A New ZVT-PWM Converter with Reduced Circulating Current Losses

Author

Gao, Xing ; Moschopoulos, Gerry ; Bassan, Sondeep

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont.

fYear

2006

fDate

Sept. 2006

Firstpage

1

Lastpage

5

Abstract

A new auxiliary circuit for single switch, zero-voltage-transition pulse width modulated (ZVT-PWM) converters is proposed in this paper. This circuit can assist the zero-voltage-switching (ZVS) operation of the main converter switch with lower auxiliary switch switching losses than many previously proposed ZVT-PWM converters, but with less circulating current than that found in ZVT-PWM converters with resonant type auxiliary circuits. The paper will review the operation of auxiliary circuits in ZVT-PWM converters and then discuss the properties and characteristics of the new circuit. Experimental results obtained from a prototype of a ZVT-PWM boost converter with the new auxiliary circuit are presented

Keywords

DC-DC power convertors; PWM power convertors; losses; resonant power convertors; switching convertors; zero voltage switching; ZVS; ZVT-PWM; boost converter; resonant type auxiliary circuit; switching losses; zero-voltage-switching operation; zero-voltage-transition pulse width modulated converters; Pulse circuits; Pulse width modulation; Pulse width modulation converters; RLC circuits; Resonance; Switches; Switching circuits; Switching converters; Switching loss; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 2006. INTELEC '06. 28th Annual International

Conference_Location

Providence, RI

Print_ISBN

1-4244-0430-4

Electronic_ISBN

1-4244-0431-2

Type

conf

DOI

10.1109/INTLEC.2006.251646

Filename

4018148