双向全桥LLC谐振变换器的理论分析与仿真

Theoretical Analysis and Simulation of the Bidirectional LLC Resonant DC/DC Converter

将LLC谐振网络引入到全桥双向DC-DC变换器中,提出一种新型双向全桥LLC谐振变换器。该变换器主要由传统全桥双向DC-DC电路和LLC谐振网络组成。该电路可以在全负载范围内实现功率开关管的零电压开通关断和整流环节的零电流开通关断。文中介绍和分析了变换器的拓扑结构与工作原理,并通过仿真验证了理论分析的正确性。

A new bidirectional DC-DC converter with LLC resonant net was proposed. The converter was composed of LLC resonant net and traditional bi-directional DC-DC circuit with zero voltage switching （ZVS） operation of the primary switches and zero current switching （ZCS） operation of the rectifier diodes. The topology configuration and principle of converter were analyzed and the results of simulation verified the theoretical results.