Next generation high efficiency high power dc-dc converter incorporating active switch and snubbing capacitor assisted full-bridge soft-switching PWM inverter with high frequency transformer for large current output

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

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

19 Citations (Scopus)

Abstract

This paper presents a new circuit topology of dc busline switch-assisted full-bridge soft-switching PWM inverter type dc-dc power converter which is composed of typical voltage source H full-bridge type high frequency PWM inverter in addition to a single dc busline side power semiconductor switching device for PWM scheme and a capacitive lossless snubber. Under the newly-proposed high frequency inverter link dc-dc high power conditioning and processing circuit, all active power switches in the full-bridge arms and dc busline can achieve ZVS/ZVT turn-off commutation operation. On the other hand, although the conduction power loss of dc busline switch increases a little, the total turn-off switching losses of full-bridge type PWM inverter and dc busline switch with the single lossless capacitive snubber parallel with dc busline can be significantly decreased. As a result, the switching frequency of high frequency inverter power stage using IGBTs can be actually selected more than about 10kHz. The more the switching frequency of full-bridge inverter increases, the more newly-proposed soft-switching dc-dc power converter with a high frequency transformer link has remarkable advantage as for the power conversion efficiency and power density as compared with the conventional hard-switching inverter type dc-dc power converter. The effectiveness of this new converter topology is proved for low voltage and large current dc-dc power supplies from a practical point of views.

Original languageEnglish
Title of host publicationConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Pages1549-1555
Number of pages7
Volume3
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event20th Annual IEEEApplied Power ElectronicsConference and Exposition, APEC 2005 - Austin, TX, United States
Duration: Mar 6 2005Mar 10 2005

Other

Other20th Annual IEEEApplied Power ElectronicsConference and Exposition, APEC 2005
CountryUnited States
CityAustin, TX
Period3/6/053/10/05

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Keywords

  • Active power switch
  • DC-DC power converter
  • High frequency transformer link
  • Lossless snubbing capacitor
  • Soft-switching PWM arc welding machine
  • Voltage source full-bridge topology

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Morimoto, K., Doi, T., Manabe, H., Nakaoka, M., Lee, H. W., Ahmed, N. A., Hiraki, E., & Ahmed, T. (2005). Next generation high efficiency high power dc-dc converter incorporating active switch and snubbing capacitor assisted full-bridge soft-switching PWM inverter with high frequency transformer for large current output. In Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC (Vol. 3, pp. 1549-1555). [1453242] https://doi.org/10.1109/APEC.2005.1453242