Single Phase Of The Research, Design And Simulation Of Power Pfc Circuit

This thesis first introduces the principle of active power factor correction, and analyses the Boost converter抯 deficiency. The power stage topologies and application of soft-switching techniques in APFC are discussed in detail. The principle of operation, the theoretical analysis, design procedure. and experimental results from a laboratory prototype rated at 1.5Kw with 400VDC output voltage are presented. At last, application of Discrete-Time methods and symbolic analysis methods in PFC circuits are discussed.