Bidirectional DC-DC converter is widely used in photovoltaic power generation system .In or-der to improve the performance of the converter , a bidirectional DC-DC converter parameter design method is proposed.The working principle of the bidirectional DC-DC converter is analyzed in detail , the inductance and capacitance parameters of the bidirectional DC-DC converter are optimized according to the requirements for continuity of inductor current and load ripple ratio in boost mode and inductor current ripple rate require -ments in Buck mode .Finally the simulation of the design results in the PSIM software environment .The simu-lation results show that the method proposed in this paper is feasible and effective .%双向DC-DC变换器被广泛应用于光伏发电系统,为了提高变换器的性能,提出一种双向DC-DC变换器参数设计方法.分析了双向DC-DC变换器的工作原理,根据工作在升压模式时电感电流连续及负载电压纹波率的要求,同时兼顾工作在降压模式时电感电流纹波率要求,对变换器电感和电容参数进行了优化设计,最后在PSIM软件环境下对设计方法进行了仿真验证.结果表明,所提出的双向DC-DC变换器参数设计方法可行、有效.
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