CN104734576A - Controller of permanent magnetic synchronous motor for electric vehicle and vehicle-mounted system - Google Patents
Controller of permanent magnetic synchronous motor for electric vehicle and vehicle-mounted system Download PDFInfo
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- CN104734576A CN104734576A CN201310718938.2A CN201310718938A CN104734576A CN 104734576 A CN104734576 A CN 104734576A CN 201310718938 A CN201310718938 A CN 201310718938A CN 104734576 A CN104734576 A CN 104734576A
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
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- 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
- B60L15/20—Methods, 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0805—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for synchronous motors
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/24—Arrangements for stopping
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a controller of a permanent magnetic synchronous motor for an electric vehicle and a vehicle-mounted system. The controller comprises a current collecting device, a processor, a driving circuit, a power device, a switching value control device and a switch power source device. The current collecting device is used for collecting and processing the alternating current output by the motor. The processor is connected with the current collecting device and used for controlling the alternating current through a comparison result obtained after comparison processing is conducted through a reference parameter to generate driving signals. The driving circuit is connected with the processor and used for receiving and processing the driving signal to output control signals. The power device is connected with the driving circuit and used for receiving the control signals to control the on-off of an MOS power pipe in the power device. The switching value control device is connected with the power device through a closing switch and a braking switch and used for controlling the starting and braking of the motor. The switch power source device is connected with the driving circuit and used for providing electric energy. By means of the controller, the permanent magnetic synchronous motor controller high in precision and large in range can be achieved.
Description
Technical field
The present invention relates to field of power, in particular to a kind of controller, onboard system of electric vehicle permagnetic synchronous motor.
Background technology
Along with third generation rare earth permanent-magnetic material that is cheap, function admirable is developed successfully, the development of magneto and its control system is promoted greatly.Along with the raising of magnetism of material energy, the decline of permanent magnetic material price, and the appearance of novel permanent magnetic material, permagnetic synchronous motor obtains the concern of increasing Technological research personnel.Permagnetic synchronous motor has that structure is simple, efficiency is high, volume is little, torque current than high, moment of inertia is low, power factor is high, be easy to the features such as heat radiation and maintaining.Its research and extension application receives the most attention of people.At present, the application of permagnetic synchronous motor is no longer confined to the occasion of constant frequency, constant rotational speed, and the Alternating Current Governor System be made up of permagnetic synchronous motor has been widely used in the speed regulator of low capacity, servo occasion.Wherein, show outstanding with permanent magnet synchronous motor vector control system because having high accuracy, the on a large scale characteristic such as speed governing or positioning control.Therefore, permanent magnet synchronous motor vector control system has become the primary study direction of Small And Medium Capacity AC speed regulating and drive system, has vast potential for future development.
At energy scarcity, worldwide starts today of common concern energy-saving consumption-reducing, and people are to high efficiency, and energy-saving control system has had higher demand.And the improving constantly of permanent magnetic material performance, the continuous decline of price, that control system for permanent-magnet synchronous motor is had is larger wider puts stage to good use.It further applies simultaneously having had air-conditioning, ventilation and water system, especially effort rank among automobile industry, and steadily occupy a ground.Permagnetic synchronous motor has less profile and light quality, is applicable to the feature of electric automobile limited space; Efficiency is high, and the following operation of base speed does not need exciting current; Loss is little, does not need exciting current so do not have copper loss of rotor to consume due to rotor; Dynamic property is good, and slow-revving time, Driving Torque is comparatively large, is applicable to the Acceleration of starting of automobile.Comprehensive above-mentioned viewpoint, permagnetic synchronous motor extremely control system, because of its excellent characteristic, has become the main flow motor in drive system of electric automobile, becomes strong competitor on electric automobile market.At present, Small And Medium Capacity control system for permanent-magnet synchronous motor is widely used in people's life.And along with progressively the improving of technology, the progressively proposition of new material, control system for permanent-magnet synchronous motor will have more vast potential for future development.Meanwhile, along with improving constantly of motor manufacturing level, the expansion of capacity motor, jumbo control system for permanent-magnet synchronous motor is played a greater and greater role in the life of people.
It should be noted that the development of magneto and its control system is promoted greatly along with third generation rare earth permanent-magnetic material that is cheap, function admirable is developed successfully further.Along with the raising of magnetism of material energy, the decline of permanent magnetic material price, and the appearance of novel permanent magnetic material, permagnetic synchronous motor obtains the concern of increasing Technological research personnel.Permagnetic synchronous motor has that structure is simple, efficiency is high, volume is little, torque current than high, moment of inertia is low, power factor is high, be easy to the features such as heat radiation and maintaining.Its research and extension application receives the most attention of people.At present, the application of permagnetic synchronous motor is only confined to the occasion of constant frequency, constant rotational speed, makes the function of Permanent Magnet Synchronous Motor Controller comparatively single, only can meet the portion requirements of user, and there is the problem that precision is not high enough, synchronous effect is poor
Therefore, at present for the existing Permanent Magnet Synchronous Motor Controller function singleness of correlation technique, the problem of low precision, at present effective solution is not yet proposed.
Summary of the invention
For the existing Permanent Magnet Synchronous Motor Controller function singleness of correlation technique, the problem of low precision, at present effective solution is not yet proposed, for this reason, main purpose of the present invention is the controller providing a kind of electric vehicle permagnetic synchronous motor, to solve the problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of controller of electric vehicle permagnetic synchronous motor, this controller comprises: current collecting device, for gathering and the alternating current of processing motor output; Processor, is connected with current collecting device, for using basic parameter to compare the comparative result after process to control alternating current, generates drive singal; Drive circuit, is connected with processor, for receiving and processing drive singal, to export control signal; Power device, is connected with drive circuit, for reception control signal, to control the MOS power tube break-make in power device; Digital output modul device, is connected with power device with brake switch by Closing Switch, for controlling electric motor starting braking; Switching power unit, is connected with drive circuit, for providing electric energy.
Optionally, Permanent Magnet Synchronous Motor Controller also comprises: driving signal output circuit, is connected between drive circuit and processor, exports drive circuit to after the drive singal for being generated by processor carries out filtration treatment; Temperature collecting device, is connected with processor, for gathering the real-time temperature values of radiator, makes processor perform excess temperature current limliting or shutdown control according to real-time temperature values; Failure protecting device, is connected between power device and processor, for when power device sends fault-signal, sends fixed level signal to processor, makes processor turn off the output of drive singal according to fixed level signal; Communicating circuit, is connected with processor, for receiving at least one signals of vehicles that bus network sends, makes processor control the operating state of car load according to signals of vehicles; Hall element, is connected with current sampling device.
Optionally, voltage collection circuit comprises: resistor voltage divider circuit, carries out voltage division processing for the direct voltage that will collect, and obtains the first direct voltage after dividing potential drop; Filter circuit, is connected with resistor voltage divider circuit, for the first direct voltage after dividing potential drop being carried out interference process, obtains filtered second direct voltage; Ratio discharge circuit, is connected with filter circuit, for filtered second direct voltage is amplified, and the 3rd direct voltage after being amplified, and the 3rd direct voltage is sent to processor.
Optionally, current collection circuit comprises: current shunting circuit, for three phse conversion electric currents being carried out shunting process, obtains the first conversion electric current after shunting; A filter circuit, is connected with current shunting circuit, for the first conversion electric current after shunting is once gone interference process, obtains once filtered second conversion electric current; An amplifying circuit, is connected with a filter circuit, for once carrying out the large process of single step of releasing by filtered second conversion electric current, the 3rd conversion electric current after once being amplified; Secondary filtering circuit, is connected with an amplifying circuit, for by once amplify after the 3rd conversion electric current carry out secondary go interference process, obtain after secondary filtering the 4th conversion electric current; Secondary amplifying circuit, is connected with secondary filtering circuit, amplifies process, obtain the 5th conversion electric current after secondary amplification for the 4th conversion electric current after secondary filtering is carried out secondary.
Optionally, driving signal output circuit also comprises: input unit, for the drive singal that receiving processor generates; Filter buffer circuit, be connected with input unit, for drive singal is carried out filtration isolation processing, obtain removing the drive singal after interference signal, to control the output waveform of drive singal.
Optionally, temperature collecting device comprises: temperature sensor, for responding to the real-time temperature values of radiator, and converts real-time temperature values to temperature signal and transmits; Temperature value filter, is connected with temperature sensor, for filtering temperature signal; Temperature value amplifying device, is connected with temperature value filter, for carrying out amplification process to the temperature signal after filtration.
Optionally, digital output modul circuit comprises: ON-OFF control circuit, controls electric motor starting for opening switch by control signal; Brake control circuit, for being greater than battery rated voltage in DC bus-bar voltage, sending brake signal control brake switch and closes.
Optionally, failure protecting device comprises: receiving system, and send fault-signal for received power device, fault-signal comprises: overvoltage signal, over-current signal or short-circuit signal; Guard signal generating apparatus, is connected with receiving system, for after fault-signal being detected, exports fixed level signal, and fixed level signal is sent to processor.
Optionally, processor comprises: comparator processor, for flux component and torque component being compared with flux reference and torque reference respectively, obtains the drive singal for controlling rotor flux position, with control synchronization motor.
Optionally, power device comprises the three-phase bridge circuit that six power tubes are formed.
To achieve these goals, according to another aspect of the present invention, provide a kind of onboard system, this onboard system comprises the controller of any one electric vehicle permagnetic synchronous motor above-mentioned.
By the present invention, adopt current collecting device, for gathering and the alternating current of processing motor output; Processor, is connected with current collecting device, for using basic parameter to compare the comparative result after process to control alternating current, generates drive singal; Drive circuit, is connected with processor, for receiving and processing drive singal, to export control signal; Power device, is connected with drive circuit, for reception control signal, to control the MOS power tube break-make in power device; Digital output modul device, is connected with power device with brake switch by Closing Switch, for controlling electric motor starting braking; Switching power unit, is connected with drive circuit, for providing electric energy, solves the existing Permanent Magnet Synchronous Motor Controller function singleness of correlation technique, the problem of low precision, and then achieves the effect with high accuracy, on a large scale Permanent Magnet Synchronous Motor Controller.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the controller of electric vehicle permagnetic synchronous motor according to the embodiment of the present invention;
Fig. 2 is the detailed construction schematic diagram of the controller of electric vehicle permagnetic synchronous motor according to the embodiment of the present invention;
Fig. 3 is the structural representation of the voltage collection circuit according to the embodiment of the present invention;
Fig. 4 is the detailed circuit schematic according to voltage collection circuit embodiment illustrated in fig. 3;
Fig. 5 is the structural representation of the current collection circuit according to the embodiment of the present invention;
Fig. 6 is the detailed circuit schematic according to current collection circuit embodiment illustrated in fig. 5;
Fig. 7 is the structural representation of the digital output modul circuit according to the embodiment of the present invention;
Fig. 8 is the detailed circuit schematic according to digital output modul circuit embodiment illustrated in fig. 7
Fig. 9 is the structural representation of the driving signal output circuit according to the embodiment of the present invention;
Figure 10 is the detailed circuit schematic according to driving signal output circuit embodiment illustrated in fig. 9;
Figure 11 is the structural representation of the temperature collecting device according to the embodiment of the present invention;
Figure 12 is the detailed circuit schematic according to temperature collecting device embodiment illustrated in fig. 11;
Figure 13 is the structural representation of the failure protecting device according to the embodiment of the present invention;
Figure 14 is the detailed circuit schematic according to failure protecting device embodiment illustrated in fig. 13;
Figure 15 is the detailed circuit schematic of the drive circuit according to the embodiment of the present invention; And
Figure 16 is the detailed circuit schematic of the communicating circuit according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In the configuration that it is the most basic, Fig. 1 is the structural representation of the controller of electric vehicle permagnetic synchronous motor according to the embodiment of the present invention; Fig. 2 is the detailed construction schematic diagram of the controller of electric vehicle permagnetic synchronous motor according to the embodiment of the present invention.
As shown in Figure 1, the controller of this electric vehicle permagnetic synchronous motor can comprise: voltage collecting device 10, current collecting device 30, processor 50, drive circuit 70, power device 90, digital output modul device 110, switching power unit 130.
Wherein, voltage collecting device 10, for gathering and processing direct voltage; Current collecting device 30, for gathering and the alternating current of processing motor output; Processor 50, is connected with current collecting device, for using basic parameter to compare the comparative result after process to control alternating current, generates drive singal; Drive circuit 70, is connected with processor, for receiving and processing drive singal, to export control signal; Power device 90, is connected with drive circuit, for reception control signal, to control the MOS power tube break-make in power device; Digital output modul device 110, is connected with power device with brake switch by Closing Switch, for controlling electric motor starting braking.Switching power unit 130, is connected with drive circuit, for providing electric energy.
The above embodiments of the present application provide a kind of controller for controlling motor by each functional device above-mentioned, the controller of the electric vehicle permagnetic synchronous motor that such scheme provides is a kind of Permanent Magnet Synchronous Motor Controller based on DSP, object has closed-loop drive control mode that is safe, stable, efficient, low cost for motor provides, no longer be confined to the occasion of constant frequency, constant rotational speed, this Alternating Current Governor System be made up of permagnetic synchronous motor has been widely used in the speed regulator of low capacity, servo occasion.Wherein, show outstanding with permanent magnet synchronous motor vector control system because having high accuracy, the on a large scale characteristic such as speed governing or positioning control.Therefore, permanent magnet synchronous motor vector control system has become the primary study direction of Small And Medium Capacity AC speed regulating and drive system, has vast potential for future development.Thus solve the existing Permanent Magnet Synchronous Motor Controller function singleness of correlation technique, the problem of low precision, and then achieve the effect with high accuracy, on a large scale Permanent Magnet Synchronous Motor Controller.
Preferably, as shown in Figure 2, in the embodiment of the present application, Permanent Magnet Synchronous Motor Controller can also comprise: driving signal output circuit 150, temperature collecting device 170, failure protecting device 190, Hall element 210 and communicating circuit 230.
Wherein, driving signal output circuit 150, is connected between drive circuit and processor, exports drive circuit to after the drive singal for being generated by processor carries out filtration treatment; Temperature collecting device 170, is connected with processor, for gathering the real-time temperature values of radiator, makes processor perform excess temperature current limliting or shutdown control according to real-time temperature values; Failure protecting device 190, is connected between power device and processor, for when power device sends fault-signal, sends fixed level signal to processor, makes processor turn off the output of drive singal according to fixed level signal; Communicating circuit 230, is connected with processor, for receiving at least one signals of vehicles that bus network sends, makes processor control the operating state of car load according to signals of vehicles; Hall element 210, is connected with current sampling device.
Scheme shown in composition graphs 1 and Fig. 2, the above-mentioned Permanent Magnet Synchronous Motor Controller system block diagram based on DSP of the present invention, can be divided into main circuit and control circuit two parts, main circuit can comprise unit, the unit of digital output modul device, the unit of switching power unit of power device.Control circuit can comprise: the unit of the unit of the unit of DSP core processor, the unit of voltage collecting device, current collecting device, the unit of temperature collecting device, failure protecting device, the unit of digital output modul device, the interface unit of CAN communication circuit, power circuit unit.Wherein, the unit of DSP kernel processing device is connected with voltage collecting device, current collecting device, temperature collecting device, failure protecting device, digital output modul device, CAN communication interface arrangement, drive unit; power circuit unit and core processing unit, for being electrically connected, also supply to be electrically connected with other unit.Preferably; DSP core processor is connected with vehicle communication by communicating circuit (such as CAN interface circuit); core processor is connected with Hall element by current sampling circuit; core processor is connected with direct voltage sampled point by voltage sampling circuit; core processor is connected with power model with fault secure circuit by drive circuit; preferably, power device can comprise the three-phase bridge circuit that six power tubes are formed.In addition, switching power unit and core processor, for being electrically connected, also provide voltage source with other devices above-mentioned.
Preferably, the processor in the above embodiments of the present application comprises: comparator processor, for flux component and torque component being compared with flux reference and torque reference respectively, obtains the drive singal for controlling rotor flux position, with control synchronization motor.Concrete, the unit of core processor is connected with Hall element by current sampling circuit, measures motor three phse conversion electric currents, and these measure feed-in motor coordinate transformation module, they provide the electric current in rotating reference frame.Flux component is compared with torque reference with flux reference with torque component.It can be used to carry out control synchronization motor by changing flux reference simply and obtaining rotor flux position.
Core processing unit, by CAN interface unit access vehicle CAN bus network, can receive accelerator pedal, brake pedal and clutch pedal signal that CAN network sends, key position signal and gear signal.Judge vehicle operator intention and car load operating state with this, send correct control command according to control strategy.
Preferably, as shown in Figure 3, the voltage collection circuit in the above embodiments of the present application can comprise: resistor voltage divider circuit, carries out voltage division processing for the direct voltage that will collect, and obtains the first direct voltage after dividing potential drop; Filter circuit, is connected with resistor voltage divider circuit, for the first direct voltage after dividing potential drop being carried out interference process, obtains filtered second direct voltage; Ratio discharge circuit, is connected with filter circuit, for filtered second direct voltage is amplified, and the 3rd direct voltage after being amplified, and the 3rd direct voltage is sent to processor.
Concrete, Fig. 4 is the detailed circuit schematic based on the voltage collection circuit shown in Fig. 3, and the voltage collection circuit in the above embodiments of the present application is DC-bus voltage sampling circuit, and direct voltage is through electric resistance partial pressure, filtering, sends into processor after passing ratio amplifier.Gather the instantaneous value that DC bus-bar voltage effectively can detect DC bus-bar voltage.
Preferably, as shown in Figure 5, in the above embodiments of the present application, current collection circuit comprises: current shunting circuit, for three phse conversion electric currents being carried out shunting process, obtains the first conversion electric current after shunting; A filter circuit, is connected with current shunting circuit, for the first conversion electric current after shunting is once gone interference process, obtains once filtered second conversion electric current; An amplifying circuit, is connected with a filter circuit, for once carrying out the large process of single step of releasing by filtered second conversion electric current, the 3rd conversion electric current after once being amplified; Secondary filtering circuit, is connected with an amplifying circuit, for by once amplify after the 3rd conversion electric current carry out secondary go interference process, obtain after secondary filtering the 4th conversion electric current; Secondary amplifying circuit, is connected with secondary filtering circuit, amplifies process, obtain the 5th conversion electric current after secondary amplification for the 4th conversion electric current after secondary filtering is carried out secondary.
Concrete, Fig. 6 is the detailed circuit schematic based on the current collection circuit shown in Fig. 5, current collection circuit in the above embodiments of the present application is alternating current sample circuit, measure motor three phse conversion electric currents, these measure feed-in motor coordinate transformation module, they provide the electric current in rotating reference frame.Flux component is compared with torque reference with flux reference with torque component.It can be used to carry out control synchronization motor by changing flux reference simply and obtaining rotor flux position.
Preferably, as shown in Figure 7, the digital output modul circuit in the above embodiments of the present application can comprise: ON-OFF control circuit, controls electric motor starting for opening switch by control signal; Brake control circuit, for being greater than battery rated voltage in DC bus-bar voltage, sending brake signal control brake switch and closes.
Concrete, Fig. 8 is the detailed circuit schematic based on the digital output modul circuit shown in Fig. 7, and the digital output modul circuit in the above embodiments of the present application, can comprise ON-OFF control circuit and brake control circuit.First Closing Switch is needed before electric motor starting.When brake or motor feedback electric energy, if DC bus-bar voltage is greater than battery rated voltage, need to terminate energy back, closed brake switch, puts DC bus-bar voltage to battery rated voltage.
Preferably, as shown in Figure 9, the driving signal output circuit in the above embodiments of the present application can comprise: input unit, for the drive singal that receiving processor generates; Filter buffer circuit, be connected with input unit, for drive singal is carried out filtration isolation processing, obtain removing the drive singal after interference signal, to control the output waveform of drive singal.
Concrete, Figure 10 is the detailed circuit schematic based on the driving signal output circuit shown in Fig. 9, the driving signal output circuit in the above embodiments of the present application, gives drive circuit after the drive singal that can be exported by processor by quarantine measures is completely isolated.Drive singal output waveform determines the quality that whole controlled motor operates strictly to control wave form output quality.
Preferably, as shown in figure 11, the temperature collecting device in the above embodiments of the present application can comprise: temperature sensor, for responding to the real-time temperature values of radiator, and converts real-time temperature values to temperature signal and transmits; Temperature value filter, is connected with temperature sensor, for filtering temperature signal; Temperature value amplifying device, is connected with temperature value filter, for carrying out amplification process to the temperature signal after filtration.
Concrete, Figure 12 is the detailed circuit schematic based on the temperature collecting device shown in Figure 11, and the temperature sampling circuit in the above embodiments of the present application can gather radiator real-time temperature values by transducer NTC, realizes excess temperature current limliting or shutdown control.
Preferably, as shown in figure 13, the failure protecting device in the above embodiments of the present application can comprise: receiving system, and send fault-signal for received power device, fault-signal comprises: overvoltage signal, over-current signal or short-circuit signal; Guard signal generating apparatus, is connected with receiving system, for after fault-signal being detected, exports fixed level signal, and fixed level signal is sent to processor.
Concrete; Figure 14 is the detailed circuit schematic based on the failure protecting device shown in Figure 13; driving malfunction protective circuit in the above embodiments of the present application can produce the faults such as overvoltage, overcurrent, short circuit by available protecting power model; if there is above-mentioned situation; Drive Protecting Circuit provides a fixed level signal to processor, turns off drive singal and exports.
Concrete, Figure 15 is the detailed circuit schematic of the drive circuit in the above embodiments of the present application, and the signal of driving signal output circuit sends into drive circuit, exports, control two metal-oxide-semiconductor break-makes through driving chip process, realizes controlling power model work.The three-phase bridge circuit that power model is made up of six power tubes, when alternating current sends into processor die number conversion passage by current sampling circuit, processor first carries out calculation process to data and is comparing with basic parameter, results conversion becomes drive singal, export drive circuit to, realize the course of work of closed-loop control.
Concrete, Figure 16 is the detailed circuit schematic of the communicating circuit in the above embodiments of the present application, concrete, and this communicating circuit can be CAN communication circuit, accelerator pedal, brake pedal and clutch pedal signal that CAN network sends can be received, key position signal and gear signal.Judge vehicle operator intention and car load operating state with this, send correct control command according to control strategy.
Present invention also provides a kind of onboard system, the controller of any one electric vehicle permagnetic synchronous motor above-mentioned can be comprised.
It can thus be appreciated that along with third generation rare earth permanent-magnetic material that is cheap, function admirable is developed successfully, the development of the magneto that the application provides and its control system is promoted greatly.Along with the raising of magnetism of material energy, the decline of permanent magnetic material price, and the appearance of novel permanent magnetic material, permagnetic synchronous motor obtains the concern of increasing Technological research personnel.Permagnetic synchronous motor has that structure is simple, efficiency is high, volume is little, torque current than high, moment of inertia is low, power factor is high, be easy to the features such as heat radiation and maintaining.Its research and extension application receives the most attention of people.At present, the application of permagnetic synchronous motor is no longer confined to the occasion of constant frequency, constant rotational speed, and the Alternating Current Governor System be made up of permagnetic synchronous motor has been widely used in the speed regulator of low capacity, servo occasion.Wherein, show outstanding with permanent magnet synchronous motor vector control system because having high accuracy, the on a large scale characteristic such as speed governing or positioning control.Therefore, permanent magnet synchronous motor vector control system has become the primary study direction of Small And Medium Capacity AC speed regulating and drive system, has vast potential for future development.
From above description, can find out, present invention achieves following technique effect: solve the existing Permanent Magnet Synchronous Motor Controller function singleness of correlation technique, the problem of low precision, and then achieve the effect with high accuracy, on a large scale Permanent Magnet Synchronous Motor Controller.Concrete, owing to adopting sensorless strategy, effectively can reduce cost, control flexibly when the slow-speed of revolution runs, precision is high; There is low noise, control motor rotation steady, for motor provides better stability; PWM ripple stable output, without clutter, noiseless, waveform can be converted according to control strategy change fast, make control precision higher, react sensitiveer.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a controller for electric vehicle permagnetic synchronous motor, is characterized in that, comprising:
Voltage collecting device, for gathering and processing direct voltage;
Current collecting device, for gather and process described motor export alternating current;
Processor, is connected with described current collecting device, for using basic parameter to compare the comparative result after process to control described alternating current, generates drive singal;
Drive circuit, is connected with described processor, for receiving and processing described drive singal, to export control signal;
Power device, is connected with described drive circuit, for receiving described control signal, to control the MOS power tube break-make in described power device;
Digital output modul device, is connected with described power device with brake switch by Closing Switch, for controlling the braking of described electric motor starting;
Switching power unit, is connected with described drive circuit, for providing electric energy.
2. controller according to claim 1, is characterized in that, described Permanent Magnet Synchronous Motor Controller also comprises:
Driving signal output circuit, is connected between described drive circuit and described processor, exports described drive circuit to after the drive singal for being generated by described processor carries out filtration treatment;
Temperature collecting device, is connected with described processor, for gathering the real-time temperature values of radiator, makes described processor perform excess temperature current limliting or shutdown control according to described real-time temperature values;
Failure protecting device, be connected between described power device and described processor, for when described power device sends fault-signal, send fixed level signal to described processor, make described processor turn off the output of described drive singal according to described fixed level signal;
Communicating circuit, is connected with described processor, for receiving at least one signals of vehicles that bus network sends, makes described processor control the operating state of car load according to described signals of vehicles;
Hall element, is connected with described current sampling device.
3. controller according to claim 2, is characterized in that, described voltage collection circuit comprises:
Resistor voltage divider circuit, carries out voltage division processing for the direct voltage that will collect, and obtains the first direct voltage after dividing potential drop;
Filter circuit, is connected with described resistor voltage divider circuit, for described first direct voltage after described dividing potential drop being carried out interference process, obtains filtered second direct voltage;
Ratio discharge circuit, is connected with described filter circuit, for described filtered described second direct voltage is amplified, and the 3rd direct voltage after being amplified, and described 3rd direct voltage is sent to described processor.
4. controller according to claim 2, is characterized in that, described current collection circuit comprises:
Current shunting circuit, for described three phse conversion electric currents being carried out shunting process, obtains the first conversion electric current after shunting;
A filter circuit, is connected with described current shunting circuit, for the first conversion electric current after described shunting is once gone interference process, obtains once filtered second conversion electric current;
An amplifying circuit, is connected with a described filter circuit, for described once filtered second conversion electric current is carried out the large process of single step of releasing, the 3rd conversion electric current after once being amplified;
Secondary filtering circuit, is connected with a described amplifying circuit, goes interference process, obtain the 4th conversion electric current after secondary filtering for the 3rd conversion electric current after described once amplification is carried out secondary;
Secondary amplifying circuit, is connected with described secondary filtering circuit, amplifies process, obtain the 5th conversion electric current after secondary amplification for the 4th conversion electric current after described secondary filtering is carried out secondary.
5. controller according to claim 2, is characterized in that, described driving signal output circuit also comprises:
Input unit, for receiving the drive singal that described processor generates;
Filter buffer circuit, be connected with described input unit, for described drive singal is carried out filtration isolation processing, obtain removing the drive singal after interference signal, to control the output waveform of described drive singal.
6. controller according to claim 2, is characterized in that, described temperature collecting device comprises:
Temperature sensor, for responding to the real-time temperature values of described radiator, and converts described real-time temperature values to temperature signal and transmits;
Temperature value filter, is connected with described temperature sensor, for filtering described temperature signal;
Temperature value amplifying device, is connected with described temperature value filter, for carrying out amplification process to the temperature signal after described filtration.
7. controller according to claim 2, is characterized in that, described digital output modul circuit comprises:
ON-OFF control circuit, controls electric motor starting for opening switch by control signal;
Brake control circuit, for being greater than battery rated voltage in DC bus-bar voltage, sending brake signal control brake switch and closes.
8. controller according to claim 2, is characterized in that, described failure protecting device comprises:
Receiving system, send fault-signal for receiving described power device, described fault-signal comprises: overvoltage signal, over-current signal or short-circuit signal;
Guard signal generating apparatus, is connected with described receiving system, for after described fault-signal being detected, exports described fixed level signal, and described fixed level signal is sent to described processor.
9. controller according to claim 1, is characterized in that, described processor comprises:
Comparator processor, for flux component and torque component being compared with flux reference and torque reference respectively, obtains the described drive singal for controlling rotor flux position, with control synchronization motor.
10. controller according to claim 1, is characterized in that, described power device comprises the three-phase bridge circuit that six power tubes are formed.
11. 1 kinds of onboard systems, is characterized in that, comprise the controller of the described electric vehicle permagnetic synchronous motor of any one in claim 1-10.
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| CN201310718938.2A CN104734576A (en) | 2013-12-23 | 2013-12-23 | Controller of permanent magnetic synchronous motor for electric vehicle and vehicle-mounted system |
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| CN201310718938.2A CN104734576A (en) | 2013-12-23 | 2013-12-23 | Controller of permanent magnetic synchronous motor for electric vehicle and vehicle-mounted system |
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Application publication date: 20150624 |