The Boost Convertor is chosen as the main circuit of the APFC system, and its small-single model is built. This lays the foundation of the analysis of the APFC system on the aid of computer.

• 本文选用Boost型变换器作为APFC的主电路,并建立了其小信号模型,为系统的计算机辅助分析打下基础。