32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components

Tetsuya Etoh, Tarek Ahmed, Eiji Hiraki, Keiki Morimoto, Khairy Fathy, Nabil A. Ahmed, Hyun Woo Lee, Mutsuo Nakaoka

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

2 Citations (Scopus)

Abstract

The conduction losses of the active switches can be lowered, which are connected to the primary side of extremely step-down high frequency transformer because of low voltage large current rectifier configuration. This paper presents two new circuit topologies of DC busline side 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. One topology of proposed DC-DC converters is composed of a typical voltage source-fed full-bridge high frequency PWM inverter using DC busline side series power semiconductor 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 commutations and the total turn-off switching power losses of all active switches can be reduced for high-frequency switching action. It is proved that the more the switching frequency of full-bridge soft switching inverter increases, the more soft-switching PWM DC-DC converter with a high frequency transformer link has remarkable advantages for its efficiency and power density as compared with the conventional hard-switching PWM inverter type DC-DC converter. In this paper, another modified version topology of utility AC 200V-rms grid-connected soft switching DC-DC converter mentioned above is also implemented and evaluated, which is more suitable for utility 400V-rms grid power source. 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.

Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
Pages1159-1165
Number of pages7
Volume2005
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventIECON 2005: 31st Annual Conference of IEEE Industrial Electronics Society - Raleigh, NC, United States
Duration: Nov 6 2005Nov 10 2005

Other

OtherIECON 2005: 31st Annual Conference of IEEE Industrial Electronics Society
CountryUnited States
CityRaleigh, NC
Period11/6/0511/10/05

Fingerprint

High frequency transformers
DC-DC converters
Pulse width modulation
Rails
Capacitors
Switches
Topology
Electric potential
Switching frequency
Welding machines
Zero voltage switching
Electric network topology
Electric commutation
Electric arc welding
Soft switching (power electronics)
Semiconductor materials

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Etoh, T., Ahmed, T., Hiraki, E., Morimoto, K., Fathy, K., Ahmed, N. A., ... Nakaoka, M. (2005). 32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components. In IECON Proceedings (Industrial Electronics Conference) (Vol. 2005, pp. 1159-1165). [1569069] https://doi.org/10.1109/IECON.2005.1569069

32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components. / Etoh, Tetsuya; Ahmed, Tarek; Hiraki, Eiji; Morimoto, Keiki; Fathy, Khairy; Ahmed, Nabil A.; Lee, Hyun Woo; Nakaoka, Mutsuo.

IECON Proceedings (Industrial Electronics Conference). Vol. 2005 2005. p. 1159-1165 1569069.

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

Etoh, T, Ahmed, T, Hiraki, E, Morimoto, K, Fathy, K, Ahmed, NA, Lee, HW & Nakaoka, M 2005, 32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components. in IECON Proceedings (Industrial Electronics Conference). vol. 2005, 1569069, pp. 1159-1165, IECON 2005: 31st Annual Conference of IEEE Industrial Electronics Society, Raleigh, NC, United States, 11/6/05. https://doi.org/10.1109/IECON.2005.1569069
Etoh T, Ahmed T, Hiraki E, Morimoto K, Fathy K, Ahmed NA et al. 32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components. In IECON Proceedings (Industrial Electronics Conference). Vol. 2005. 2005. p. 1159-1165. 1569069 https://doi.org/10.1109/IECON.2005.1569069
Etoh, Tetsuya ; Ahmed, Tarek ; Hiraki, Eiji ; Morimoto, Keiki ; Fathy, Khairy ; Ahmed, Nabil A. ; Lee, Hyun Woo ; Nakaoka, Mutsuo. / 32V-300A/60kHz edge resonant soft-switching PWM DC/DC converter with DC rail series switch-parallel capacitor snubber assisted by high-frequency transformer parasitic components. IECON Proceedings (Industrial Electronics Conference). Vol. 2005 2005. pp. 1159-1165
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AU - Ahmed, Tarek

AU - Hiraki, Eiji

AU - Morimoto, Keiki

AU - Fathy, Khairy

AU - Ahmed, Nabil A.

AU - Lee, Hyun Woo

AU - Nakaoka, Mutsuo

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N2 - The conduction losses of the active switches can be lowered, which are connected to the primary side of extremely step-down high frequency transformer because of low voltage large current rectifier configuration. This paper presents two new circuit topologies of DC busline side 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. One topology of proposed DC-DC converters is composed of a typical voltage source-fed full-bridge high frequency PWM inverter using DC busline side series power semiconductor 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 commutations and the total turn-off switching power losses of all active switches can be reduced for high-frequency switching action. It is proved that the more the switching frequency of full-bridge soft switching inverter increases, the more soft-switching PWM DC-DC converter with a high frequency transformer link has remarkable advantages for its efficiency and power density as compared with the conventional hard-switching PWM inverter type DC-DC converter. In this paper, another modified version topology of utility AC 200V-rms grid-connected soft switching DC-DC converter mentioned above is also implemented and evaluated, which is more suitable for utility 400V-rms grid power source. 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.

AB - The conduction losses of the active switches can be lowered, which are connected to the primary side of extremely step-down high frequency transformer because of low voltage large current rectifier configuration. This paper presents two new circuit topologies of DC busline side 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. One topology of proposed DC-DC converters is composed of a typical voltage source-fed full-bridge high frequency PWM inverter using DC busline side series power semiconductor 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 commutations and the total turn-off switching power losses of all active switches can be reduced for high-frequency switching action. It is proved that the more the switching frequency of full-bridge soft switching inverter increases, the more soft-switching PWM DC-DC converter with a high frequency transformer link has remarkable advantages for its efficiency and power density as compared with the conventional hard-switching PWM inverter type DC-DC converter. In this paper, another modified version topology of utility AC 200V-rms grid-connected soft switching DC-DC converter mentioned above is also implemented and evaluated, which is more suitable for utility 400V-rms grid power source. 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.

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