CN201231692Y

CN201231692Y - Electric automobile driving control system

Info

Publication number: CN201231692Y
Application number: CNU2007200763450U
Authority: CN
Inventors: 姚鹏; 吴艳红; 刘秀芹
Original assignee: Shanghai Electrical Apparatus Research Institute Group Co Ltd; Shanghai Dianke Motor Technology Co Ltd
Current assignee: Shanghai Electrical Apparatus Research Institute Group Co Ltd; Shanghai Motor System Energy Saving Engineering Technology Research Center Co Ltd; Shanghai Dianke Motor Technology Co Ltd
Priority date: 2007-11-01
Filing date: 2007-11-01
Publication date: 2009-05-06
Anticipated expiration: 2017-11-01

Abstract

The utility model relates to a driving control system of an electric vehicle, comprising a permanent magnet synchronous motor (PMSM), a DSP control module, an inverted-fed driving module, a regulated power supply, a bus voltage sampling module and a two-phrase current sampling module; an inverter also comprises a battery group for supplying power, and has the functions of filter inversion, current and voltage feedback and over current protection; the inverter adopts an intelligent power module IPM; the output of the IPM drives the PMSM. The trigger signal of the IMP sent by the DSP controller and supplied through the driving module; the strong current and the weak current are separated through a sensor or a photoelectric coupler; the primary side and the driving side of the photoelectric coupler adopt independent power supplies; a LTA200-S from the LEM company is selected as the current sensor; a LV28-P is selected as the voltage sensor; in the main loop structure, R1 is a charging current-limiting resistor; C2 is a non-inductance capacitor; F is a fuse; an absorbing circuit is composed of C3-C5, R2-R4 and D1-D3. The motor driving system can be communicated with the power assembly system through CAN bus.

Description

A kind of Control of Drive for EV system

Technical field

This novel Control of Drive for EV system that relates to a kind of based on digital signal processor (DSP) realization is applicable in Control of Drive for EV system and other permagnetic synchronous motor (PMSM) Frequency Drive Control system, belongs to the electric machines control technology field.

Background technology

Electronlmobil is energy-conservation with it, of low pollution becomes the direction that various countries develop unexpectedly mutually.The price of electronlmobil is than internal-combustion engines vehicle height, and at initial stage of development, the having high input of electronlmobil, expense expenditure are many, but the maintenance expense of electronlmobil is low, along with the prolongation of tenure of use, its operating costs can reduce gradually, even can be lower than the internal-combustion engines vehicle use cost.The vehicle towed motor and the control system thereof of high density, high efficiency, wide range speed control, the heart that is electronlmobil are again one of gordian techniquies of electronlmobil development, are the basic assurances that improves driveability, travelled distance and the reliability of electronlmobil.

Permasyn morot is little with its volume, and light weight, efficient height, speed adjustable range are wide etc., and advantage especially is suitable for rotation systems such as electronlmobil and battery-driven car group, becomes the focus of present research and application.

Advanced in the world at present drive system of electric automobile, vector controlled and the Direct Torque Control of adopting more, plurality of advantages based on the DTC mode has determined to have very practical value in the Control of Drive for EV system, it is the another approach that comprehensively improves the electronlmobil performance that DTC (Direct Torque Control) is applied in used for electric vehicle PMSM (permasyn morot) system.

DTC (Direct Torque Control) research of PMSM (permasyn morot) relatively lags behind always.In recent years, system realization, weak magnetic, the magnetic linkage of the scholar of states such as Britain, Italy, Finland, the U.S., Japan, Australia, Canada under the DTC of PMSM mode selected, no sensor is controlled, reduce aspects such as torque pulsation, stator resistance identification has carried out Primary Study.Generally speaking, the research of this direction is few.Domestic in the research aspect this seldom, have only a few family units such as Nanjing space flight university, Zhejiang University, University Of Tianjin just to begin the research of being correlated with at present.

Summary of the invention

Order of the present utility model is to provide a kind of Control of Drive for EV system, under the requirement of satisfying drive system of electric automobile, DTC (Direct Torque Control) technology of PMSM (permasyn morot) is applied in the Control of Drive for EV system, and the system that utilizes DSP (digital signal processor) to realize.

For achieving the above object, the technical solution of the utility model is that control system comprises PMSM DSP control module, inversion driver module, constant voltage power suspply, bus voltage sampling module, biphase current sampling module; Wherein the inverter driver module also comprise battery-powered, filtering inversion, electric current and voltage feedback, overcurrent protection.Inverter adopts Intelligent Power Module IPM (or other power model such as IGBT, be that example describes with IPM at this), and its output drives PMSM (permasyn morot).The energizing signal of IPM is provided by dsp controller, provides through overdriving again.Pass through sensor or photoelectric coupler isolation between forceful electric power and the light current, and independently power supply is adopted with the driving limit in the former limit of photoelectrical coupler.Current sensor can be selected the LTA 200-S of LEM company for use, and voltage sensor is selected LV28-P for use.Can realize motor driven systems and power assembly system communication by the CAN bus simultaneously.The structure of controller major loop, R1 is a charging current limiter resistance.When major loop powered on, power supply will be given filter capacitor C1 charging earlier, if there is not current-limiting resistance, charging current can be very big, may damage filter capacitor.Therefore, need between storage battery and filter capacitor, seal in a current-limiting resistance.C2 is noninductive electric capacity, filters radio-frequency interference.F is a fuse, and inverter is in time disconnected when being short-circuited with overcurrent, reduces the loss.The absorption circuit that C3～C5, R2～R4, D1～D3 form.

The beneficial effects of the utility model: the utility model adopts the DTC control of PMSM, makes system's simple possible, relies on little to the parameter of electric machine, has the good dynamic and static characteristic, and the zero voltage vector is applied in the system, make system have good energy-saving effect, and reduced torque pulsation.

Below in conjunction with drawings and Examples the utility model is made comparisons and to explain.

Description of drawings

Fig. 1 is that Control of Drive for EV of the present utility model system constitutes block diagram;

Fig. 2 is the major loop structure figure of Control of Drive for EV device of the present utility model;

Fig. 3 is electronlmobil IPM isolation drive figure of the present utility model;

Fig. 4 is a speed interface circuit diagram of the present utility model;

Fig. 5 is a current interface circuit diagram of the present utility model;

Fig. 6 is a voltage interface circuit diagram of the present utility model;

Fig. 7 is guard signal interface circuit figure of the present utility model;

Fig. 8 originally uses later-model Control Software block diagram.

The specific embodiment

With reference to Fig. 1, this is that Control of Drive for EV of the present utility model system constitutes block diagram.

As shown in the figure, driving control system comprises PMSM (permasyn morot), DSP (digital signal processor) control module, inversion driver module, constant voltage power suspply, bus voltage sampling module, biphase current sampling module; Wherein the inverter driver module also comprise battery-powered, filtering inversion, electric current and voltage feedback, overcurrent protection.Inverter adopts Intelligent Power Module IPM other power models such as (or) IGBT, and its output drives PMSM.The energizing signal of IPM is provided by dsp controller, provides through overdriving again.Pass through sensor or photoelectric coupler isolation between forceful electric power and the light current, and independently power supply is adopted with the driving limit in the former limit of photoelectrical coupler.Current sensor is selected the LTA200-S of LEM company for use, and voltage sensor is selected LV28-P for use.Can realize motor driven systems and power assembly system communication by the CAN bus simultaneously.

With reference to Fig. 2, this is the major loop structure figure of Control of Drive for EV device of the present utility model.

As shown in the figure, R1 is a charging current limiter resistance, and when major loop powered on, power supply will be given filter capacitor C1 charging earlier, if there is not current-limiting resistance, charging current can be very big, may damage filter capacitor.Therefore, need between storage battery and filter capacitor, seal in a current-limiting resistance.C2 is noninductive electric capacity, filters radio-frequency interference.F is a fuse, and inverter is in time disconnected when being short-circuited with overcurrent, reduces the loss.The absorption circuit that C3～C5, R2～R4, D1～D3 form.

With reference to Fig. 3, this is Drive for EV IPM isolation drive figure of the present utility model.

As shown in the figure, the driving buffer circuit of IPM, although added Dead Time in the PWM of LF2407A output, GEL device 22V10D guarantees the interlocking of the upper and lower brachium pontis of same phase after LF2407A.In order to strengthen the carrying load ability of drive signal, after the output of 22V10D, seal in a slice energy disperser---MC1413.When drive signal makes a mistake, LF2407A sends a spurious signal False, and lights LED INTPEND.The output of energy disperser MC1413 is isolated through rapid light coupling HCPL4503, drives IPM.Only provided the circuit that A goes up brachium pontis mutually among the figure, the circuit of other brachium pontis is identical therewith.

With reference to Fig. 4, Fig. 5, Fig. 6, this is speed interface of the present utility model, current interface, voltage interface circuit diagram.

As shown in the figure, for realizing the observation of stator magnetic linkage and torque, detect power source voltage, electric current.For PMSMDTC, the accurate position that need know rotor magnetic pole for actuating motor is to determine the stator magnetic linkage initialization vector, also need to calculate rotating speed of motor simultaneously and realize speed closed loop control with the photoelectricity code signal, improve electric powered motor, be provided with the treatment circuit of incoming signals such as voltage, electric current, photoelectric coding for this reason.

With reference to Fig. 7, this is the guard signal interface circuit figure of Drive for EV of the present utility model.

As shown in the figure; the guard signal circuit comprises IPM fault (overheated, overcurrent, short circuit, control line under-voltage); any protective circuit action in four kinds, IGBT gate driver circuit all can cut-off currents and are exported a breakdown signal FO), radiating gill is overheated, motor stator winding is overheated, the bus overcurrent.Wherein IPM fault and bus overcurrent require controller to move immediately, turn-off IPM, and motor stator winding are overheated, the overheated real-time that does not require action of radiating gill, can take to report to the police to power assembly system earlier, wait pending scheme then.

With reference to Fig. 8, this is the Control Software block diagram of Drive for EV of the present utility model.

The utility model provides software block diagram, and is only for referencial use.

Claims

1 one kinds of Control of Drive for EV systems, be used for Control of Drive for EV, it is characterized in that: control system comprises permasyn morot, DSP CONTROL module, photoelectric isolation module, inversion driver module, constant voltage power suspply, bus voltage sampling module, biphase current sampling module, major loop structure circuit; Wherein the inverter driver module also comprise battery-powered, filtering inversion, electric current and voltage feedback, overcurrent protection;

Bus voltage sampling module, biphase current sampling module pass to signal digital signal processor (DSP) respectively, arrive the inversion driver module through photoelectric isolation module, inverter adopts Intelligent Power Module IPM or IGBT power model, removes to drive permasyn morot; The energizing signal of IPM is provided by dsp controller, provides through overdriving again; Pass through sensor or photoelectric coupler isolation between forceful electric power and the light current, and independently power supply is adopted with the driving limit in the former limit of photoelectrical coupler.

2 Control of Drive for EV as claimed in claim 1 systems, it is characterized in that: described major loop structure circuit comprises resistance R 1, capacitor C 2, fuse F; R1 is a charging current limiter resistance, and when major loop powered on, power supply will be given filter capacitor C1 charging earlier, if there is not current-limiting resistance, charging current can be very big, may damage filter capacitor; C2 is noninductive electric capacity, filters radio-frequency interference; F is a fuse, and inverter is in time disconnected when being short-circuited with overcurrent, reduces the loss.

3 Control of Drive for EV as claimed in claim 1 systems, it is characterized in that: described photoelectric isolation module comprises that GEL device 22V10D is at LF2407A, energy disperser MC1413, LED INTPEND, rapid light coupling HCPL4503; After the output of 22V10D, seal in a slice energy disperser---MC1413, and light LED INTPEND, energy disperser MC1413, rapid light coupling HCPL4503, the output of isolation is isolated through rapid light coupling HCPL4503, drives IPM.