Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter

R. Murata, T. Shirakawa, Kazuhiro Umetani, Eiji Hiraki

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

Abstract

The high-frequency transformers used for isolated DC-DC converters tend to have large volume compared with the other components. Therefore, increasing the power density of the transformer is indispensable for increasing the power density of the DC-DC converter. Reducing the dead space of the transformer is one of the effective solutions. It is well-known that the thinly extended core structure reduces the dead space around the transformer formed by the windings protruding to the outside of the core. However, it has not been clarified how much the thinly extended core structure affects the reducing power loss of the transformer. In this paper, the effect of introducing the thinly extended core structure into the transformer is quantified by the optimization of the convertible design parameters of the transformer with systematic round-robin calculation. The result revealed the volume reduction effect by the thinly extended core was greater than the simply dead space reduction effect.

Original languageEnglish
Title of host publicationICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2132-2138
Number of pages7
ISBN (Electronic)9788957083130
Publication statusPublished - May 1 2019
Event10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia - Busan, Korea, Republic of
Duration: May 27 2019May 30 2019

Publication series

NameICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia

Conference

Conference10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia
CountryKorea, Republic of
CityBusan
Period5/27/195/30/19

Fingerprint

DC-DC Converter
Transformer
DC-DC converters
High frequency transformers
Parameter Design
Tend
Optimization

Keywords

  • Dead space
  • Envelope volume
  • Isolated DC-DC converter
  • Power density
  • Transformer

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

Cite this

Murata, R., Shirakawa, T., Umetani, K., & Hiraki, E. (2019). Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter. In ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia (pp. 2132-2138). [8796964] (ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia). Institute of Electrical and Electronics Engineers Inc..

Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter. / Murata, R.; Shirakawa, T.; Umetani, Kazuhiro; Hiraki, Eiji.

ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia. Institute of Electrical and Electronics Engineers Inc., 2019. p. 2132-2138 8796964 (ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia).

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

Murata, R, Shirakawa, T, Umetani, K & Hiraki, E 2019, Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter. in ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia., 8796964, ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia, Institute of Electrical and Electronics Engineers Inc., pp. 2132-2138, 10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia, Busan, Korea, Republic of, 5/27/19.
Murata R, Shirakawa T, Umetani K, Hiraki E. Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter. In ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia. Institute of Electrical and Electronics Engineers Inc. 2019. p. 2132-2138. 8796964. (ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia).
Murata, R. ; Shirakawa, T. ; Umetani, Kazuhiro ; Hiraki, Eiji. / Volume Reduction Effect of Thinly Extended Core Structure for Transformer in Isolated DC-DC Converter. ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 2132-2138 (ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia).
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N2 - The high-frequency transformers used for isolated DC-DC converters tend to have large volume compared with the other components. Therefore, increasing the power density of the transformer is indispensable for increasing the power density of the DC-DC converter. Reducing the dead space of the transformer is one of the effective solutions. It is well-known that the thinly extended core structure reduces the dead space around the transformer formed by the windings protruding to the outside of the core. However, it has not been clarified how much the thinly extended core structure affects the reducing power loss of the transformer. In this paper, the effect of introducing the thinly extended core structure into the transformer is quantified by the optimization of the convertible design parameters of the transformer with systematic round-robin calculation. The result revealed the volume reduction effect by the thinly extended core was greater than the simply dead space reduction effect.

AB - The high-frequency transformers used for isolated DC-DC converters tend to have large volume compared with the other components. Therefore, increasing the power density of the transformer is indispensable for increasing the power density of the DC-DC converter. Reducing the dead space of the transformer is one of the effective solutions. It is well-known that the thinly extended core structure reduces the dead space around the transformer formed by the windings protruding to the outside of the core. However, it has not been clarified how much the thinly extended core structure affects the reducing power loss of the transformer. In this paper, the effect of introducing the thinly extended core structure into the transformer is quantified by the optimization of the convertible design parameters of the transformer with systematic round-robin calculation. The result revealed the volume reduction effect by the thinly extended core was greater than the simply dead space reduction effect.

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KW - Power density

KW - Transformer

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