Pi Controller Based Soft-Switching Two-Switch Resonant Ac–Dc Converter with High Power Factor

C. Sukumar, Chidhambaraiah Setty

Abstract


In this project a Soft-switching two-switch resonant power factor correction (PFC) converter is proposed with closed loop PI contoller. In this converter, a boost PFC circuit is combined with a soft-switching resonant converter and PI. Boost converter is used to achieve the power factor correction (PFC). The voltage across the main switches is improved to the dc-link voltage and the energy of the transformer leakage inductance is reused. Soft-switching operation of main switches and output diodes is getting in a resonant manner and output feed given to the pi controller the switching losses are significantly reduced. Therefore, the overall efficiency is improved. A simulation of the 48 V, 60W converter is presented.


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