CN202565223U - Novel alternating-current asynchronous motor controller for all-electric car - Google Patents
Novel alternating-current asynchronous motor controller for all-electric car Download PDFInfo
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- CN202565223U CN202565223U CN2012202343587U CN201220234358U CN202565223U CN 202565223 U CN202565223 U CN 202565223U CN 2012202343587 U CN2012202343587 U CN 2012202343587U CN 201220234358 U CN201220234358 U CN 201220234358U CN 202565223 U CN202565223 U CN 202565223U
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Abstract
The utility model discloses a novel alternating-current asynchronous motor controller for an all-electric car. The novel alternating-current asynchronous motor controller comprises a control chip, a bus driver, a driving circuit, a three-phase inverter circuit, a motor, an over-voltage signal generating circuit, an over-current signal generating circuit, an over-temperature signal generating circuit, an IGBT (insulated gate bipolar transistor) fault signal, an AND gate and a sensor group, wherein the sensor group includes one or more speed sensors, one or more voltage sensors, one or more temperature sensors and one or more current sensors. The novel alternating-current asynchronous motor controller for the all-electric car realizes the functions of over-voltage, over-current, over-temperature and IGBT fault protection functions by the aid of hardware, the hardware is changed, the functions originally realized by software are realized by the hardware, the problems of processing delay, protection failure and the like are solved, the control chip is used for automatic control, manual operation in the whole process of signal acquisition and signal control is omitted, and the influence of human factors is avoided.
Description
Technical field
The utility model belongs to the power set field, and particularly a kind of novel pure electric sedan is used the AC induction motor controller.
Background technology
The AC induction motor controller is an energy conversion device between power accumulator group and the motor, and it is made up of external control signal interface circuit, power conversion circuit, control circuit and drive circuit etc.In order to guarantee the safety of electric automobile running, need monitor in real time drive system overvoltage, overcurrent, excess temperature and IGBT fault, and carry out the dock reason.
Traditional processing method is through reading electric current, voltage, temperature and IGBT fault-signal in real time; Sampling calculates voltage, electric current, temperature value according to AD in software; And the IGBT fault-signal of I/O sampling; Carry out error protection through judgement, and, unfavorable conditions such as protection inefficacy can occur because software processes can cause certain delay.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of prior art, and the novel pure electric sedan that provides and realize overvoltage, overcurrent on a kind of hardware, crosses gentle IGBT failure protection function is used the AC induction motor controller.
The purpose of the utility model realizes through following technical scheme: a kind of novel pure electric sedan is used the AC induction motor controller, and it comprises that control chip, bus driver, drive circuit, three-phase inverting circuit, motor, overvoltage signal generating circuit, over-current signal produce circuit, excess temperature signal generating circuit, IGBT fault-signal, AND door and sensor groups; Sensor groups comprises one or more velocity transducers, one or more voltage sensor, one or more temperature sensor and one or more current sensor; The PWM output signal end mouth of control chip is connected with motor through bus driver, drive circuit, three-phase inverting circuit successively; The signals collecting end of velocity transducer is gathered motor speed, and the signal output part of velocity transducer is connected with the CAP port of control chip; The signals collecting end of current sensor is gathered the motor stator electric current; The signal output part of current sensor is connected with the AD port I of control chip through operational amplifier treatment circuit I, and the AD port I of control chip also produces circuit through operational amplifier treatment circuit I, over-current signal successively and is connected with the AND door; The signals collecting end of voltage sensor is gathered the motor busbar voltage; The signal output part of voltage sensor is connected with the AD port II of control chip through operational amplifier treatment circuit II, and the AD port II of control chip also is connected with the AND door through operational amplifier treatment circuit II, overvoltage signal generating circuit successively; The signals collecting end acquisition controller and the motor temperature of temperature sensor; The signal output part of temperature sensor is connected with the AD port III of control chip through operational amplifier treatment circuit III, and the AD port III of control chip also is connected with the AND door through operational amplifier treatment circuit III, excess temperature signal generating circuit successively; Be connected with the IGBT fault-signal on the circuit between drive circuit and the AND door, the output of AND door is connected with the chip selection signal control end of bus driver.
The beneficial effect of the utility model is: the utility model provides and realizes overvoltage, overcurrent on a kind of hardware, crosses the novel pure electric sedan of gentle IGBT failure protection function and uses the AC induction motor controller; Change from hardware; The function that originally adopts software to handle is realized through hardware, solved problems such as handling time-delay, protection inefficacy, adopt control chip to control automatically; Be unartificial operation from signals collecting to the signal controlling overall process, avoided the human factor influence.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is that the utility model stator current over-current signal produces circuit;
Fig. 3 is the utility model busbar voltage overvoltage signal generating circuit;
Fig. 4 is the utility model temperature excess temperature signal generating circuit;
Fig. 5 is the utility model PWM latch cicuit one;
Fig. 6 is the utility model PWM latch cicuit two.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but the protection range of the utility model is not limited to the following stated.
As shown in Figure 1; A kind of novel pure electric sedan is used the AC induction motor controller, and it comprises that control chip, bus driver, drive circuit, three-phase inverting circuit, motor, overvoltage signal generating circuit, over-current signal produce circuit, excess temperature signal generating circuit, IGBT fault-signal, AND door and sensor groups; Sensor groups comprises one or more velocity transducers, one or more voltage sensor, one or more temperature sensor and one or more current sensor; The PWM output signal end mouth of control chip is connected with motor through bus driver, drive circuit, three-phase inverting circuit successively; The signals collecting end of velocity transducer is gathered motor speed, and the signal output part of velocity transducer is connected with the CAP port of control chip; The signals collecting end of current sensor is gathered the motor stator electric current; The signal output part of current sensor is connected with the AD port I of control chip through operational amplifier treatment circuit I, and the AD port I of control chip also produces circuit through operational amplifier treatment circuit I, over-current signal successively and is connected with the AND door; The signals collecting end of voltage sensor is gathered the motor busbar voltage; The signal output part of voltage sensor is connected with the AD port II of control chip through operational amplifier treatment circuit II, and the AD port II of control chip also is connected with the AND door through operational amplifier treatment circuit II, overvoltage signal generating circuit successively; The signals collecting end acquisition controller of temperature sensor and motor temperature signal; The signal output part of temperature sensor is connected with the AD port III of control chip through operational amplifier treatment circuit III, and the AD port III of control chip also is connected with the AND door through operational amplifier treatment circuit III, excess temperature signal generating circuit successively; Be connected with the IGBT fault-signal on the circuit between drive circuit and the AND door, the output of AND door is connected with the chip selection signal control end of bus driver.
The course of work of the utility model:
When carrying out Electric Machine Control, detect the degree of depth of direction signal, guard signal and pedal, set up corresponding relation, according to these data output d, q shaft current set-point, i.e. target current with the motor target torque value; Go out motor actual d, q shaft current to the three-phase current of current motor through park variation and clark transformation calculations; The input of target current and actual current difference, regulate output d, q shaft voltage through PI as electric current loop; Detect the motor rotor rate signal simultaneously and calculate rotor-position, be used for contrary park conversion, modulation is converted into duty ratio output through SVPWM at last, the rotation of control motor.
The pwm signal of control chip TMS320LF2407A output is connected with motor through bus driver, drive circuit, three-phase inverting circuit successively; After current sensor collected the motor stator electric current, through being connected to the AD port I of control chip after the processing of operational amplifier treatment circuit I, operational amplifier treatment circuit I also was connected to and door (an AND door) through the overcurrent signal generating circuit; After voltage sensor collected busbar voltage, process operational amplifier treatment circuit II was connected to the AD port II of control chip, and operational amplifier treatment circuit II also is connected to and door (an AND door) through the overvoltage signal generating circuit; After temperature sensor collected controller and motor temperature, process operational amplifier treatment circuit III was connected to the AD port III of control chip, and operational amplifier treatment circuit III also is connected to and door (an AND door) through the excess temperature signal generating circuit; The IGBT fault-signal is connected to and door (AND door) through overdrive circuit; These fault-signals through with door (AND door) after, forms the chip selection signal pin that a total guard signal is connected to bus driver, thereby controls the output of pwm signal.
It is as shown in Figure 2 that the stator current over-current signal produces circuit.When stator current during greater than IH, comparator U15A output low level; When stator current during less than IL, comparator U15B output low level.When stator current greater than IH or during less than IL, low level signal of comparator output, promptly the stator current absolute value greater than certain value after, low level signal of comparator output is delivered to 12 pin with door 74ALS30, and is as shown in Figure 5.Connect a pull-up resistor with 12 pin of door 74ALS30, during fault-free with the door 74ALS30 12 pin on input high level.
Busbar voltage overvoltage signal generating circuit is as shown in Figure 3.The busbar voltage sampled value is during greater than VU_REF, comparator U19A output low level, and after busbar voltage is greater than certain value, low level signal of comparator output, and be sent to 6 pin with a 74ALS30, as shown in Figure 5.Connect a pull-up resistor with 6 pin of door 74ALS30, during fault-free with the door 74ALS30 6 pin on input high level.
Controller or motor temperature overvoltage signal generating circuit are as shown in Figure 4.The temperature sampling value is during greater than TEMP_REF, comparator U18A output low level.After controller or motor temperature were greater than certain value, low level signal of comparator output is delivered to 5 pin with door 74ALS30, and was as shown in Figure 5.Connect a pull-up resistor with 5 pin of door 74ALS30, during fault-free with the door 74ALS30 5 pin on input high level.
As shown in Figure 5, three road IGBT fault-signals are to transfer to 1,2,3 pin with door 74ALS30 through the drive plate collection, connect a pull-up resistor with 1,2,3 pin of door 74ALS30, during fault-free with 1,2,3 pin of door 74ALS30 on input high level.
As shown in Figure 6, above-mentioned process and the synthetic total error protection signal of the signal of door 74ALS30 output to bus driver 74ACT245 chip selection signal pin, control the output of pwm signal.
Claims (1)
1. a novel pure electric sedan is used the AC induction motor controller, it is characterized in that: it comprises that control chip, bus driver, drive circuit, three-phase inverting circuit, motor, overvoltage signal generating circuit, over-current signal produce circuit, excess temperature signal generating circuit, IGBT fault-signal, AND door and sensor groups; Sensor groups comprises one or more velocity transducers, one or more voltage sensor, one or more temperature sensor and one or more current sensor; The PWM output signal end mouth of control chip is connected with motor through bus driver, drive circuit, three-phase inverting circuit successively; The signals collecting end of velocity transducer is gathered motor speed, and the signal output part of velocity transducer is connected with the CAP port of control chip; The signals collecting end of current sensor is gathered the motor stator electric current; The signal output part of current sensor is connected with the AD port I of control chip through operational amplifier treatment circuit I, and the AD port I of control chip also produces circuit through operational amplifier treatment circuit I, over-current signal successively and is connected with the AND door; The signals collecting end of voltage sensor is gathered the motor busbar voltage; The signal output part of voltage sensor is connected with the AD port II of control chip through operational amplifier treatment circuit II, and the AD port II of control chip also is connected with the AND door through operational amplifier treatment circuit II, overvoltage signal generating circuit successively; The signals collecting end acquisition controller and the motor temperature of temperature sensor; The signal output part of temperature sensor is connected with the AD port III of control chip through operational amplifier treatment circuit III, and the AD port III of control chip also is connected with the AND door through operational amplifier treatment circuit III, excess temperature signal generating circuit successively; Be connected with the IGBT fault-signal on the circuit between drive circuit and the AND door, the output of AND door is connected with the chip selection signal control end of bus driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202343587U CN202565223U (en) | 2012-05-23 | 2012-05-23 | Novel alternating-current asynchronous motor controller for all-electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202343587U CN202565223U (en) | 2012-05-23 | 2012-05-23 | Novel alternating-current asynchronous motor controller for all-electric car |
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| Publication Number | Publication Date |
|---|---|
| CN202565223U true CN202565223U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202343587U Expired - Fee Related CN202565223U (en) | 2012-05-23 | 2012-05-23 | Novel alternating-current asynchronous motor controller for all-electric car |
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| Country | Link |
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| CN (1) | CN202565223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684596A (en) * | 2012-05-23 | 2012-09-19 | 东方电气集团东风电机有限公司 | Novel alternating current asynchronous motor controller for pure electric car |
| CN105552836A (en) * | 2016-01-22 | 2016-05-04 | 重庆大唐国际武隆水电开发有限公司 | Bearing bush temperature protection system of hydraulic power plant and protection method |
-
2012
- 2012-05-23 CN CN2012202343587U patent/CN202565223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684596A (en) * | 2012-05-23 | 2012-09-19 | 东方电气集团东风电机有限公司 | Novel alternating current asynchronous motor controller for pure electric car |
| CN105552836A (en) * | 2016-01-22 | 2016-05-04 | 重庆大唐国际武隆水电开发有限公司 | Bearing bush temperature protection system of hydraulic power plant and protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161027 Address after: 614000 Yingbin Road 9, hi tech Zone, Sichuan, Leshan Patentee after: Dongfang Electric (Leshan) new energy equipment Co., Ltd. Address before: Gou Zhen Qiao Qiao Gou Wutongqiao District Street 614802 Sichuan city of Leshan Province Patentee before: DEC Dongfeng Electric Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20190523 |