한국조명전기설비학회:학술대회논문집 (Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference)
- 한국조명전기설비학회 2006년도 춘계학술대회 논문집
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- Pages.399-402
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- 2006
A New High Frequency Linked Soft-Switching PWM DC-DC Converter with High and Low Side DC Rail Active Edge Resonant Snubbers for High Performance Arc Welder
- Kang, Ju-Sung (The Graduate School of Electrical and Electronics Engineering Kyungnam University) ;
- Fathy, Khairy (The Graduate School of Electrical and Electronics Engineering Kyungnam University) ;
- Saha, Bishwajit (The Graduate School of Electrical and Electronics Engineering Kyungnam University) ;
- Hong, Doo-Sung (The Graduate School of Electrical and Electronics Engineering Kyungnam University) ;
-
Suh, Ki-Young
(The Graduate School of Electrical and Electronics Engineering Kyungnam University)
;
-
Lee, Hyun-Woo
(The Graduate School of Electrical and Electronics Engineering Kyungnam University)
;
- Nakaoka, Mutsuo (The Graduate School of Electrical and Electronics Engineering Kyungnam University)
- 발행 : 2006.05.11
초록
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 fer 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.
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