低电量状况下的电动汽车驱动策略设计  

Design of Electrical Vehicle Control Strategy Based on Battery Remaining Power

作　　者：张彦会 张群[2] 张炯[3] 崔传真[2] 曹强荣[2] 

机构地区：[1]广西汽车零部件与整车技术重点实验室,广西柳州545006 [2]广西科技大学(筹)汽车与交通学院,广西柳州545006 [3]广西科技大学(筹)职业技术教育学院,广西柳州545006

出　　处：《河南科技大学学报（自然科学版）》2013年第6期36-40,5,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：广西自然科学基金项目(2011GXNSFA018033);广西教育厅科研基金项目(201102ZD026)

摘　　要：电动汽车动力电池在不同放电电流情况下,电池放电容量的特性会有所不同。尤其在电池剩余电量较少阶段,普通供电方式会使直流母线电压以较大幅度下降并减少电池剩余电量的可用时长。本文在剩余电量较少阶段以续行里程为控制目标,并根据电动机实际运行工况调整三相异步电机的驱动模式,通过专家PID调节器的控制方法来驱动电动汽车三相异步电机。试验结果表明:本文提出的控制方法,在电池剩余电量较少阶段提高了电池电量的利用率和电动机的工作效率,最终延长了电动汽车的续行里程。The performance of traction battery is variable under the condition of different discharge-current,and the power utilization is effected by large discharge-current. Especially under the stage of low charge,the voltage of direct-current bus drops at large extent and the available time of the battery is reduced on ordinary mode. In this paper,driving range was a control object at the stage of low battery charge. The drive mode of induction motor was adjusted first according to actual operating condition. Then a drive strategy of electrical vehicle induction motor combined with expert PID regulator was proposed. Experimental results indicate that the control strategy proposed in this paper improves the efficiency of power utilization as well as the working productivity at the stage of low remaining power and the driving range of electrical vehicle is extended.

关 键 词：电压空间矢量控制 电池电量 电机效率 续行里程 控制方法 

分 类 号：TM343.2[电气工程—电机]