DocumentCode :
2715696
Title :
A New Soft-Switching PWM Half-Bridge DC-DC Converter with High and Low Side DC Rail Active Edge Resonant Snubbers
Author :
Fathy, K. ; Morimoto, Kenichi ; Doi, Toshiya ; Kang Hoon Koh ; Hyun Woo Lee ; Nakaoka, Mutsuo
Author_Institution :
Kyungnam Univ., Masan
fYear :
2006
fDate :
18-22 June 2006
Firstpage :
1
Lastpage :
7
Abstract :
This paper presents a new circuit topology of dc bus line switch-assisted half-bridge soft switching PWM inverter type dc-dc converter for arc welder. The proposed power converter is composed of typical voltage source half-bridge high frequency PWM inverter with a high frequency transformer link in addition to dc bus line side power semiconductor switching devices for PWM control scheme and capacitive lossless snubbers. All the active power switches in the half-bridge arm and dc bus lines can achieve ZCS turn-on and ZVS turn-off commutation operation and consequently the total turn-off switching losses can be significantly reduced. As a result, a high switching frequency of using IGBTs can be actually selected more than about 20 kHz. The effectiveness of this new converter topology is proved for low voltage and large current dc-dc power supplies such as arc welder from a practical point of view
Keywords :
DC-DC power convertors; PWM power convertors; arc welding; bridge circuits; commutation; high-frequency transformers; insulated gate bipolar transistors; power semiconductor switches; snubbers; switching convertors; zero current switching; zero voltage switching; DC rail active edge resonant snubbers; IGBT; ZCS turn-on; ZVS turn-off commutation; active power switches; arc welder; capacitive lossless snubbers; circuit topology; dc bus line; dc-dc power supplies; half-bridge arm; high frequency transformer link; soft-switching PWM half-bridge DC-DC converter; switching frequency; turn-off switching losses; voltage source half-bridge high frequency PWM inverter; DC-DC power converters; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rails; Resonance; Snubbers; Switching circuits; Switching converters; Arc welding equipments; DC-DC power converter; High frequency link; High side and low side active edge resonant snubbers; Low voltage and large current loads; PWM control Scheme; Zero Voltage soft switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
ISSN :
0275-9306
Print_ISBN :
0-7803-9716-9
Type :
conf
DOI :
10.1109/PESC.2006.1712128
Filename :
1712128
Link To Document :
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