Soft-Switching Two-Switch Resonant AC–DC Converter With High Power Factor

Abstract

 Abstract-A soft-switching two-switch resonant power factor correction (PFC) converter is presented. In this converter, a boost PFC circuit is integrated with a soft-switching resonant converter. High power factor is achieved by the boost PFC circuit. The voltage across the main switches is confined to the dc-link voltage and the energy of the transformer leakage inductance is also recycled. Soft-switching operation of main switches and output diodes is achieved with a resonant manner and the switching losses are significantly reduced. Therefore, the overall efficiency is improved. The presented theoretical analysis is verified by a prototype of a 48V, 60W converter. where he is currently a Professor. His research interests include the modeling, design and control of power converters, soft-switching power converters, resonant converters, PFC circuits, and driving circuits for plasma display panels.

A New Active Snubber Cell for Soft Switched Power Factor Correction Boost Converters

“…These harmonic currents cause undesirable issues such as larger harmonic distortion, poor power factor at AC input voltage and current. For the purpose of PFC, the boost converters are usually benefited in industrial applications [5]- [7]. This is mainly because ease of control and high power density are desired attributes in AC-DC boost converters.…”

A single-stage bridgeless ZVS AC/DC converter for power-factor-correction applications

“…Nowadays, isolated AC/DC PFC converters are becoming necessary for many types of electronic equipment to meet harmonic regulations and standards [1,2,3,4,5,6]. Generally, isolated PFC converters are divided into two-stage type and single-stage type according to their topologies [1,2,7].…”

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Constrained control of uncertain nonhomogeneous Markovian jump systems

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