电动汽车复合电源控制策略及其实验研究

对电动汽车复合电源系统原理及其拓扑结构进行了分析和介绍;并依据实验室现有的电动汽车基本的性能指标对复合电源进行参数的匹配,制定了复合电源约束条件;在此基础上,设计了复合电源系统的基于逻辑门限值的控制策略。在Matlab/Simulink环境下对逻辑门限值控制策略进行仿真;并与单动力电池供能仿真做对比。仿真结果表明,在基于逻辑门限值控制策略下的复合电源系统中,超级电容的"削峰填谷"作用得到了有效发挥;且有效地减少了大电流充放电对动力电池的损害。最后在搭建的复合电源电动车试验平台对复合电源的控制策略进行了验证,验证了控制策略的可行性。

Study On Ev Hybrid Energy Storage System Control Strategy And Its Testing

In this paper, battery/super-capacitor hybrid energy storage systems are addressed, including a topology structure and working principle with respect of the hybrid energy storage systems. Based on the experimental platform, the parameter and constraint condition are determined. A primary hard-ware configuration of the hybrid energy storage systems is completed, and a logic threshold control strategy is proposed. By using the MATLAB/Simulink software, this control strategy is verified through simulation. Compared with single battery system, the super capacitor has a prominent impact on smoothing performance of the battery within hybrid energy storage systems. Besides, the super-capacitor has a function to reduce the damage to the battery experienced the large charging and discharging process. Finally, this control strategy has been verified by the experimental platform. The results indicate that control strategy is effective.