串联负载谐振变换器的参数设计

Parameter Design of Series Load Resonant Converter

串联负载谐振变换器(Series load resonant converter,SLRC)是利用电感与电容产生谐振为开关器件提供零状态切换,它可以降低开关损耗、电磁干扰等,解决困扰开关变换器向高频化发展的问题。在其电路中,谐振电感和电容的参数对于变换器能否实现软开关起到了关键的作用。针对此关键参数设计问题,提出了对应的设计原则。为了验证所提出的谐振电路参数设计方案的正确性,搭建了仿真模型。仿真结果证明了方案的正确性和可行性,该设计思想对于串联谐振变换器的工程设计具有一定的指导意义。

SLRC （ Series load resonant converter） provides zero-state switching for switch device by utilizing the resonance from inductor and capacitor; which can reduce switching loss, electromagnetic interference etc. and solve the problems in the development from switch converter to high frequency. Whether the soft-switch can be realized, the parameters of resonant inductance and capacitance play a very important role in the circuit. Therefore, a corresponding design principle is proposed for the key problem of parameter design, and a simulation model is built up to inspect the parameter design scheme for resonant circuit. The simulation results verify the validity and feasibility of the scheme, and the design idea is instructive for the engineering design of series resonant converter.