Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

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) ;
  • 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)
  • Published : 2006.04.20
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents two new circuit topologies of DC bus lineside active edge resonant snubber assisted soft-switching PWM full-bridge DC-DC converter acceptable for either utility AC 200V-rms or AC 400V-rms input voltage source. All the active power switches in the full-bridge arms and DC busline can achieve ZCS turn-on and ZVS turn-off commutations and the total turn-off switching power losses of all active switches can be reduced for high-frequency switching action. The effectiveness of these new DC-DC converters topologies is proved for low voltage and large current high efficiency DC-DC power supplies as TIG arc welding machine from a practical point of view.

Keywords