The ZVS-PWM commutation cell applied to the DC-AC converter

Author

de Seixas, Falcondes Jose Mendes ; Martins, Denizar Cruz

Author_Institution

Univ. of Sao Paulo State, Brazil

Volume

12

Issue

4

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

726

Lastpage

733

Abstract

This paper presents the analysis of a DC-AC power converter using a zero-voltage-switching (ZVS) commutation cell. First, the authors show the cell applied to the buck power converter. The stages of operation are presented along with the main current and voltage equations. Next, they adapt the power converter to the regenerative-operation mode. Hence, the full-bridge power converter at low-frequency operation is connected in the DC-DC output stage (at high frequency). The main switches commute at zero voltage. The power converter operated at constant frequency with pulse-width modulation (PWM), and neither overvoltage nor additional current stress was observed by digital simulation. A design example and experimental results obtained by prototype, rated at 275 V and 1 kW, are also presented

Keywords

DC-AC power convertors; PWM invertors; bridge circuits; circuit analysis computing; circuit testing; commutation; switching circuits; 1 kW; 275 V; DC-AC power converter; ZVS-PWM commutation cell; buck power converter; computer simulation; design example; experimental results; full-bridge power converter; regenerative-operation mode; zero-voltage-switching; DC-DC power converters; Digital modulation; Digital-to-frequency converters; Equations; Frequency conversion; Frequency modulation; Pulse width modulation; Pulse width modulation converters; Switches; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.602568

Filename

602568