CN102684596A - Novel alternating current asynchronous motor controller for pure electric car - Google Patents
Novel alternating current asynchronous motor controller for pure electric car Download PDFInfo
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- CN102684596A CN102684596A CN2012101620731A CN201210162073A CN102684596A CN 102684596 A CN102684596 A CN 102684596A CN 2012101620731 A CN2012101620731 A CN 2012101620731A CN 201210162073 A CN201210162073 A CN 201210162073A CN 102684596 A CN102684596 A CN 102684596A
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Abstract
The invention discloses a novel alternating current asynchronous motor controller for a pure electric car. The novel alternating current asynchronous motor controller comprises a control chip, a bus driver, a drive circuit, a three-phase inverter circuit, a motor, an overvoltage 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. The sensor group comprises one or more speed sensors, one or more voltage sensors, one or more temperature sensors and one or more current sensors. The invention provides the novel alternating current asynchronous motor controller for the pure electric car for achieving over-voltage, over-current, over-temperature and IGBT fault protection function on hardware, changes from the hardware, and achieves the function of adopting software to process in the prior art through hardware so as to solve the problems of processing delay, protection failure and the like.. By adopting automatic control of the control chip, non-artificial operation is realized in the whole process from signal collection to signal control, so that the effect of personal factors is avoided.
Description
Technical field
The invention belongs to the power set field, 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.
Summary of the invention
The object of the invention 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 object of the invention is realized 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 invention has the beneficial effects as follows: the present invention 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 a structured flowchart of the present invention;
Fig. 2 produces circuit for stator current over-current signal of the present invention;
Fig. 3 is a busbar voltage overvoltage signal generating circuit of the present invention;
Fig. 4 is a temperature excess temperature signal generating circuit of the present invention;
Fig. 5 is a PWM latch cicuit one of the present invention;
Fig. 6 is a PWM latch cicuit two of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description, but protection scope of the present invention 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 present invention:
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101620731A CN102684596A (en) | 2012-05-23 | 2012-05-23 | Novel alternating current asynchronous motor controller for pure electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101620731A CN102684596A (en) | 2012-05-23 | 2012-05-23 | Novel alternating current asynchronous motor controller for pure electric car |
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| CN102684596A true CN102684596A (en) | 2012-09-19 |
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| CN2012101620731A Pending CN102684596A (en) | 2012-05-23 | 2012-05-23 | Novel alternating current asynchronous motor controller for pure electric car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731086A (en) * | 2013-12-12 | 2014-04-16 | 大连天元电机股份有限公司 | Motor control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112294A (en) * | 1999-10-04 | 2001-04-20 | Toyota Motor Corp | Failure detecting system |
| CN101416330A (en) * | 2003-10-14 | 2009-04-22 | 布莱克和戴克公司 | Protection methods, protection circuits and protection devices for secondary batteries, a power tool, charger and battery pack adapted to provide protection against fault conditions in the battery pac |
| EP2192683A2 (en) * | 2008-11-26 | 2010-06-02 | Honda Motor Co., Ltd | Phase current estimation device of motor and magnetic pole position estimation device of motor |
| CN201656900U (en) * | 2009-12-28 | 2010-11-24 | 南昌大学 | Universal vector controller of AC asynchronous motor |
| CN202565223U (en) * | 2012-05-23 | 2012-11-28 | 东方电气集团东风电机有限公司 | Novel alternating-current asynchronous motor controller for all-electric car |
-
2012
- 2012-05-23 CN CN2012101620731A patent/CN102684596A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112294A (en) * | 1999-10-04 | 2001-04-20 | Toyota Motor Corp | Failure detecting system |
| CN101416330A (en) * | 2003-10-14 | 2009-04-22 | 布莱克和戴克公司 | Protection methods, protection circuits and protection devices for secondary batteries, a power tool, charger and battery pack adapted to provide protection against fault conditions in the battery pac |
| EP2192683A2 (en) * | 2008-11-26 | 2010-06-02 | Honda Motor Co., Ltd | Phase current estimation device of motor and magnetic pole position estimation device of motor |
| CN201656900U (en) * | 2009-12-28 | 2010-11-24 | 南昌大学 | Universal vector controller of AC asynchronous motor |
| CN202565223U (en) * | 2012-05-23 | 2012-11-28 | 东方电气集团东风电机有限公司 | Novel alternating-current asynchronous motor controller for all-electric car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731086A (en) * | 2013-12-12 | 2014-04-16 | 大连天元电机股份有限公司 | Motor control device |
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Application publication date: 20120919 |