摘要
为了提高双电源电动汽车动力系统效率,对电池、超级电容和电机等子模块进行了建模和工作过程的效率分析,以揭示在蓄电池单驱、蓄电池和超级电容双驱和预充电3种驱动模式下电动汽车动力系统效率随车速和加速度而变化的规律。基于效率最优的原则,在Matlab/simulink环境下研究了电动汽车动力系统的控制策略,使电动汽车能够合理切换工作模式,使动力系统工作在效率最优的区域,延长电动汽车的续驶里程。
For enhancing the efficiency of dual power electric vehicles, the models for the sub-modules of battery, super capacitor and electric motor are set up, and the efficiency of system in working process is analyzed. The changing law of power system efficiency with the variations of vehicle speed and acceleration in three drive modes （ battery drive alone, dual power drive and pre-charging） is revealed. Based on the principle of optimum ef- ficiency, the control strategy for the power system of electric vehicle is studied under the environment of Matlab/ simulink to enable electric vehicle to reasonably switch its working modes and make power system operates in the re- gion of optimum efficiency and extends the driving range of electric vehicle.
出处
《汽车工程》
EI
CSCD
北大核心
2016年第4期422-428,共7页
Automotive Engineering
基金
国家自然科学基金(51105178)
江苏省自然科学基金(BK2011489)
国家863计划项目(2012AA111401)
国家新能源汽车产业技术创新工程
江苏省"六大人才高峰"项目(2013-XNY-002)资助
关键词
双电源
控制策略
效率最优
超级电容
dual electric power
control strategy
optimum efficiency
super capacitor
