摘要
该文以前轮永磁直流电机驱动的双能量源纯电动汽车为研究对象,以开发合理高效的纯电动汽车制动能量回收系统及设计相应的控制策略为目的,建立了蓄电池、超级电容、双向DC/DC变换器等部件的数学模型,并进行了双能量源系统主回路、恒流恒压双闭环PI控制器设计研究,建立了系统的仿真模型并进行仿真。仿真结果表明,PI控制器可有效实现恒流恒压充放电过程,恒流充电以限制充电电流,当蓄电池达到额定电压或超级电容SOC饱和后再进行恒压充电,实现了保护储能元件并完全充电的目的。
This article takes the dual energy source pure electric vehicle driven by a permanent magnet DC motor as the research object,with the aim of developing a reasonable and efficient braking energy recovery system for pure electric vehicles and designing corresponding control strategies.The mathematical models of components such as batteries,supercapacitors,and bidirectional DC/DC converters are established,and the main circuit of the dual energy source system and the constant current and constant voltage dual closed-loop PI controller are designed and studied,a simulation model of the system was established and simulated.The simulation results showed that the PI controller can effectively achieve constant current and constant voltage charging and discharging processes.Constant current charging is used to limit the charging current,and constant voltage charging is carried out when the battery reaches the rated voltage or the supercapacitor SOC saturation,achieving the goal of protecting the energy storage components and fully charging them.
作者
宋百玲
胡思远
SONG Bailing;HU Siyuan(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China)
出处
《自动化与仪表》
2024年第6期10-15,共6页
Automation & Instrumentation
关键词
电动汽车
双能量源
恒流恒压双闭环控制
制动能量回收
electric vehicles
dual energy source
constant current and constant voltage dual closed-loop control
brake energy recovery
