Title :
A novel two-quadrant soft-switching converter with one auxiliary switch for high power applications
Author :
Song, Byeong-Mun ; Lai, Jih-Sheng
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper describes a newly proposed two-quadrant soft-switching converter with only one auxiliary switch suitable for various high power applications. The proposed converter realizes soft-switching using a simple load side auxiliary resonant tank that consists of a switching device, a diode, and an inductor. With a novel fixed timing control scheme, the resonant current varies with the load current to achieve near zero-voltage turn-on and lossless snubber turn-off at all current conditions. There is no need for any sophisticated control algorithms and sensors. Computer simulation and hardware implementation were performed with a 15 kVA converter to validate the proposed converter. A comprehensive evaluation indicates that the soft switching gains significant benefits over the conventional hard-switching counterpart
Keywords :
insulated gate bipolar transistors; power bipolar transistors; power convertors; power semiconductor switches; snubbers; switching circuits; 15 kVA; auxiliary switch; computer simulation; current conditions; diode; fixed timing control scheme; hardware implementation; high power applications; inductor; load side auxiliary resonant tank; lossless snubber turn-off; switching devices; two-quadrant soft-switching converter; zero-voltage turn-on; Application software; Computer simulation; Diodes; Inductors; Inverters; Resonance; Snubbers; Switches; Switching converters; Voltage;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.806012
