Dual utility AC voltage line operated soft switching PWM DC-DC power converter with high frequency transformer link for arc welding equipment

Keiki Morimoto, Toshimitsu Do, Haruhiko Manabe, Nabil A. Ahmed, Hyun Woo Lee, Mutsuo Nakaoka, Tarek Ahmed, Eiji Hiraki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper presents two new circuit topologies of dc busline series active snubber assisted soft switching PWM full-bridge dc-dc power converter acceptable for either utility ac 200V-rms or ac 400V-rms Input voltage source. Proposed power converters are composed of a typical voltage source full-bridge high frequency PWM Inverter using dc busline side series switching devices with the aid of a parallel capacitive lossless snubber. All the active power switches In the full-bridge arms and dc busline 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 for used IGBTs can be actually realized more than about 20 kHz. It Is proved that the more the switching frequency of full-bridge Inverter Increases, the more soft switching PWM dc-dc power converter with a high frequency transformer link has remarkable advantages for Its power conversion efficiency and power density as compared with the conventional hard switching PWM Inverter type dc-dc converter. The effectiveness of this new converter topology Is proved for low voltage and large current dc-dc power supplies as arc welding machine from a practical point of view.

Original languageEnglish
Title of host publicationICEMS 2005
Subtitle of host publicationProceedings of the Eighth International Conference on Electrical Machines Systems
Pages1084-1089
Number of pages6
Publication statusPublished - Dec 1 2005
Externally publishedYes
EventICEMS 2005: 8th International Conference on Electrical Machines and Systems - Nanjing, China
Duration: Sep 27 2005Sep 29 2005

Publication series

NameICEMS 2005: Proceedings of the Eighth International Conference on Electrical Machines and Systems
Volume2

Other

OtherICEMS 2005: 8th International Conference on Electrical Machines and Systems
CountryChina
CityNanjing
Period9/27/059/29/05

Keywords

  • Active switch assisted lossless capacitive snubber
  • Arc welding power supply in industry
  • Dc-dc power converter
  • High frequency transformer links
  • Soft switching PWM
  • Voltage source full-bridge topology

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Morimoto, K., Do, T., Manabe, H., Ahmed, N. A., Lee, H. W., Nakaoka, M., Ahmed, T., & Hiraki, E. (2005). Dual utility AC voltage line operated soft switching PWM DC-DC power converter with high frequency transformer link for arc welding equipment. In ICEMS 2005: Proceedings of the Eighth International Conference on Electrical Machines Systems (pp. 1084-1089). [1574947] (ICEMS 2005: Proceedings of the Eighth International Conference on Electrical Machines and Systems; Vol. 2).