基于耦合电感的新型Boost软开关的研究

A Novel Boost Soft-switching Based on Coupled Inductor

针对传统Boost软开关变换器开关损耗大和轻载条件下效率低的缺点,提出一种新型Boost软开关拓扑结构,通过在传统Boost软开关的拓扑结构中增加一个小电感、一个二极管和与主电感反向耦合的电感,实现了主开关在零电流开关(ZCS)下的导通和关断,减小开关损耗,从而提高变换器的效率。对新拓扑结构的工作过程作了详细分析,并通过实验对分析过程进行了验证。

A novel Boost soft-switching topology is proposed which aiming at the traditional Boost soft-switching converter switching losses and low efficiency under light load.A small inductor,a diode and a main inductor reverse coupled inductors are added in traditional Boost soft-switching topology in order to main switch conduction and shutdown in the zero current switching（ZCS）.At the same time ,switch loss is reduced and the converter efficiency is improved. The working process of the new topological structure is analyzed and proved by experiment.