PWM调制方案对无刷直流电机电动汽车再生ABS的影响  

Effect of the PWM modulation scheme on the regenerative anti-lock braking system of the electric vehicle driven by apermanent magnet brushless DC motor

作　　者：赵国柱[1,2,3] 韩英[1,2] 魏民祥[3] 李玉芳[3] 

机构地区：[1]南京农业大学工学院,南京210031 [2]南京农业大学江苏省智能化农业装备重点实验室,南京210031 [3]南京航空航天大学能源与动力工程学院,南京210016

出　　处：《重庆大学学报（自然科学版）》2014年第2期31-36,45,共7页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(51005113);江苏省农机局科研启动基金项目(Gxz10003)

摘　　要：为研究PWM调制方案对无刷直流电机电动汽车再生ABS的影响,在分析单、双管PWM调制方案下的无刷直流电机再生制动原理基础上,通过调节占空比的方法来防止再生制动时驱动轮抱死。建立了单轮车辆再生制动动力学模型,设计了再生ABS双闭环控制系统,外环控制滑移率,内环控制制动电流。以系统在结冰路面上再生制动为例,对系统在单、双管PWM调制方案下的防抱死制动性能进行了仿真试验。结果表明:与单管调制相比,双管调制时系统的制动距离短,回收能量多。To study the effect of the PWM modulation scheme on the regenerative anti-lock braking system （RABS）of the EV driven by a permanent magnet brushless DC motor,based on the analysis of the principle of the regenerative braking of the brushless DC motor under a single and double switching PWM modulation scheme,respectively,a method to adjust the PWM duty cycle is proposed to prevent drive wheels from locking during regenerative braking.A regenerative braking dynamics model of a single wheel vehicle is established,and a double-loop control model of the RABS is designed.The outer loop controls the wheel slip ratio,and the inner loop controls motor braking current.As an example of the EV’s braking on ice-covered road,a simulation test is conducted for the RABS under a single and double switching PWM modulation scheme respectively.The result shows that the RABS has a shorter braking distance and more energy recovery under a double switching PWM modulation than a single.

关 键 词：电动汽车 再生制动 制动防抱死系统(ABS) 无刷直流电机 PWM调制方案 

分 类 号：U469.72[机械工程—车辆工程]