Title :
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
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;
Conference_Titel :
Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0635-X
DOI :
10.1109/IAS.1992.244447
