Soft-switched PWM high-frequency with PFC converter using boost-flyback converter interleaved

This paper proposes as a power factor correction pre regulator converter an AC-DC interleaved boost-flyback using a nondissipative snubber and operating at 100 kHz per cell. That is composed by switches working in ZCS and ZVS way, controlled by PWM. By using interleaved converters, an overall reduction of the boost inductor can be obtained, reducing switching losses without increasing current and voltage stresses. This topology has the advantages of interleaved flyback that eliminates an auxiliary source and an inductor in this configuration. The complete operating principles, theoretical analysis, relevant equations and simulation results are given to show the feasibility of the proposed power factor correction converter. Experimental results are presented in this work, with a power tested with the prototype rated at 2000 Watts.