CN203574575U - Electric vehicle speed control device - Google Patents
Electric vehicle speed control device Download PDFInfo
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- CN203574575U CN203574575U CN201320621786.XU CN201320621786U CN203574575U CN 203574575 U CN203574575 U CN 203574575U CN 201320621786 U CN201320621786 U CN 201320621786U CN 203574575 U CN203574575 U CN 203574575U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 230000005669 field effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
一种电动汽车速度控制装置，包括无刷直流电机、转子位置传感器、控制电路、驱动电路、功率变换电路，其中转子位置传感器为霍尔位置传感器，安装在无刷直流电机的电枢上，控制电路包括电源、处理器和滤波整形电路，驱动电路包括隔离电路和功率驱动电路，隔离电路为变压器隔离电路，功率变换电路采用6只功率MOSFET场效应管组成的三相全控桥电路，霍尔位置传感器发出脉冲信号经滤波整形电路连接处理器，处理器输出控制信号经隔离电路至功率驱动电路，功率驱动电路驱动功率变换电路，功率变换电路输出电流控制无刷直流电机。采用上述技术方案，可有效的控制电动汽车的电机转速，且具有故障率低，寿命长，效率较高的特点。
A speed control device for an electric vehicle, comprising a brushless DC motor, a rotor position sensor, a control circuit, a drive circuit, and a power conversion circuit, wherein the rotor position sensor is a Hall position sensor, installed on the armature of the brushless DC motor, and controlled The circuit includes a power supply, a processor and a filter shaping circuit. The drive circuit includes an isolation circuit and a power drive circuit. The isolation circuit is a transformer isolation circuit. The pulse signal sent by the position sensor is connected to the processor through the filter shaping circuit, the processor outputs the control signal to the power drive circuit through the isolation circuit, the power drive circuit drives the power conversion circuit, and the output current of the power conversion circuit controls the brushless DC motor. By adopting the above technical solution, the motor speed of the electric vehicle can be effectively controlled, and it has the characteristics of low failure rate, long service life and high efficiency.
Description
Technical field
The utility model relates to a kind of electric automobile speed control unit, particularly a kind of brshless DC motor electric automobile speed control unit based on Hall element.
Background technology
Traditional electric automobile has mostly adopted brushless motor to drive, and needs brush-commutated device, belongs to mechanical commutation, and not only operational efficiency is lower, also exists the problems such as wear of brush, electric arc burn.Recent years, electric automobile starts to adopt brshless DC motor as driving, the features such as that but brshless DC motor has is non-linear, close coupling, multivariable, traditional control method is difficult to carry out good control, is therefore badly in need of a kind of control device that can control effectively to brshless DC motor.
Utility model content
Goal of the invention of the present utility model is a kind of speed control unit that can effectively control the brshless DC motor of electric automobile of design, and its concrete technical scheme is:
A kind of electric automobile speed control unit, comprise brshless DC motor, rotor-position sensor, control circuit, drive circuit, power conversion circuit, wherein rotor-position sensor is hall position sensor, be arranged on the armature of brshless DC motor, control circuit comprises power supply, processor and filtering shaping circuit, drive circuit comprises buffer circuit and power driving circuit, buffer circuit is transformer isolation circuit, the three-phase fully-controlled bridge circuit that power conversion circuit adopts 6 power MOSFET field effect transistor to form, hall position sensor sends pulse signal and connects processor through filtering shaping circuit, processor output control signal through buffer circuit to power driving circuit, power driving circuit driving power translation circuit, power conversion circuit output current is controlled brshless DC motor.
Processor adopting TMS320F2812DSP chip, power driving circuit adopts IR2130 as driving chip.
Processor also comprises and advances, retreats and accelerator pedal signal input port.
Adopt technique scheme, can effectively control the motor speed of electric automobile, and have failure rate is low, the life-span is long, the feature that efficiency is higher.
Accompanying drawing explanation
Fig. 1 electric automobile speed control unit system schematic;
Fig. 2 electric automobile speed control unit power major loop figure.
Embodiment
The embodiment setting forth below represents and allows those skilled in the art to put into practice necessary information of the present utility model, and illustrates and put into practice best mode of the present utility model.Once read with reference to the accompanying drawings following description, those skilled in the art just will understand design of the present utility model and will recognize the application of these designs of not illustrating especially herein.Should be appreciated that these designs and application fall into the scope of disclosure and the accompanying claims book.
Accompanying drawing 1 is electric automobile speed control unit system schematic, the GPIO mouth that can see dsp chip with reference to Fig. 1 receives the signal that advances or retreat, the input variable of the accelerator pedal of accepting according to ADC mouth, by PWM output port output control signal, because dsp chip power output is lower, and be easily interfered, control signal need to be isolated amplification through buffer circuit, buffer circuit generally can adopt transformer isolation and photoelectricity isolation, the present embodiment adopts the mode of transformer isolation, circuit is comparatively simple, reliable and stable.Control signal after isolation is amplified is through power driving circuit power ratio control translation circuit, and power conversion circuit adopts IR2130 chip as driving chip, the exportable larger control signal of IR2130 chip.Power conversion circuit is according to control signal output PWM current drives brshless DC motor BLDCM, and power conversion circuit is provided with current sensor, and current sensor feeds back signal to dsp chip, to guarantee the synchronous of output current.Brshless DC motor is provided with three hall position sensors on armature, phase difference between hall position sensor is 120 degree, three hall position sensors are according to rotating speed difference output pulse signal HA, HB, the HC of motor, shaping circuit feeds back to the mouth of catching of dsp chip after filtering, to adjust motor speed.
Accompanying drawing 2 is electric automobile speed control unit power major loop figure, this loop adopts three-phase full-controlled bridge mode, by 6 power MOSFET field effect transistor VT1-VT6, formed, under the control of control circuit, every 60 degree electrical degree commutations once, each field effect transistor of commutation, each field effect transistor conducting 120 degree electrical degree.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And these belong to apparent variation that spirit of the present utility model extended out or change still among protection range of the present utility model.
Claims (3)
1. an electric automobile speed control unit, comprise brshless DC motor, rotor-position sensor, control circuit, drive circuit, power conversion circuit, it is characterized in that rotor-position sensor is hall position sensor, be arranged on the armature of brshless DC motor, control circuit comprises power supply, processor and filtering shaping circuit, drive circuit comprises buffer circuit and power driving circuit, buffer circuit is transformer isolation circuit, the three-phase fully-controlled bridge circuit that power conversion circuit adopts 6 power MOSFET field effect transistor to form, hall position sensor sends pulse signal and connects processor through filtering shaping circuit, processor output control signal through buffer circuit to power driving circuit, power driving circuit driving power translation circuit, power conversion circuit output current is controlled brshless DC motor.
2. electric automobile speed control unit as claimed in claim 1, is characterized in that described processor adopting TMS320F2812DSP chip, and power driving circuit adopts IR2130 as driving chip.
3. electric automobile speed control unit as claimed in claim 2, it is characterized in that described processor also comprises advances, retreats and accelerator pedal signal input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621786.XU CN203574575U (en) | 2013-10-10 | 2013-10-10 | Electric vehicle speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621786.XU CN203574575U (en) | 2013-10-10 | 2013-10-10 | Electric vehicle speed control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574575U true CN203574575U (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320621786.XU Expired - Fee Related CN203574575U (en) | 2013-10-10 | 2013-10-10 | Electric vehicle speed control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294435A (en) * | 2017-07-17 | 2017-10-24 | 武汉豪岩照明电子有限公司 | The intensive frequency converter of three-phase synchronous motor |
| CN108163127A (en) * | 2017-12-08 | 2018-06-15 | 安徽登冠新能源电动车科技有限公司 | A kind of electric bicycle speed control system |
-
2013
- 2013-10-10 CN CN201320621786.XU patent/CN203574575U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294435A (en) * | 2017-07-17 | 2017-10-24 | 武汉豪岩照明电子有限公司 | The intensive frequency converter of three-phase synchronous motor |
| CN108163127A (en) * | 2017-12-08 | 2018-06-15 | 安徽登冠新能源电动车科技有限公司 | A kind of electric bicycle speed control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20141010 |
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| EXPY | Termination of patent right or utility model |