电动车用开关磁阻电机驱动系统

2016,43(2)新能源汽车技术?EMCA ???????????????????????????????????????????????????????????????????????????????????????????????

作者简介:李明辉(1975 ),男,本科,工程师,研究方向为机电系统控制三

徐少辉(1994 ),男,硕士研究生,研究方向为电机及其控制三

电动车用开关磁阻电机驱动系统

李明辉1,徐少辉2

(1.中国人民解放军空军西安航空四站装备修理厂,陕西西安710077;

2.中国矿业大学信息与电气工程学院,江苏徐州221116)

摘要:开关磁阻电机具有结构简单二转速范围宽二可靠性强二可控参数多等特点,适合作为电动车的驱动电机三首先介绍了电动车开关磁阻电机驱动系统组成,设计了以dsPIC30F6010A为主控制器和EPM570T100C5N为辅助控制器的车用控制器三设计了逻辑输入和逻辑输出电路,实现输入信号和输出信号的逻辑综合,简化控制系统设计三根据电机不同转速区域,设计了不同的控制策略,提高了电机调速范围和平滑度:在低速区域内,基于转速电流双闭环控制策略,采用电流斩波控制,限制绕组电流,减小转矩脉动,保证电机转速的稳定性能和跟随性能;高速区域采用电流斩波和开通角二关断角角度控制交错控制的方式,调整绕组导通位置,实现电机宽范围调速的目的三最后,在搭建的试验平台上验证了控制策略的可行性,对转速二电流波形进行了对比和分析,测试了车用开关磁阻电机驱动系统的调速性能三

关键词:开关磁阻电机;电动车;驱动系统;控制策略

中图分类号:TM351 文献标志码:A 文章编号:1673-6540(2016)02-0049-06

An Electric Vehicle Drive System Based on Switched Reluctance Motor

LI Minghui1, Xu Shaohui2

(1.Xi an Sizhan Equipment Repair Factory of Chinese People s Liberation Army Air Force,

Xi an710077,China;2.School of Information and Electrical Engineering,China University of

Mining and Technology,Xuzhou221116,China)

Abstract:Switched Reluctance Motor(SRM)is suitable for electric vehicle(EV) s drive motor due to the merits of simple structure wide speed operation range,high reliability,variable control parameters,etc.Introduced a SRM drive system framework for EV firstly,and a controller based on dsPIC30F6010A and EPM570T100C5N was proposed.Input and output logic process circuits were designed which simplified the control system.Different algorithms were applied for different speed range in order to improve speed adjustable range and smoothness.At low speed stage,the control strategy based on speed and current double closed loop with current chopping control(CCC) was introduced to limit phase currents and torque ripple,which aimed to ensure the speed stability and tracing performance.At high speed stage,CCC and APC(angle position control)were applied in turn.By adjusting conducting angle,wide speed operation range was acquired.At last,experiments were carried out on the prototype to verify the proposed control algorithm s feasibility.By comparing and analyzing the current waveforms,speed adjustment performance of the SRM drive system for EV was tested.

Key words:switched reluctance motor;electric vehicle;control strategy

0 引言

驱动电机的高性能二高效率是衡量电动车产

业化高度的重要标准三开关磁阻电机(Switched

Reluctance Motor,SRM)结构简单,成本低廉,能

够保证频繁起动和四象限运行[1-2],具有很强的再

生制动能力,调速范围宽,起动转矩大,容错能力

和缺相运行能力强,在很宽的速度和转矩范围内