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A new ZCS quasi-resonant unity power factor rectifier with reduced conduction losses

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2 Author(s)
A. F. de Souza ; Dept. of Electr. Eng., Univ. Federal de Santa Catarina, Florianopolis, Brazil ; I. Barbi

This paper presents a novel single-phase unity power factor rectifier, which features current-sense frequency control and zero-current switching with no auxiliary switches. The reduced conduction losses are achieved by the employment of a single converter, instead of the typical configuration composed of a front end rectifier followed by a boost converter. Experimental results of a 250 W converter with 127 Vrms input voltage and 200 VDC output voltage are presented. Theoretical analysis, a design example, simulation results and the control circuitry are also presented in the paper. The zero-current-switching makes this topology very attractive to high power IGBT applications

Published in:

Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE  (Volume:2 )

Date of Conference:

18-22 Jun 1995