雙向開關前置的單相升壓APFC變換器建模與仿真

摘要：引入一種雙向開關前置的單相升壓APFC變換器拓撲，把雙向開關放置在整流橋前端，較好的解決了傳統單相升壓APFC變換器電路置后的升壓電感直流偏磁問題。本文介紹該電路的結構，分析研究電路的各種工作狀態，對該拓撲進行了小信號建模，最后利用Matlab軟件對該變換器電路進行了仿真分析。 敘詞：雙向開關；功率因數校正；Matlab仿真 Abstract：A prepositional bidirectional Switch,single-phase ,boost, active-power-factor-correction converter topology is introduced in this paperThe bidirectional switch is placed before the rectifierThis paper analyses and investigates the topologys structure and various work station, establishes the small signal modeling of the topology and also simulates the converter withMatlab software. Keyword：bidirectional witch; power factor correction; Matlab simulation