Title :
Analysis and optimisation of a flyback converter with a nondissipative snubber
Author :
Petkov, R. ; Hobson, L.
Author_Institution :
Univ. of Teesside, UK
Abstract :
The demand of smaller and more efficient DC-DC power converters has led to an increase of their operating frequency. Resonant topologies commonly used for the frequency range above a hundred kilohertz suffer from several disadvantages which include high voltage and current stress on semiconductor devices, large AC energy flow with associated power loss and necessity to vary the operating frequency to control the output voltage. The aim of this work is to perform an accurate analysis of a flyback power converter-nondissipative snubber system and an optimisation based on the overall losses
Keywords :
DC-DC power convertors; PWM power convertors; bipolar transistor circuits; circuit optimisation; insulated gate bipolar transistors; losses; network analysis; power bipolar transistors; snubbers; switching circuits; AC energy flow; DC-DC power converters; IGBT; PWM; current stress; flyback power converter; nondissipative snubber; operating frequency; optimisation; output voltage; power loss; resonant topologies; soft switching; voltage stress;
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
DOI :
10.1049/cp:19941016
