中文摘要：

设计了一种适用于大容量储能系统功率控制的三重化交错并联双向DC/DC 变换器.针对具有强非线性、滞后和参数存在漂移的DC/DC 变换器,采用平均状态空间法进行了数学建模及分析,提出了基于电流和电压的双闭环PID 控制方案,使用了幅相裕度法对PI参数进行整定,最后设计实验验证了所采用的控制策略.实验结果表明,变换器在较宽的工作范围内实现了零电压开关工作,消除了动态电流变化导致的过充和过放,在较大负载变化范围内实现了95 以上的效率.

英文摘要：

In this paper,a triple-channel interleaving bidirectional DC/DC converter for power control system?of large capacity storage is researched. As for strongly nonlinear,delay and parameter drift of the DC / DC converter,by using the average of the state space method,the mathematical model of DC / DC conversion circuit is analyzed. The dual closed-loop PID control scheme based on the current and voltage is proposed and the gain and phase margin using the method of tuning parameters for PI. Experiment results show that,the proposed method achieves zero-voltage switching (ZVS), eliminating the dynamic current variation due to overcharge and over -discharge that is also implemented to achieve higher 95%efficiency over a wide load range.