DC and AC characteristics of zero voltage switching PWM converters

Author

Moussa, Wisam M. ; Morris, James E.

Author_Institution

IBM Corp., Endicott, NY, USA

fYear

1992

fDate

29 Jun-3 Jul 1992

Firstpage

236

Abstract

The authors present an equivalent circuit model for zero voltage switching resonant transition (ZVS-RT) converters operating with constant frequency which takes into account the RT interval. The analysis is carried out by relating the terminal currents and voltages, through the definition of switching functions of the power switches responsible for the ZVS action an equivalent DC circuit model is generated from these relationships. This model is simple and accurate, and can be used to analyze the DC characteristics of the three basic topologies using ZVS-RT: buck, boost, and buck-boost. This technique can be extended to improve the small-signal analysis of these converters, and it can be applied to converters using bipolar junction transistors as switching devices to account for the impact of the switching times of the devices

Keywords

bipolar transistors; equivalent circuits; network analysis; power convertors; power transistors; pulse width modulation; switching circuits; PWM; ZVS; bipolar junction transistors; boost; buck; buck-boost; equivalent circuit model; power convertors; power transistors; resonant transition; small-signal analysis; switching functions; zero voltage switching; Circuit topology; DC generators; Equivalent circuits; Frequency conversion; Power generation; Pulse width modulation converters; Resonance; Switching circuits; Switching converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE

Conference_Location

Toledo

Print_ISBN

0-7803-0695-3

Type

conf

DOI

10.1109/PESC.1992.254667

Filename

254667