全桥双向DC/DC变换器移相控制策略的改进

摘要

在全桥双向DC/DC变换器(BDC)的传统移相控制策略中,存在循环能量的问题.针对此问题,提出了一种新型移相控制策略,该控制策略完全消除了循环能量.给出了新型控制策略的具体开关过程,并将此控制策略与传统控制策略及其他改进控制策略在电流纹波、效率等方面进行了细致的比较.最后对该新型移相控制策略进行了实验验证.%In the traditional phase-shift control strategy for full bridge bidirectional DC/DC converter,the circulating energy problem exists.This paper proposes a new phase-shift control strategy, which eliminates the circulating energy totally.The new control strategy is compared with the traditional one in current ripple and efficiency.For new control strategy, experimental results from a prototype are presented.