一種新型軟開關PFC電路的分析與仿真

摘要：本文引入了一種新型的軟開關PFC電路，首先分析了開關電源的發展歷程，然后講了諧波給公共電網造成的危害，再給出了這種軟開關PFC的電路拓撲及原理圖并對其工作原理進行了分析，最后對其參數進行設置在MATLAB軟件進行了仿真，并得到了良好的電壓電流波形，而且減小了電路的損耗，提高了電路的效率，實現了小型化，綠色化的要求。 敘詞：開關電源 軟開關 PFC MATLAB 小型化 綠色化 Abstract： This text introduce a sort of new pattern soft switch PFC circuit .First, analyze the　 develop course　of the on-off power supply. Second, relate the harm of humorous wave to the commonality electricity　 net. Third, present the topology and the principium　chart of the soft switch PFC and analyze it .At last ,set the parameter　and　simulates the converter of　with　matlab　simulation. more over ,get the hold of　well voltage and current wave , minish　the　spoilage　of the circuit, enhance the efficience of the circuit, meet the demand of the miniaturization and viridity. Keyword：on-off power supply soft switch PFC MATLAB miniaturization viridity