Soft switching self-oscillating IGBT-based DC-DC converters

Author

Theron, P.C. ; Swanepoel, P.H. ; Schoeman, J.J. ; van Wyk, J.D. ; Ferreira, J.A.

Author_Institution

Energy Lab., Rand Afrikaans Univ., Johannesburg, South Africa

fYear

1992

fDate

4-9 Oct 1992

Firstpage

929

Abstract

The characteristics and advantages of soft switching self-oscillating insulated-gate bipolar transistor (IGBT)-based DC-DC converters are described. The main features offered by this family of self-oscillating inverters include: a full-bridge self-oscillating inverter having a minimum component count; extremely high efficiency, even at ultrasonic switching frequencies; low electromagnetic interference due to zero voltage switching; automatic protection against short-circuit output; automatic protection to all other switches during failure of one switch due to overheating; automatic protection against spurious simultaneous turn-on of two switches in the same inverter leg; negligible overrating of the switches for current and voltage; and negligible VA rating of the saturating transformer compared to the power transformer

Keywords

insulated gate bipolar transistors; invertors; power convertors; DC-DC converters; IGBT; VA rating; automatic protection; efficiency; electromagnetic interference; full-bridge self-oscillating inverter; saturating transformer; self-oscillating insulated-gate bipolar transistor; short-circuit output; soft switching; ultrasonic switching frequencies; zero voltage switching; DC-DC power converters; Insulated gate bipolar transistors; Insulation; Inverters; Power transformers; Protection; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0635-X

Type

conf

DOI

10.1109/IAS.1992.244447

Filename

244447