Bridgeless Modified SEPIC Rectifier with Extended Gain for Universal Input Voltage Applications
Author(s):
Ansu Alex , Amal Jyothu College of Engineering,Kottayam,Kerala; Anish Benny, Amal Jyothi College of Engineering,Kottayam,Kerala
Keywords:
Bridgeless rectifier, discontinuous current mode (DCM), power factor correction, SEPIC rectifier, total harmonics distortion (THD)
Abstract:
A new single-phase ac–dc PFC bridgeless rectifier with multiplier stage to improve the efficiency at low input voltage and reduce the switch-voltage stress is introduced. The absence of an input rectifier bridge in the proposed rectifier and the presence of only two semiconductor switches in the current flowing path during each switching cycle result in less conduction losses and improved thermal management compared to the conventional full bridge topology. Lower switch voltage stress allows utilizing a MOSFET with lower RDS-on. The proposed topology is designed to operate in discontinuous conduction mode (DCM) to achieve almost a unity power factor and low total harmonic distortion (THD) of the input current. The DCM operation gives additional advantages such as zero-current turn-on in the power switches and simple control circuitry.
Other Details:
| Manuscript Id | : | IJSTEV2I12156
|
| Published in | : | Volume : 2, Issue : 12
|
| Publication Date | : | 01/07/2016
|
| Page(s) | : | 379-386
|
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