CN202818204U - Control system for a brushless DC motor of a motor vehicle - Google Patents
Control system for a brushless DC motor of a motor vehicle Download PDFInfo
- Publication number
- CN202818204U CN202818204U CN2012202765998U CN201220276599U CN202818204U CN 202818204 U CN202818204 U CN 202818204U CN 2012202765998 U CN2012202765998 U CN 2012202765998U CN 201220276599 U CN201220276599 U CN 201220276599U CN 202818204 U CN202818204 U CN 202818204U
- Authority
- CN
- China
- Prior art keywords
- motor
- brushless
- electric vehicle
- duty ratio
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model provides a control system for a brushless DC motor of a motor vehicle. The control system at least comprises a current sampling unit for sampling the current output from the brushless DC motor of the motor vehicle; a Holzer sensor for sensing the position of a rotor of the brushless DC motor of the motor vehicle; an angle sensor for sensing the angle of a throttle of the motor vehicle; an inverter connected with the brushless DC motor; and a control unit used for determining the PWM pulse duty ratio according to the angle sensed by the sampled current, and outputting the corresponding switch control signal to the inverter based on the duty ratio, and also used for filtering the Holzer signal based on the filter time of the Holzer signal, and adjusting the filter time of the Holzer signal according to the filter result and outputting the corresponding switch control signal to the inverter. The control system has the following advantages: the motor efficiency is high, the requirement of the motor for full rotation speed range from the zero rotation speed to the highest rotation speed is satisfied, and the better ramp starting and ramp climbing performance of the motor vehicle is ensured.
Description
Technical field
The utility model relates to the attached brushless DC motor of electric vehicle field, particularly relates to a kind of control system for attached brushless DC motor of electric vehicle.
Background technology
As power, so the relative orthodox car of its impact on environment is little, extensively had an optimistic view of by prospect with vehicle power for electric automobile.The composition of electric automobile comprises: the mechanical systems such as driven by power and control system, actuating force transmission, finish the equipment of set task etc.Wherein, driven by power and control system are the cores of electric automobile, also are the maximum differences that is different from internal-combustion engines vehicle.Driven by power and control system are comprised of the controller etc. of drive motors and control drive motors.Drive motors as the electric automobile core technology should possess following characteristics: specific power density is high, specific torque density high, efficient is high, good reliability, be easy to safeguard, have good speed adjusting performance and can normally move under adverse circumstances etc., and brshless DC motor just in time satisfies those requirements, it is simple in structure, control convenience not only, and cost is lower, so become gradually the first-selected motor of driving motor of electric vehicle.
Early stage, motor vehicle was mainly used in specific place car, operating mode is simple, and environmental interference is less, or disturbance type is single, performance requirement to motor and electric machine controller is lower, so the controller of the brshless DC motor of control motor vehicle is normally controlled the operation of motor by regulating busbar voltage.Along with the reinforcement of people's environmental consciousness, the cry of motor vehicle universalness is more and more higher, and the motor vehicle of low-power machine has been difficult to satisfy the demands; In addition, existing hardware circuit or the fixing hall signal filtering mode of filtering time of adopting, the heavy-duty motor that also can't satisfy motor vehicle by low speed to the at a high speed full requirement of speed stage.
Therefore, how effectively to control the high-power brushless direct current machine of motor vehicle, become the technical task that those skilled in the art need to be resolved hurrily.
The utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of control system for attached brushless DC motor of electric vehicle, to improve the brushless dc engine efficiency, guarantees vehicle preferably uphill starting and grade climbing performance.
Reach for achieving the above object other relevant purposes, the utility model provides a kind of control system for attached brushless DC motor of electric vehicle, and it comprises at least:
The current sampling unit that is used for sampling attached brushless DC motor of electric vehicle output current;
Respond to the Hall element of described attached brushless DC motor of electric vehicle rotor-position;
The angular transducer of sensing electric motor car gasoline throttle angle;
The inverter that is connected with described attached brushless DC motor of electric vehicle; And
The control unit that is connected with described current sampling unit, angular transducer and Hall element, the electric current that it is sampled according to described current sampling unit and the angle of described angular transducer sensing are determined the pwm pulse duty ratio, and export corresponding switch controlling signal to described inverter based on described duty ratio; The hall signal that control unit is also exported described Hall element according to the hall signal filtering time carries out filtering, and adjusts the hall signal filtering time and export corresponding switch controlling signal to described inverter according to the filtering result.
Preferably, described control system for attached brushless DC motor of electric vehicle also comprises: the voltage collection circuit that gathers busbar voltage; Described control unit is connected with described voltage collection circuit, and adjusts the pwm pulse duty ratio when electric voltage exception that described voltage collection circuit gathers, and exports corresponding switch controlling signal to described inverter based on the duty ratio after adjusting.
Preferably, described control system for attached brushless DC motor of electric vehicle also comprises: the temperature sensor of the described inverter temperature of sensing; Described control unit is connected with described temperature sensor, and adjusts the pwm pulse duty ratio when the temperature of described temperature sensor institute sensing surpasses predetermined temperature threshold, and exports corresponding switch controlling signal to described inverter based on the duty ratio after adjusting.
As mentioned above, the control system for attached brushless DC motor of electric vehicle of the present utility model has following beneficial effect: the brushless dc engine efficiency is high; Can realize the requirement of brshless DC motor from zero rotating speed to the full speed stage of maximum speed.The starting of motor heavy load be can guarantee, vehicle preferably uphill starting and grade climbing performance guaranteed.
Description of drawings
Fig. 1 is shown as the control system schematic diagram for attached brushless DC motor of electric vehicle of the present utility model.
The element numbers explanation
Embodiment
Below by particular specific embodiment execution mode of the present utility model is described, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.
See also Fig. 1.Notice, the appended graphic structure that illustrates of this specification, ratio, size etc., equal contents in order to cooperate specification to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the utility model, so technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the purpose that can reach, all should still drop on the technology contents that the utility model discloses and get in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the utility model.
As shown in the figure, the utility model provides a kind of control system for attached brushless DC motor of electric vehicle.Described control system 1 for attached brushless DC motor of electric vehicle comprises at least: current sampling unit 11, Hall element 12, angular transducer 13, inverter 14 and control unit 15.
Described current sampling unit 11 is used for the electric current of sampling attached brushless DC motor of electric vehicle 2 outputs.Preferably, described current sampling unit 11 comprises and is connected to the sampling resistor in attached brushless DC motor of electric vehicle 2 output loops or comprises current sensor, so that the electric current of sampling attached brushless DC motor of electric vehicle output.
Described Hall element 12 is used for responding to the rotor-position of described attached brushless DC motor of electric vehicle 2.Those skilled in the art should understand that described Hall element 12, so no longer described in detail at this.
Described angular transducer 13 is used for the angle of sensing electric motor car throttle 3.
Described inverter 14 is connected with described attached brushless DC motor of electric vehicle 2, and being used for provides driving voltage based on the switching of switch to described attached brushless DC motor of electric vehicle 2.(inverter has 2 electrical level inverters, 3 electrical level inverters ... .N electrical level inverter etc., so adopt the appellation of the inverter of N level structure, considers that existing electric motor car is to be powered by 2 electrical level inverters, so above description is deleted.）
Described control unit 15 is connected with described current sampling unit 11, angular transducer 13 and Hall element 12, the angle that is used for the electric current of sampling according to described current sampling unit 11 and described angular transducer 13 sensings is determined the duty ratio of pwm pulse, and exports extremely described inverter 14 of corresponding switch controlling signal based on described duty ratio; Also be used for carrying out filtering according to the hall signal that the hall signal filtering time exports described Hall element 12, and adjust the hall signal filtering time and export corresponding switch controlling signal to described inverter 14 according to the filtering result.
Particularly, when the throttle of described electric motor car is operated, the electric current that described control unit 15 is sampled according to described current sampling unit 11, employing Te=K
TI determines the torque T e of described attached brushless DC motor of electric vehicle 2 current outputs, and determine the described attached brushless DC motor of electric vehicle 2 current torque T e ' that should export=Temax* α according to the angle of described angular transducer 13 sensings, described control unit 15 calculates the duty ratio of pwm pulse according to the difference of the moment of torsion of the described attached brushless DC motor of electric vehicle 2 current moments of torsion that should export and current output, and recently control the switching of each switch of described inverter 14 according to the duty that calculates, in order to regulate the average voltage of the described attached brushless DC motor of electric vehicle 2 of input, thereby realize the adjusting to described attached brushless DC motor of electric vehicle 2 output torques.Wherein, K
TBe the motor torque coefficient, i is sample rate current; Temax is the breakdown torque of motor, and α is gasoline throttle angle, and its span is [0,1].
Preferably, described control unit 15 adopts pi regulator to calculate the duty ratio of pwm pulse according to the difference of the moment of torsion of the current moment of torsion that should export of described attached brushless DC motor of electric vehicle and current output.When described control unit 15 receives the hall signal of exporting from described Hall element 12, judge whether described hall signal saltus step has occured, if, the hall signal of then according to the hall signal filtering time described Hall element 12 being exported carries out filtering, to eliminate the interference in the hall signal, repeatedly saltus step pulse when eliminating the Hall commutation is on the impact of Electric Machine Control, and determine whether this filtered hall signal is correct hall signal, if, then export corresponding switch controlling signal to described inverter 14 according to described hall signal, so that the corresponding of described inverter 14 is conducted, realize the commutation of described attached brushless DC motor of electric vehicle 2; Simultaneously, described control unit 15 calculates the rotating speed of described attached brushless DC motor of electric vehicle 2 also according to current hall signal and a plurality of hall signals before, and adjusts the hall signal filtering time based on the rotating speed that calculates.
Particularly, occur because electrical cycle of the every rotation of motor has 6 hall signals, when the motor number of pole-pairs was N, then motor whenever rotated a circle and has N electrical cycle, and 6N time hall signal event can occur.The characteristic that can not suddenly change according to the rotating speed of motor, then especially big variation can not occur in the time of hall signal in short-term, can not sport 1/10 of the last hall signal cycle such as the new hall signal cycle, so, if it is too short that described control unit 15 detects the new hall signal cycle, then think invalid interference signal and with its filtering, and then, described control unit 15 is determined electrical cycle required time of motor rotation based on adjacent 6N filtered hall signal, and then the rotating speed of definite motor.
Preferably, described control unit 15 adopts microprocessor, central control unit or digital signal processor etc. to realize.
As a kind of optimal way, described control system 1 also comprises voltage collection circuit (not giving diagram).Described voltage collection circuit is used for gathering busbar voltage; and export the busbar voltage that gathers to described control unit 15; described control unit 15 is judged when this busbar voltage exceeds predetermined voltage range; then adjust the pwm pulse duty ratio; for example; the pwm pulse duty ratio is adjusted into 0; and export corresponding switch controlling signal to described inverter 14 based on the duty ratio after adjusting; so that described inverter 14 is adjusted the switching of switch; and then adjust the average voltage of described attached brushless DC motor of electric vehicle 2, the protection when realizing electric voltage exception.
As another kind of optimal way, described control system 1 also comprises temperature sensor (not giving diagram).Described temperature sensor is used for the temperature of the described inverter 14 of sensing; and export the temperature of institute's sensing to described control unit 15; described control unit 15 is judged when this temperature surpasses predetermined temperature threshold; then adjust the pwm pulse duty ratio; and export corresponding switch controlling signal to described inverter 14 based on the duty ratio after adjusting; with the power output of reduction inverter 14, thereby realize overheat protector.
As another optimal way; described control unit 15 is after receiving the electric current of sampling from described current sampling unit 11; judge first whether this electric current surpasses predetermined current threshold; if; then adjust the pwm pulse duty ratio; and export corresponding switch controlling signal to described inverter 14 based on the duty ratio after adjusting, with protection inverter 14 and attached brushless DC motor of electric vehicle 2, avoid damaging.
In sum, the control system for attached brushless DC motor of electric vehicle of the present utility model is controlled the operation of attached brushless DC motor of electric vehicle by regulating the duty ratio of pwm pulse signal, Effective Raise the efficient of brshless DC motor; In addition, also adopt the filtering mode of filtering hall signal fixed angle, can realize the full speed stage requirement of brshless DC motor from zero rotating speed to maximum speed.The starting of brshless DC motor heavy load be can guarantee, vehicle preferably uphill starting and grade climbing performance guaranteed; Have again, carry out the closed-loop control of brshless DC motor output torque according to the angle of gas pedal, be convenient to be accepted by the user; Also have; by the real-time sampling to quantity of states such as the busbar voltage of brshless DC motor, output current, temperature; can be as rapidly reaction when load changes suddenly; with the safe operation of protection brshless DC motor, also realize the functions such as busbar voltage abnormal protection, overcurrent protection, overheat protector simultaneously.So the utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Any person skilled in the art scholar all can be under spirit of the present utility model and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under spirit that the utility model discloses and the technological thought, must be contained by claim of the present utility model.
Claims (3)
1. control system that is used for attached brushless DC motor of electric vehicle is characterized in that described control system for attached brushless DC motor of electric vehicle comprises at least:
The current sampling unit that is used for sampling attached brushless DC motor of electric vehicle output current;
Respond to the Hall element of described attached brushless DC motor of electric vehicle rotor-position;
The angular transducer of sensing electric motor car gasoline throttle angle;
The inverter that is connected with described attached brushless DC motor of electric vehicle;
The control unit that is connected with described current sampling unit, angular transducer and Hall element, the electric current that it is sampled according to described current sampling unit and the angle of described angular transducer sensing are determined the pwm pulse duty ratio, and export corresponding switch controlling signal to described inverter based on described duty ratio; The hall signal that control unit is also exported described Hall element according to the hall signal filtering time carries out filtering, and adjusts the hall signal filtering time and export corresponding switch controlling signal to described inverter according to the filtering result.
2. the control system for attached brushless DC motor of electric vehicle according to claim 1 characterized by further comprising:
Gather the voltage collection circuit of busbar voltage;
Described control unit is connected with described voltage collection circuit, and adjusts the pwm pulse duty ratio when electric voltage exception that described voltage collection circuit gathers, and exports corresponding switch controlling signal to described inverter based on the duty ratio after adjusting.
3. the control system for attached brushless DC motor of electric vehicle according to claim 1 characterized by further comprising:
The temperature sensor of the described inverter temperature of sensing;
Described control unit is connected with described temperature sensor, and adjusts the pwm pulse duty ratio when the temperature of described temperature sensor institute sensing surpasses predetermined temperature threshold, and exports corresponding switch controlling signal to described inverter based on the duty ratio after adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202765998U CN202818204U (en) | 2012-06-12 | 2012-06-12 | Control system for a brushless DC motor of a motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202765998U CN202818204U (en) | 2012-06-12 | 2012-06-12 | Control system for a brushless DC motor of a motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818204U true CN202818204U (en) | 2013-03-20 |
Family
ID=47877010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202765998U Expired - Lifetime CN202818204U (en) | 2012-06-12 | 2012-06-12 | Control system for a brushless DC motor of a motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508515A (en) * | 2017-09-11 | 2017-12-22 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of security personnel of permagnetic synchronous motor control method and apparatus |
-
2012
- 2012-06-12 CN CN2012202765998U patent/CN202818204U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508515A (en) * | 2017-09-11 | 2017-12-22 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of security personnel of permagnetic synchronous motor control method and apparatus |
| CN107508515B (en) * | 2017-09-11 | 2023-10-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Security control method and device for permanent magnet synchronous motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102324882B (en) | Current distribution method for hybrid excitation synchronous machine in wide range speed control system | |
| CN102198805B (en) | A kind of pure electric automobile ramp method in slope that magneto drives | |
| CN103490681B (en) | Control the method and system of attached brushless DC motor of electric vehicle | |
| CN102381309A (en) | Speed regulation and management method for range extender of electric car | |
| CN102941816A (en) | Driving motor torque control method for electric vehicle | |
| CN202042883U (en) | Overcurrent and overload protecting circuit | |
| CN102611369B (en) | Speed-regulating system for switched reluctance motor specially used for electric vehicle | |
| CN201338543Y (en) | Novel electric bicycle controller | |
| CN101867338A (en) | Speed control system of brush cutter and control method thereof | |
| CN201869153U (en) | Drive controller for permanent magnet synchronous motor of electromobile | |
| CN102717710A (en) | Speed limiting device of electric vehicle | |
| CN205220403U (en) | Tipper electricity transmission system | |
| CN103802688B (en) | Automobile motor low speed torque fan-out capability method for improving | |
| CN106849014A (en) | A kind of motor safety controls circuit system | |
| CN105305930A (en) | Electric motor control system | |
| CN201916228U (en) | Brushless fan controller without position sensor | |
| CN202560368U (en) | Generating set | |
| CN202818204U (en) | Control system for a brushless DC motor of a motor vehicle | |
| CN106849806A (en) | A kind of controller for electric vehicle and control method | |
| CN2666720Y (en) | Digital intelligent electric vehicle controller | |
| CN105799541A (en) | A self-healing method for the over-current fault of a drive motor of an electric vehicle | |
| CN101659219B (en) | System and method for controlling output torque of motor in ascent state of vehicle | |
| CN101860311B (en) | Drive device of series DC machine for pitch control system | |
| CN201781456U (en) | Alternating-current permanent magnet synchronous motor control system for electric vehicle | |
| CN202628572U (en) | Elevator room fan system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI YINGHENG ELECTRONIC CO., LTD. Free format text: FORMER OWNER: LU PEIXI Effective date: 20130731 Free format text: FORMER OWNER: ZHANG HUI Effective date: 20130731 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200032 XUHUI, SHANGHAI TO: 201203 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130731 Address after: 201203 No. 1000, Zhang Heng Road, Shanghai, Pudong New Area, No. 68 Patentee after: SHANGHAI YINGHENG ELECTRONIC Co.,Ltd. Address before: 200032 Shanghai city Xuhui District Xietu Road 2200 Lane 2, room 1602 Patentee before: Lu Peixi Patentee before: Zhang Hui |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Control system for a brushless DC motor of a motor vehicle Effective date of registration: 20161118 Granted publication date: 20130320 Pledgee: Bank of China Limited by Share Ltd. Shanghai Development Zone Pudong branch Pledgor: SHANGHAI YINGHENG ELECTRONIC Co.,Ltd. Registration number: 2016310000047 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221206 Granted publication date: 20130320 Pledgee: Bank of China Limited by Share Ltd. Shanghai Development Zone Pudong branch Pledgor: SHANGHAI YINGHENG ELECTRONIC Co.,Ltd. Registration number: 2016310000047 |