Ac loss properties of a 1MVA single-phase HTS power transformer

Masataka Iwakuma; Kazuo Funaki; Kazuhiro Kajikawa; Hideki Tanaka; Takaaki Bohno; Akira Tomioka; Hisao Yamada; Shinichi Nose; Masayuki Konno; Yujiro Yagi; Hiroshi Maruyama; Takenori Ogata; Shigeru Yoshida; Kouichi Ohashi; Katsuya Tsutsumi; Kazuo Honda

doi:10.1109/77.920054

Ac loss properties of a 1MVA single-phase HTS power transformer

Masataka Iwakuma, Kazuo Funaki, Kazuhiro Kajikawa, Hideki Tanaka, Takaaki Bohno, Akira Tomioka, Hisao Yamada, Shinichi Nose, Masayuki Konno, Yujiro Yagi, Hiroshi Maruyama, Takenori Ogata, Shigeru Yoshida, Kouichi Ohashi, Katsuya Tsutsumi, Kazuo Honda

Research output: Contribution to journal › Conference article › peer-review

73 Citations (Scopus)

Abstract

We designed and built a single-phase 1 MVA-22/6.9 kV HTS transformer with the multi-layered cylindrical windings composed of Bi2223 parallel conductors. In advance of the design, the ac loss induced in the windings was estimated on the basis of the observed results in a strand. A subcooled liquid nitrogen cryogenic system with the corresponding cooling capacity was developed and attached to the transformer. The actual ac loss was measured by an electrical method. It was a great part of the total heat load and dominated the temperature rise of subcooled liquid nitrogen. We discussed the validity of the present estimation procedure of the ac loss in the windings as compared with the observed results.

Original language	English
Pages (from-to)	1482-1485
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1 II
DOIs	https://doi.org/10.1109/77.920054
Publication status	Published - Mar 2001
Event	2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: Sept 17 2000 → Sept 22 2000

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Cite this

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title = "Ac loss properties of a 1MVA single-phase HTS power transformer",

abstract = "We designed and built a single-phase 1 MVA-22/6.9 kV HTS transformer with the multi-layered cylindrical windings composed of Bi2223 parallel conductors. In advance of the design, the ac loss induced in the windings was estimated on the basis of the observed results in a strand. A subcooled liquid nitrogen cryogenic system with the corresponding cooling capacity was developed and attached to the transformer. The actual ac loss was measured by an electrical method. It was a great part of the total heat load and dominated the temperature rise of subcooled liquid nitrogen. We discussed the validity of the present estimation procedure of the ac loss in the windings as compared with the observed results.",

author = "Masataka Iwakuma and Kazuo Funaki and Kazuhiro Kajikawa and Hideki Tanaka and Takaaki Bohno and Akira Tomioka and Hisao Yamada and Shinichi Nose and Masayuki Konno and Yujiro Yagi and Hiroshi Maruyama and Takenori Ogata and Shigeru Yoshida and Kouichi Ohashi and Katsuya Tsutsumi and Kazuo Honda",

note = "Funding Information: Manuscript received September 19, 2000. This work was supported in part by the New Energy and Indus. Tech. Develop. Org., Japan. Masataka Iwakuma, Kazuo Funaki, Kazuhiro Ka,jikawa and Hideki Tanaka are with Research Institute of Superconductivity, Kyushu University, 6-10-1 yakozaki, Higashi-ku, Fukuoka 8 12-858 I, Japan (telephone:+81-92-642-4017, e-mail: iwakuma@ees.kyushu-u.ac.jp). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; 2000 Applied Superconductivity Conference ; Conference date: 17-09-2000 Through 22-09-2000",

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T1 - Ac loss properties of a 1MVA single-phase HTS power transformer

AU - Iwakuma, Masataka

AU - Funaki, Kazuo

AU - Kajikawa, Kazuhiro

AU - Tanaka, Hideki

AU - Bohno, Takaaki

AU - Tomioka, Akira

AU - Yamada, Hisao

AU - Nose, Shinichi

AU - Konno, Masayuki

AU - Yagi, Yujiro

AU - Maruyama, Hiroshi

AU - Ogata, Takenori

AU - Yoshida, Shigeru

AU - Ohashi, Kouichi

AU - Tsutsumi, Katsuya

AU - Honda, Kazuo

N1 - Funding Information: Manuscript received September 19, 2000. This work was supported in part by the New Energy and Indus. Tech. Develop. Org., Japan. Masataka Iwakuma, Kazuo Funaki, Kazuhiro Ka,jikawa and Hideki Tanaka are with Research Institute of Superconductivity, Kyushu University, 6-10-1 yakozaki, Higashi-ku, Fukuoka 8 12-858 I, Japan (telephone:+81-92-642-4017, e-mail: iwakuma@ees.kyushu-u.ac.jp). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2001/3

Y1 - 2001/3

N2 - We designed and built a single-phase 1 MVA-22/6.9 kV HTS transformer with the multi-layered cylindrical windings composed of Bi2223 parallel conductors. In advance of the design, the ac loss induced in the windings was estimated on the basis of the observed results in a strand. A subcooled liquid nitrogen cryogenic system with the corresponding cooling capacity was developed and attached to the transformer. The actual ac loss was measured by an electrical method. It was a great part of the total heat load and dominated the temperature rise of subcooled liquid nitrogen. We discussed the validity of the present estimation procedure of the ac loss in the windings as compared with the observed results.

AB - We designed and built a single-phase 1 MVA-22/6.9 kV HTS transformer with the multi-layered cylindrical windings composed of Bi2223 parallel conductors. In advance of the design, the ac loss induced in the windings was estimated on the basis of the observed results in a strand. A subcooled liquid nitrogen cryogenic system with the corresponding cooling capacity was developed and attached to the transformer. The actual ac loss was measured by an electrical method. It was a great part of the total heat load and dominated the temperature rise of subcooled liquid nitrogen. We discussed the validity of the present estimation procedure of the ac loss in the windings as compared with the observed results.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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T2 - 2000 Applied Superconductivity Conference

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ER -

Ac loss properties of a 1MVA single-phase HTS power transformer

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