CN205051618U - Electric motor controller of electric automobile - Google Patents

Abstract

The utility model discloses an electric motor controller of electric automobile, keep off the preset circuit in position, communication circuit and liquid crystal display module including core circuit, PWM drive circuit, PMSM PMSM, main circuit, detection circuitry, protection circuit, the preset circuit of electron throttle, electron, be equipped with the DSP chip in the core circuit, the model of DSP chip is TMS320LF2407A, the utility model discloses the cooperation that utilizes DSP chip TMS320LF2407A and PWM drive circuit, PMSM PMSM, main circuit, detection circuitry, protection circuit, the preset circuit of electron throttle, electron to keep off the preset circuit in position, communication circuit and liquid crystal display module has realized powerful control function, increases electric protection, system protection's design simultaneously in the circuit, the reliability, the security that have improved the controller greatly, the flexible operation is convenient, is favorable to debugging and control.

Description

A kind of electric vehicle motor controller

Technical field

The utility model relates to a kind of controller, particularly relates to a kind ofly to be exclusively used in electric machine controller used for electric vehicle.

Background technology

The oil crisis of 20 century 70s and day by day serious environmental pollution make automotive engineering just experiencing the important technical changes such as power electric gasification, fuel diversification, the electric automobile with energy-efficient, low emission or zero discharge advantage is subject to the extensive attention of countries in the world, be the Main way of international energy-saving and environment-friendly automobile development, many countries all start to drop into substantial contribution exploitation electric automobile in the world; Electric automobile is owing to having low emission even zero discharge, low noise and the advantage such as energy-conservation, one of focus become current automotive research, developing and apply;

Modern electric automobile has merged the comprehensive product of the multiple new and high technologies such as electric power, electronics, Mechanical course and Chemical Engineering Technology, and be clean effective urban transportation tool 21 century, it take electric power as power, can solve the problem that petroleum resources are day by day exhausted; As clean, energy-conservation new traffic tool, electric motor car has impayable advantage, be the vehicle uniquely can accomplishing " zero discharge ", it does not pollute in driving process, and thermal radiation is low, noise is little, do not consume gasoline, can apply various energy resources, structure is simple, easy maintenance, is therefore subject to the welcome of countries in the world;

The key issue of electric automobile is the continual mileage that once charges, at present under vehicular electricity storage pool technology fails the condition that breaks through, the drive system of electric automobile is the key factor realizing electric automobile key property and solve this key issue, this requires that drive system of electric automobile should have torque density high as far as possible, good direct torque ability, higher operational reliability and send out in scope in whole electric automobile speed governing there is efficiency high as far as possible, electric automobile drives the realization design motor of function, power electronics, microprocessor, the multidisciplinary field such as storage battery, it is the key of catching up with and surpassing world car industry advanced level, therefore systematically study and develop high-caliber motor-driven control system, to raising China drive system of electric automobile level, to the practical of China's electric automobile and industrialization significant,

Permagnetic synchronous motor is drive motors conventional in electric automobile, the quality of its control system directly has influence on the performance of whole system, in order to provide powerful function, safety, reliability support to permagnetic synchronous motor, we are studied the control system of magneto.

Utility model content

The utility model is in order to make up the deficiencies in the prior art, meet the needs of prior art, there is provided a kind of electric vehicle motor controller, this control system can provide powerful controlling functions for permagnetic synchronous motor, improves the reliability of Permanent Magnet Synchronous Motor Controller, fail safe;

For achieving the above object, the technical scheme that the utility model is taked is:

A kind of electric vehicle motor controller, comprise core circuit, PWM drive circuit, permagnetic synchronous motor PMSM, main circuit, testing circuit, protective circuit, E-Gas given circuit, electronics gear given circuit, telecommunication circuit and LCD MODULE, it is characterized in that: in described core circuit, be provided with dsp chip; High speed photo coupling device is provided with in described PWM drive circuit; Described main circuit comprises DC power supply and Intelligent Power Module; Described DC power supply is connected with Intelligent Power Module; Described testing circuit comprises current detection circuit, voltage detecting circuit and velocity checking circuits PG; Described current detection circuit is connected with intelligent function module, permagnetic synchronous motor PMSM, core circuit, system protection circuit respectively; Described voltage detecting circuit is connected with direct current component, core circuit respectively; Described protective circuit comprises overcurrent protection circuit and system protection circuit; Described overcurrent protection circuit is connected with DC power supply, voltage detecting circuit, system protection circuit respectively; Described system protection circuit is also connected with core circuit; Described PWM drive circuit is connected with core circuit, Intelligent Power Module respectively; Described E-Gas given circuit is connected with core circuit; Described core circuit is also connected with electronic gear given circuit; Described LCD MODULE is connected with core circuit; Described telecommunication circuit is connected with core circuit; Described telecommunication circuit is also connected with outside host computer;

Further improvement, the model of described dsp chip is TMS320LF2407A; Described dsp chip is 16 fixed-point number signal processing chips;

Further improvement, is provided with LEM Hall current sensor device in described current detection circuit, its model is LT58-S7, and operating voltage is ± 15V, and the specified effective value electric current in former limit is 50A, and the specified effective value electric current of secondary is 50mA;

Further improvement, is provided with Hall voltage transducer in described voltage detecting circuit, its model is LV28-P;

Further improvement, is provided with photoelectric encoder in described velocity checking circuits PG; Described photoelectric encoder is incremental optical-electricity encoder; Described photoelectric encoder is connected with dsp chip;

Further improvement, described overcurrent protection circuit comprises overvoltage crowbar for carrying out voltage protection, for carrying out the current foldback circuit of current protection and the power-on protective circuit for the protection of DC bus-bar voltage;

Further improvement, the model of described LCD MODULE is TM12232;

Further improvement, described DC power supply is 500V direct-flow storage battery;

Further improvement, the model of described Intelligent Power Module is PM75CLA060;

Further improvement, the model of described high speed photo coupling device is HCPL4504;

Compared with prior art, adopt such scheme, the beneficial effects of the utility model are: the utility model utilizes the high-speed computation ability of dsp chip TMS320LF2407A to ensure that the realization of complicated control algolithm, by dsp chip and peripheral resource, comprise PWM drive circuit, permagnetic synchronous motor PMSM, main circuit, testing circuit, protective circuit, E-Gas given circuit, electronics gear given circuit, the cooperation of telecommunication circuit and LCD MODULE, achieve powerful controlling functions, increase overcurrent protection in circuit simultaneously, the design of system protection, substantially increase the reliability of controller, fail safe, whole controller architecture is simple, powerful, flexible and convenient operation, is conducive to debugging and monitoring.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is electrical block diagram of the present utility model;

Fig. 3 is the pin block diagram of dsp chip in the utility model;

Fig. 4 is the connecting circuit figure of dsp chip and LWM drive circuit in the utility model;

Fig. 5 is current detection circuit structural representation in the utility model;

Fig. 6 is voltage detecting circuit structural representation in the utility model;

Fig. 7 is photoelectric pulse coder output map in the utility model;

Fig. 8 is A phase current foldback circuit structural representation in the utility model;

Fig. 9 is overvoltage crowbar structural representation in the utility model;

Figure 10 is power-on protective circuit structural representation in the utility model;

Figure 11 is system protection circuit structural representation in the utility model;

Figure 12 is E-Gas given circuit structural representation in the utility model;

Figure 13 is electronic gear given circuit structural representation in the utility model;

Figure 14 is telecommunication circuit structural representation in the utility model;

Figure 15 is LCD MODULE electrical block diagram in the utility model;

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

As shown in Figure 1 and Figure 2, a kind of electric vehicle motor controller, comprises core circuit, PWM drive circuit, permagnetic synchronous motor PMSM, main circuit, testing circuit, protective circuit, E-Gas given circuit, electronics gear given circuit, telecommunication circuit and LCD MODULE; Dsp chip is provided with in described core circuit; High speed photo coupling device is provided with in described PWM drive circuit; Described main circuit comprises DC power supply and Intelligent Power Module; Described DC power supply is connected with Intelligent Power Module; Described testing circuit comprises current detection circuit, voltage detecting circuit and velocity checking circuits PG; Described current detection circuit is connected with intelligent function module, permagnetic synchronous motor PMSM, core circuit, system protection circuit respectively; Described voltage detecting circuit is connected with direct current component, core circuit respectively; Described protective circuit comprises overcurrent protection circuit and system protection circuit; Described overcurrent protection circuit is connected with DC power supply, voltage detecting circuit, system protection circuit respectively; Described system protection circuit is also connected with core circuit; Described PWM drive circuit is connected with core circuit, Intelligent Power Module respectively; Described E-Gas given circuit is connected with core circuit; Described core circuit is also connected with electronic gear given circuit; Described LCD MODULE is connected with core circuit; Described telecommunication circuit is connected with core circuit; Described telecommunication circuit is also connected with outside host computer;

1, the setting of core circuit

Mainly adopt dsp chip as control device, preferably, the model of described dsp chip is TMS320LF2407A; Described dsp chip is 16 fixed-point number signal processing chips;

Dsp chip selected by the utility model is produced by TI company, why selects this chip, is because it adopts high performance CMOS technology, makes supply power voltage drop to 3.3V; It is based on the Kazakhstan not structure improved, and the execution speed of 40MIPS makes single command cycle be only 25ns; It has igh-speed wire-rod production line and digital control function; Meanwhile, it is also integrated with the peripheral functionality needed for monolithic Motor control Application scheme, can effectively reduce system element quantity; Task manager support in LF2407A sheet for motor provide at a high speed, the Advanced Control Techniques of efficient and full speed change; Also have 47 programmable I/O pins in addition; Its concrete structure as shown in Figure 3;

DSP hardware resource involved by the utility model comprises: task manager (EVA/B) module, ADC module, SCI module;

1), event manager module: each 24x device comprises two task manager EVA and EVB, and each event manager module comprises general purpose timer, comparing unit, capturing unit and quadrature coding pulse circuit; LF2407A has 4 general purpose timers, each general purpose timer, by Timer Controlling register configuration, has overflow, underflow, cycle, compares interrupt resources in four; GP timer is base when other submodules provide simultaneously, T1 and T3 is applicable to all comparing units and pwm circuit, T2 and T4 is applicable to capturing unit and orthogonal pulses counting operation;

Full comparing unit utilizes programmable dead zone function circuit programming to produce the output of 6 road PWM waveforms generations, and it is 0 ~ 2048 cpu clock cycle that the PWM of band dead zone function exports length, and the converted quantity of pulse duration is minimum is a cpu clock cycle; Can protection be driven to interrupt by responding power; 4 comparators of LF2407A can produce four additional independent relatively or High-Accuracy PWM waveform;

Capturing unit provides the capturing function to different time or saltus step, and rising edge saltus step and trailing edge saltus step are caught in realization able to programme; When catching input pin and saltus step being detected, T2 or T3 is captured and is stored in two-stage FIFP storehouse; Two QEP circuit interfaces of catching input CAPI/2 and can be used for orthogonal encoder pulse;

2) ADC module:

Analog-to-digital conversion module comprises 10 Bits Serial analog-to-digital conversion modules of two built-in sampling hold circuits of band, nearly 16 road analog input channels, are operated in the sorting unit pattern that can be selected at most 16 passages after can selecting work alone double sequence pattern or the cascade of maximum 8 passages; LF2407A has two secondary FIFO result registers for depositing transformational structure; Analog-to-digital conversion can be started by multiple trigger source, and reference voltage is provided by outside;

3) SCI module:

SCI module is a high speed, synchronous serial I/O mouth, it is generally used for the communication between dsp controller and external equipment or another processor, support multiprocessor communication, for guaranteeing the integrality of data, the data of SCI to reception carry out the inspection that discontinuity detection, parity, time-out and frame are made mistakes;

2, the setting of main circuit

Main circuit is the energy source of permagnetic synchronous motor; Main circuit mainly refers to collector ring joint and three-phase inversion link; In rectification link, the utility model adopts 500V direct-flow storage battery directly to provide electric energy as DC power supply, does not need rectification; Intelligent Power Module (IPM) is then have employed in inversion link; IPM is advanced hybrid integrated power device, is made up of high speed, the igbt chip of low consumption and the gate-drive of optimization and protective circuit; Preferably, in this control system, described Intelligent Power Module has selected Mitsubishi to produce, and model is the IPM chip of PM75CLA060, and rated voltage and the rated current of this chip are respectively 600V and 75V;

Because IPM inside is integrated with the drive circuit of IGBT, so the pwm signal that DSP exports directly can be exported IPM after light-coupled isolation in use, preferably, IPM isolation drive selects high speed photo coupling HCPL4504; Meanwhile, IPM requires to provide the four separate+15V direct currents in tunnel for the IGBT drive circuit of inside, wherein, the upper pipe Ge Yong mono-road power supply of A, B, C three-phase brachium pontis, the lower pipe of three-phase brachium pontis then shares a road power supply; PM75CLA060 isolated drive circuit as shown in Figure 4;

PM75CLA060 inside has SC (short circuit), OC (overcurrent), UV (under-voltage), OT (overheated) four kinds of self-protection circuits; If have a kind of action in above four kinds of circuit, the IGBT that stays in three-phase brachium pontis will turn off at once, and IPM can export a corresponding fault-signal to notify dsp controller simultaneously; In IPM A, B, C three-phase brachium pontis each on manage and have independently SC, OC, UV, OT protective circuit respectively, lower three pipes of three-phase brachium pontis then share a protective circuit, and export so have 4 guard signals in whole IPM module, they are U respectively _eO, V _eO, W _eOand FO, this four roads signal will, first through light-coupled isolation, can Jiang Zhe tetra-road signal synthesis be also that P_IPM signal outputs to DSP's when arranging the control circuit of this controller when exporting to external devices pin, so that the pwm signal blocking DSP during fault in time;

3, the setting of testing circuit

The object of testing circuit is the various signals in order to detect, through changing the digital model becoming DSP and can identify, testing circuit is divided into current detection circuit, voltage detecting circuit and velocity checking circuits PG, these signals are all the peripheral circuit interfaces of the circuit interface access DSP by periphery, then arrange according to corresponding, read the concrete numerical value detected;

1), current detection circuit

Its particular circuit configurations as shown in Figure 5, is provided with LEM Hall current sensor device, preferably in described current detection circuit, the model of described Hall current sensor is LT58-S7, operating voltage is ± 15V, and the specified effective value electric current in former limit is 50A, and the specified effective value electric current of secondary is 50mA; This LEM Hall current sensor is produced by Beijing lime company, detects A phase, B phase current, obtain current signal by two LEM modules; Through change-over circuit, become the voltage signal of 0 ~ 3.3V, the A/D module being input to DSP becomes it into corresponding numerical value, and remains in numerical register; In Figure 5, VR3 resistance is used to conditioning signal amplitude, and VR4 resistance is used to the side-play amount of conditioning signal, by the adjustment of these two resistance, signal can be adjusted between 0 ~ 3.3V, then be sent into DSP; Voltage-stabiliser tube in Fig. 5 is to prevent the signal sending into DSP more than 3.3V, and damages DSP;

2), voltage detecting circuit

Its particular circuit configurations as shown in Figure 6, is provided with Hall voltage transducer in described voltage detecting circuit, its model is LV28-P; This voltage detecting circuit is direct voltage testing circuit, by being connected on the Hall voltage transducer LV28-P of rectifier output end to detect DC bus-bar voltage, its principle is that original edge voltage is converted to primary current by former limit resistance, the magnetic flux that this electric current produces and the Hall voltage magnetic flux through amplifying the secondary current that produces and being produced by secondary coil is balanced each other, and secondary current accurately reflects original edge voltage;

3), velocity checking circuits

Photoelectric encoder is provided with in described velocity checking circuits PG; Described photoelectric encoder is incremental optical-electricity encoder; Described photoelectric encoder is connected with dsp chip;

For speed regualtion of AC motor, the measurement of electric machine speed regulation forms one of velocity close-loop control extremely the key link, TMS320LF2407A has quadrature decoder circuit and capturing unit, they can directly be connected with photoelectric encoder, export pulse detection go out motor movement direction and speed by encoder;

According to the relation of pulse and corresponding angle, mixed photoelectric encoder three class that photoelectric encoder is usually divided into incremental optical-electricity encoder, absolute optical encoder and will be combined as a whole both above-mentioned;

Incremental optical-electricity encoder is actually the angular measurement sensor be made up of pulse generator and related circuit thereof; Pulse generator connects with measured axis is rigid; The rotating shaft pulse generator that often rotates a circle exports a fixing umber of pulse, because its frequency exporting pulse is directly proportional to rotating speed;

In the utility model, preferably, described incremental optical-electricity encoder adopts domestic LEC incremental pulse encoder, exports X, Y, Z three-phase signal, and it is identical that X with Y two phase signals often transfers out umber of pulse; But both phase 90 degree, by checking which is turned to mutually in advance, control signal controls forward-backward counter paired pulses and counts up or down, and Z phase signals is also called zero signal, often turn and only export a burst pulse, requiring that the occasion of locating uses this signal; The signal exported from pulse coder is input to DSP after photoelectric coupling isolation and the shaping of Schmidt's not gate; Its particular circuit configurations as shown in Figure 7;

TMS320LF2407A only has 2 groups to the relevant pin that tests the speed, wherein first group comprises CAP1/QEP1, CAP2/QEP2, quadrature decoder circuit and capturing unit share two input pins, therefore need correct configuration to catch control register CAPCON carry out enable quadrature decoder circuit and forbid capturing unit, thus corresponding pin assignments to QEP circuit, wherein QEP inside circuit is provided with and turns to differentiation and double frequency function, no longer need other auxiliary circuits, interface circuit design is very simple, QEP coordinates with the powerful general timing of LF2407A, can flexible Application in the various method tested the speed,

The utility model adopts T2 general purpose timer as the time base of QEP circuit, and arranging T2 is directed increasing/size reduction mode, and using quadrature coding pulse circuit as clock source; Two row orthogonal coding input pulse two edges are all by quadrature coding pulse circuit count, and therefore, the clock frequency of generation is 4 times of each list entries, and using the input clock of this clock as T2;

4, overcurrent protection circuit

Described overcurrent protection circuit comprises overvoltage crowbar for carrying out voltage protection, for carrying out the current foldback circuit of current protection and the power-on protective circuit for the protection of DC bus-bar voltage;

In the utility model, inverter in main circuit has just used the IPM of Mitsubishi as switch element, by realizing controlling output voltage and frequency to its regular break-make, the magnetomotive force that the just profound electric current ensureing to inject stator produces and rotor field keep 90 degree in real time, thus realize the vector control of permagnetic synchronous motor; System is normally run must have voltage and current to protect;

1), current foldback circuit

Overcurrent is the one of the main reasons causing power device to damage, and when main circuit carries out current detecting, once overcurrent major loop being detected, should block control signal immediately and export, notice DSP turns off all control signals and reports to the police; Overcurrent detects the Schmidt trigger that protective circuit adopts band return difference on hardware, and given value of current value and detected value give the comparator of band return difference simultaneously, just turn off IPM in limited time, and take appropriate measures when detected value exceedes; Its concrete structure as shown in Figure 8; Overcurrent protection in other loops therewith circuit structure is identical;

2), overvoltage crowbar

Overvoltage reason is produced owing to there is the excessive formation peak voltage of curent change di/dt etc., for making system stable operation must design voltage protective circuit, when voltage exceedes the scope of permission, power device or motor stator winding will be burnt, therefore when there is overvoltage, output signal must be closed immediately, and same alarm; Its particular circuit configurations as shown in Figure 9;

3) power-on protective circuit

In actual applications, when controller powers on, the rapid rising of DC bus-bar voltage can produce greater impact to storage capacitor and IPM, for this reason, in the utility model, add the design of power-on protective circuit, when a system is powered up, alternating current charges to electric capacity C6 through resistance R14 after rectification, DC bus-bar voltage equals the slow rising from 0V of electric capacity both end voltage, so just efficiently avoid the generation of due to voltage spikes; But control when normally running, the existence of R14 can cause very large energy dissipation, therefore, can the power tube Q3 conducting in parallel at the two ends of R14, by resistance R14 short circuit to reduce power consumption; Its particular circuit configurations as shown in Figure 10;

5, system protection circuit

System occurs that overcurrent, overvoltage and power driver module fault etc. are regarded as Hard failure signals, circuit protection carries out for detection architecture, when a fault has occurred, protective circuit action, directly block control signal on the one hand to export, notice CPU closing control signal, realizes shutting down and providing display information on the other hand, this requires, the I/O mouth of each road fault-signal input TMS320LF3407A, judge which kind of fault and provide display information by DSP; Its concrete structure as shown in figure 11, inputs DSP's fault-signal pin, works as pin when being dragged down, can produce an external interrupt, the task manager output pin of at this moment all DSP will be high-impedance state by hardware setting, and whole chip quits work, and reaches the object of protection;

6, E-Gas given circuit

In the utility model, this circuit adopts slide rheostat simulated automotive throttle, is controlled the change of motor output torque by the resistance changing slide rheostat, thus realizes the actions such as the startup of automobile, acceleration and climbing; As shown in figure 12, the follow circuit be made up of amplifier ensures that the current potential of potentiometer VR7 sends into ADC change-over circuit pin ADCIN6 accurately to E-Gas given circuit structure, therefore, can regulate given throttle continuously by the current potential changing potentiometer VR7;

7, electronic gear given circuit:

In the utility model, this circuit adopt the I/O mouth simulated automotive gear of DSP realize automobile advance, fall back, the action such as neutral and parking, as shown in figure 13, IOPE1 simulates low gear to particular circuit configurations, and IOPE2 simulates middling speed gear, IOPE3 simulates high gear, IOPE4 simulation reversion gear, IOPE5 simulation idle running gear, IOPE6 simulates parking gear, and six I/O mouths pass through or deliver to the external interrupt XINT1 of DSP behind the door, that is:

When initial condition, IOPE1 ~ IOPE6 is by exclusion ground connection, when the switch of gear corresponding on Drawing switch, IOPE connects+3.3V level, becomes high level, now, OUT is also high level, and the external interrupt pin XINT1 of the external pin connection of OUT catches rising edge pulse and enters external interrupt, by the state of the I/O mouth of inquiry IOPE1 ~ IOPE6 in interrupt routine, determine the gear inputted, thus operate accordingly;

8, communicating circuit

This circuit is actually the communicating circuit of DSP and host computer, TMS320LF2407A device inside comprises the digital communication that serial communication structure SCI module is supported between CPU and other asynchronous peripheral using reference format, it usually and computer form master-slave system, they have divided the work different tasks; Wherein, DSP has been mainly used to motor stator voltage, current sample carry out A/D conversion, coordinate transform, the complex calculation of vector control and PWM to them and export, multiple monitoring device in calculating simulation circuit automobile, mainly completes structure display, data backup;

This circuit is selected MAX232 device to complete between DSP serial communication interface and RS232 serial port to carry out asynchronous communication, MAX232 chip power-consumption is low, integrated level is high, + 5V powers, there are two receive and sendaisle, because TMS320LF2407A adopts+3.3V to power, so added the typical level matching circuit that TI company provides between MAX232 and DAP; Its concrete structure as shown in figure 14;

9, LCD MODULE

In this modular circuit, preferably, the model of described LCD MODULE is TM12232; Adopt the speed of this TM12232 module simulation automobile, torque instrument, in order to show rotating speed, the torque of current motor in real time, its circuit structure as shown in figure 15;

The embedded SED1520 liquid crystal driver of TM12232 LCD MODULE, it is a kind of dot matrix graphic LCD driver, it can directly be connected with microprocessor, integrate row, column driver, therefore very convenient to use, be widely used in the less LCD MODULE of dot matrix number as built-in controller; What this circuit made full use of TMS320LF2407A enriches I/O mouth, drives LCD panel by SED1520;

The utility model is the controller of core with permagnetic synchronous motor (PMSM) and DSP; The fixed-point DSP chip TMS320LF2407A that vector control algorithm is produced by TI company realizes, DC power supply adopts 500V storage battery to provide, the IPM module PM75CLA060 that power model adopts Mitsubishi to produce, permagnetic synchronous motor then adopts three line connected modes, zero-sequence current is zero, control system only need measure biphase current, and another phase can calculate; Phase current i _aand i _cdetect respectively by two Hall current sensor LT58-T7, bandwidth can reach 100KHZ, linearity <1%; Current signal sends into the ADC (analog digital converter) of DSP after low-pass filtering treatment; Meanwhile, the voltage and current of DC side is also detected by instrument transformer and processes, and sends into the ADC of DSP; The tach signal of motor is measured by photoelectric coded disk, sends into the QEP (quadrate encode module) of DSP after level conversion; Whole control system can take the different modes that tests the speed according to the difference of rotating speed, can obtain enough tachometric survey precision with Guarantee control system in whole speed adjustable range;

DSPDE6 road PWM exports after driving, isolating, for driving IPM; The built-in variable value of DSP converts analog signal to by a four-way DAC, delivers to oscilloscope, can each variable situation in measurement vector control algolithm;

In addition, the utility model is also provided with human-computer exchange circuit, mainly comprises LCD MODULE, is also provided with keyboard interface circuit simultaneously, allows user to carry out information interaction in debug process and between controller, as input Setting signal, change pid parameter etc.; By the signal of 10 AD channel acquisition E-Gas of DSP inside; By I/O mouth input electronic gear signal etc.; Import each data in DSP into host computer by RS232 module, record, preserve and analyze these signals, the debugging improve for driving control system provides actual foundation;

The utility model utilizes the high-speed computation ability of dsp chip TMS320LF2407A to ensure that the realization of complicated control algolithm, by dsp chip and peripheral resource, comprise the cooperation of PWM drive circuit, permagnetic synchronous motor PMSM, main circuit, testing circuit, protective circuit, E-Gas given circuit, electronics gear given circuit, telecommunication circuit and LCD MODULE, achieve powerful controlling functions, increase the design of overcurrent protection, system protection simultaneously in circuit, substantially increase the reliability of controller, fail safe; Whole controller architecture is simple, powerful, flexible and convenient operation, is conducive to debugging and monitoring;

The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection range of the present utility model.

Claims (10)

1. an electric vehicle motor controller, comprise core circuit, PWM drive circuit, permagnetic synchronous motor PMSM, main circuit, testing circuit, protective circuit, E-Gas given circuit, electronics gear given circuit, telecommunication circuit and LCD MODULE, it is characterized in that: in described core circuit, be provided with dsp chip; High speed photo coupling device is provided with in described PWM drive circuit;

Described main circuit comprises DC power supply and Intelligent Power Module; Described DC power supply is connected with Intelligent Power Module;

Described testing circuit comprises current detection circuit, voltage detecting circuit and velocity checking circuits PG; Described current detection circuit is connected with intelligent function module, permagnetic synchronous motor PMSM, core circuit, system protection circuit respectively; Described voltage detecting circuit is connected with direct current component, core circuit respectively;

Described protective circuit comprises overcurrent protection circuit and system protection circuit; Described overcurrent protection circuit is connected with DC power supply, voltage detecting circuit, system protection circuit respectively; Described system protection circuit is also connected with core circuit;

Described PWM drive circuit is connected with core circuit, Intelligent Power Module respectively; Described E-Gas given circuit is connected with core circuit; Described core circuit is also connected with electronic gear given circuit; Described LCD MODULE is connected with core circuit; Described telecommunication circuit is connected with core circuit; Described telecommunication circuit is also connected with outside host computer.

2. a kind of electric vehicle motor controller according to claim 1, is characterized in that, the model of described dsp chip is TMS320LF2407A; Described dsp chip is 16 fixed-point number signal processing chips.

3. a kind of electric vehicle motor controller according to claim 1, it is characterized in that: in described current detection circuit, be provided with LEM Hall current sensor device, its model is LT58-S7, operating voltage is ± 15V, the specified effective value electric current in former limit is 50A, and the specified effective value electric current of secondary is 50mA.

4. a kind of electric vehicle motor controller according to claim 1, is characterized in that: be provided with Hall voltage transducer in described voltage detecting circuit, its model is LV28-P.

5. a kind of electric vehicle motor controller according to claim 1, is characterized in that: be provided with photoelectric encoder in described velocity checking circuits PG; Described photoelectric encoder is incremental optical-electricity encoder; Described photoelectric encoder is connected with dsp chip.

6. a kind of electric vehicle motor controller according to claim 1, is characterized in that: described overcurrent protection circuit comprises overvoltage crowbar for carrying out voltage protection, for carrying out the current foldback circuit of current protection and the power-on protective circuit for the protection of DC bus-bar voltage.

7. a kind of electric vehicle motor controller according to claim 1, is characterized in that: the model of described LCD MODULE is TM12232.

8. a kind of electric vehicle motor controller according to claim 1, is characterized in that: described DC power supply is 500V direct-flow storage battery.

9. a kind of electric vehicle motor controller according to claim 1, is characterized in that: the model of described Intelligent Power Module is PM75CLA060.

10. a kind of electric vehicle motor controller according to claim 1, is characterized in that: the model of described high speed photo coupling device is HCPL4504.