive rectification protection system of electric vehicle motor controller Download PDFInfo
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- CN102991374A CN102991374A CN2012105439533A CN201210543953A CN102991374A CN 102991374 A CN102991374 A CN 102991374A CN 2012105439533 A CN2012105439533 A CN 2012105439533A CN 201210543953 A CN201210543953 A CN 201210543953A CN 102991374 A CN102991374 A CN 102991374A
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- 239000013078 crystal Substances 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
Abstract
The invention relates to a passive rectification protection system of an electric vehicle motor controller. The passive rectification protection system comprises a motor controller, wherein the motor controller comprises an IGBT (Insulated Gate Bipolar Transistor) power module which is internally provided with a high-speed diode, an IGBT protection circuit module, an IGBT drive module and a DSP (Digital Signal Processor) control module, a current sensor and an electronic switching device are arranged on any two phases in a three-phase cable between the IGBT power module and a drive motor in a serial connection way, the current sensor is used for transferring a current signal to the DSP control module, and meanwhile, the DSP control module outputs a level signal for controlling on-off of the electronic switching device. With the adoption of the passive rectification protection system, the problem that the traditional electric vehicle motor controller is easy to damage in the state of passive rectification of a whole vehicle is solved, thus improving the using reliability of the motor controller; and the passive rectification protection system can be widely applied to the field of the electric vehicle motor controllers.
Description
Technical field
The present invention relates to a kind of passive rectification protection system, relate in particular to the passive rectification protection system of a kind of electric vehicle motor controller.
Background technology
Along with the fast development of electronlmobil, also more and more important to properties of product and the reliability requirement of its kernel component.Electric machine controller is as the control unit of power assembly of electric automobile, and its properties of product will directly affect the performance figure of car load.On electronlmobil; electric machine controller is not only as motor-driven inverter; the rectifier that also reclaims as braking energy; existing controller protection and IGBT guard method have enough guaranteed the safe and reliable operation of electric machine controller when as the actuator purposes; but the output of IGBT power model is all just turn-offed in the final measure of existing protection scheme during as the rectifier purposes; but the IGBT power model is because the existence of built-in high speed diode; electric machine controller still can carry out passive rectification; if the electric current of passive rectification will damage the IGBT module when surpassing the current limit of high speed diode, cause the electric machine controller disabler.
Summary of the invention
The purpose of this invention is to provide the passive rectification protection system of a kind of electric vehicle motor controller; solve existing electric vehicle motor controller easy impaired problem of electric machine controller under the passive rectification state of car load, thereby improve the reliability of service of electric machine controller.
The technical solution adopted for the present invention to solve the technical problems is: the passive rectification protection system of a kind of electric vehicle motor controller, comprise electric machine controller, electric machine controller comprises that inside is provided with the IGBT power model of high speed diode, IGBT protective circuit module, the IGBT driver module, the DSP control module, described IGBT power model links to each other with the high voltage bus both positive and negative polarity respectively at the drive motor three phase circuit, the signal of IGBT power model flows to the DSP control module by IGBT protective circuit module, simultaneously, DSP control module output pwm signal is passed to the IGBT power model after the IGBT driver module is processed, IGBT protective circuit module can send simultaneously instruction and drive the driving signal output that mould is used for control IGBT protective circuit module to IGBT; Any two-phase in the threephase cable between IGBT power model and drive motor is connected and is provided with current sensor and electronic switching device, described current sensor passes to the DSP control module with current signal, simultaneously, the output of DSP control module is used for the level signal of control electronic switching device break-make.
Described DSP control module is provided with a current threshold that is lower than the high speed diode conveyance capacity, when the phase current values that detects during more than or equal to this threshold value, the DSP control module is sent open command to electronic switching device, and electronic switching device disconnection IGBT power model is connected with drive motor.
When car load is carried out braking energy recovery operating mode, the IGBT power model carries out the active rectification to drive motor brake power generating energy, if this moment, IGBT protective circuit module detected IGBT power model operation irregularity, forbid that it drives signal output will for the instruction of IGBT drive circuit module, IGBT protective circuit module feeds back to the DSP control module with failure message simultaneously, the DSP control module stops pwm signal output after receiving failure message, and the IGBT power model enters passive rectification mode of operation; The DSP control module can arrange a current threshold that is lower than the high speed diode conveyance capacity, the current value that detects when current sensor is during more than or equal to this threshold value, the DSP control module is sent open command to electronic switching device, electronic switching device disconnection IGBT power model is connected with drive motor, makes the IGBT power model enter off position from passive rectification mode of operation.
Described IGBT power model operation irregularity comprise IGBT power model excess temperature, IGBT power model bus overvoltage or under-voltage, IGBT power model upper and lower bridge arm straight-through, IGBT power model overcurrent, IGBT power module driving circuit fault.
Preferably, described electronic switching device is high-voltage relay; Electronic switching device is bipolar-type power crystal switch pipe.
Beneficial effect of the present invention: current signal is passed to the DSP control module timely by increasing by two current sensors; the break-make that the DSP control module is controlled two electronic switching devices realizes the overcurrent protection to electric machine controller; improve the service life of electric machine controller; and simple in structure, cost is low.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Description of drawings
Fig. 1 is schematic circuit diagram of the present invention.
The specific embodiment
The passive rectification protection system of a kind of electric vehicle motor controller, as described in Figure 1, comprise electric machine controller, electric machine controller comprises that inside is provided with the IGBT power model of high speed diode, IGBT protective circuit module, the IGBT driver module, the DSP control module, described IGBT power model links to each other with the high voltage bus both positive and negative polarity respectively at the drive motor three phase circuit, the signal of IGBT power model flows to the DSP control module by IGBT protective circuit module, simultaneously, DSP control module output pwm signal is passed to the IGBT power model after the IGBT driver module is processed, IGBT protective circuit module can send simultaneously instruction and drive the driving signal output that mould is used for control IGBT protective circuit module to IGBT; Any two-phase in the threephase cable between IGBT power model and drive motor is connected and is provided with current sensor and electronic switching device, described current sensor passes to the DSP control module with current signal, simultaneously, the output of DSP control module is used for the level signal of control electronic switching device break-make.
Described DSP control module is provided with a current threshold that is lower than the high speed diode conveyance capacity, when the phase current values that detects during more than or equal to this threshold value, the DSP control module is sent open command to electronic switching device, and electronic switching device disconnection IGBT power model is connected with drive motor.Described electronic switching device is high-voltage relay; Electronic switching device is bipolar-type power crystal switch pipe.
When car load is carried out braking energy recovery operating mode, the IGBT power model carries out the active rectification to drive motor brake power generating energy, if this moment, IGBT protective circuit module detected IGBT power model operation irregularity, forbid that it drives signal output will for the instruction of IGBT drive circuit module, IGBT protective circuit module feeds back to the DSP control module with failure message simultaneously, the DSP control module stops pwm signal output after receiving failure message, and the IGBT power model enters passive rectification mode of operation; The DSP control module can arrange a current threshold that is lower than the high speed diode conveyance capacity, the current value that detects when current sensor is during more than or equal to this threshold value, the DSP control module is sent open command to electronic switching device, electronic switching device disconnection IGBT power model is connected with drive motor, makes the IGBT power model enter off position from passive rectification mode of operation.Thereby the protection electric machine controller can owing to the excessive damage that causes of passive rectified current, not improve the reliability of its use.
Described IGBT power model operation irregularity comprise IGBT power model excess temperature, IGBT power model bus overvoltage or under-voltage, IGBT power model upper and lower bridge arm straight-through, IGBT power model overcurrent, IGBT power module driving circuit fault.
Claims (6)
1. passive rectification protection system of electric vehicle motor controller, comprise electric machine controller, electric machine controller comprises that inside is provided with the IGBT power model of high speed diode, IGBT protective circuit module, the IGBT driver module, the DSP control module, described IGBT power model links to each other with the high voltage bus both positive and negative polarity respectively at the drive motor three phase circuit, the signal of IGBT power model flows to the DSP control module by IGBT protective circuit module, simultaneously, DSP control module output pwm signal is passed to the IGBT power model after the IGBT driver module is processed, IGBT protective circuit module can send simultaneously instruction and drive the driving signal output that mould is used for control IGBT protective circuit module to IGBT; It is characterized in that: any two-phase in the threephase cable between IGBT power model and drive motor is connected and is provided with current sensor and electronic switching device, described current sensor passes to the DSP control module with current signal, simultaneously, the output of DSP control module is used for the level signal of control electronic switching device break-make.
2. the passive rectification protection system of electric vehicle motor controller according to claim 1; it is characterized in that: described DSP control module is provided with a current threshold that is lower than the high speed diode conveyance capacity; when the phase current values that detects during more than or equal to this threshold value; the DSP control module is sent open command to electronic switching device, and electronic switching device disconnection IGBT power model is connected with drive motor.
3. the passive rectification protection system of electric vehicle motor controller according to claim 1 and 2, it is characterized in that: when car load is carried out braking energy recovery operating mode, the IGBT power model carries out the active rectification to drive motor brake power generating energy, if this moment, IGBT protective circuit module detected IGBT power model operation irregularity, forbid that it drives signal output will for the instruction of IGBT drive circuit module, IGBT protective circuit module feeds back to the DSP control module with failure message simultaneously, the DSP control module stops pwm signal output after receiving failure message, and the IGBT power model enters passive rectification mode of operation; The DSP control module can arrange a current threshold that is lower than the high speed diode conveyance capacity, the current value that detects when current sensor is during more than or equal to this threshold value, the DSP control module is sent open command to electronic switching device, electronic switching device disconnection IGBT power model is connected with drive motor, makes the IGBT power model enter off position from passive rectification mode of operation.
4. the passive rectification protection system of electric vehicle motor controller according to claim 3 is characterized in that: described IGBT power model operation irregularity comprise IGBT power model excess temperature, IGBT power model bus overvoltage or under-voltage, IGBT power model upper and lower bridge arm straight-through, IGBT power model overcurrent, IGBT power module driving circuit fault.
5. the passive rectification protection system of electric vehicle motor controller according to claim 1, it is characterized in that: described electronic switching device is high-voltage relay.
6. the passive rectification protection system of electric vehicle motor controller according to claim 1, it is characterized in that: described electronic switching device is bipolar-type power crystal switch pipe.
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| CN201210543953.3A CN102991374B (en) | 2012-12-15 | 2012-12-15 | A kind of passive rectification protection system of electric vehicle motor controller |
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| CN201210543953.3A CN102991374B (en) | 2012-12-15 | 2012-12-15 | A kind of passive rectification protection system of electric vehicle motor controller |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199370A (en) * | 2014-09-18 | 2014-12-10 | 奇瑞汽车股份有限公司 | Automotive motor controller security monitoring circuit and control method thereof |
| CN104442444A (en) * | 2013-09-18 | 2015-03-25 | 比亚迪股份有限公司 | Motor control system for electric vehicles and electric vehicle with same |
| CN104627019A (en) * | 2015-01-30 | 2015-05-20 | 柳州市同进汽车零部件制造有限公司 | Electric automobile motor control device |
| CN105182855A (en) * | 2015-09-23 | 2015-12-23 | 上海大学 | Automobile controller for failure protection of DSP chip and control method thereof |
| CN107636251A (en) * | 2015-05-13 | 2018-01-26 | 通用电气(Ge)贝克休斯有限责任公司 | Active rectifier for down-hole application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104442444A (en) * | 2013-09-18 | 2015-03-25 | 比亚迪股份有限公司 | Motor control system for electric vehicles and electric vehicle with same |
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| CN107636251A (en) * | 2015-05-13 | 2018-01-26 | 通用电气(Ge)贝克休斯有限责任公司 | Active rectifier for down-hole application |
| CN105182855A (en) * | 2015-09-23 | 2015-12-23 | 上海大学 | Automobile controller for failure protection of DSP chip and control method thereof |
| CN105182855B (en) * | 2015-09-23 | 2018-04-06 | 上海大学 | The automobile controller and its control method protected when dsp chip fails |
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| CN102991374B (en) | 2017-07-21 |
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Owner name: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SAIC CHERY AUTOMOBILE CO., LTD. Effective date: 20150702 |
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Effective date of registration: 20150702 Address after: 241000 Yijiang, Anhui Province, Jin Hua Road, No. 226, South Road, No. Applicant after: New-energy automobile Technology Co., Ltd. of Cherry Address before: 241000 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road Applicant before: Saic Chery Automobile Co., Ltd. |
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Address after: 241000 No. 226 Jin Hua Nan Road, Yijiang hi tech Industrial Development Zone, Anhui, Wuhu Patentee after: Chery New Energy Automobile Co.,Ltd. Address before: 241000 No. 226 Hua Jin South Road, Yijiang District, Anhui, Wuhu Patentee before: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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