Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands

Hideki Tanaka; Kouki Matsuda; Masataka Iwakuma; Kazuhiro Kajikawa; Kazuo Funaki; Masayuki Konno; Shinnichi Nose; Munetugu Ueyama; Kazuhiko Hayashi; Kenichi Sato

doi:10.1016/S0921-4534(02)01132-2

Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands

Hideki Tanaka, Kouki Matsuda, Masataka Iwakuma, Kazuhiro Kajikawa, Kazuo Funaki, Masayuki Konno, Shinnichi Nose, Munetugu Ueyama, Kazuhiko Hayashi, Kenichi Sato

Research output: Contribution to journal › Article › peer-review

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Abstract

We adopted superconducting parallel conductors to build a 500 kVA transformer cooled by LN₂. The strands in the parallel conductors are transposed for low ac loss. We have been studying the additional ac loss in parallel conductors, which is induced by the deviation of the transposition points from the optimum ones. It is proportional to the deviation length and the square of the field amplitude, and has Debye-type frequency dependence. However we have not taken into account the effect of the diamagnetic field in the theoretical expressions. It relates with the aspect ratio of a parallel conductor. Hence, in this paper, we investigated the dependence of the additional ac loss on the distance between the strands in a two-strand parallel conductor experimentally.

Original language	English
Pages (from-to)	1810-1813
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	372-376
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(02)01132-2
Publication status	Published - Aug 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(02)01132-2

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Tanaka, H., Matsuda, K., Iwakuma, M., Kajikawa, K., Funaki, K., Konno, M., Nose, S., Ueyama, M., Hayashi, K., & Sato, K. (2002). Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands. Physica C: Superconductivity and its applications, 372-376(PART 3), 1810-1813. https://doi.org/10.1016/S0921-4534(02)01132-2

Tanaka, H, Matsuda, K, Iwakuma, M, Kajikawa, K, Funaki, K, Konno, M, Nose, S, Ueyama, M, Hayashi, K & Sato, K 2002, 'Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands', Physica C: Superconductivity and its applications, vol. 372-376, no. PART 3, pp. 1810-1813. https://doi.org/10.1016/S0921-4534(02)01132-2

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abstract = "We adopted superconducting parallel conductors to build a 500 kVA transformer cooled by LN2. The strands in the parallel conductors are transposed for low ac loss. We have been studying the additional ac loss in parallel conductors, which is induced by the deviation of the transposition points from the optimum ones. It is proportional to the deviation length and the square of the field amplitude, and has Debye-type frequency dependence. However we have not taken into account the effect of the diamagnetic field in the theoretical expressions. It relates with the aspect ratio of a parallel conductor. Hence, in this paper, we investigated the dependence of the additional ac loss on the distance between the strands in a two-strand parallel conductor experimentally.",

author = "Hideki Tanaka and Kouki Matsuda and Masataka Iwakuma and Kazuhiro Kajikawa and Kazuo Funaki and Masayuki Konno and Shinnichi Nose and Munetugu Ueyama and Kazuhiko Hayashi and Kenichi Sato",

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AU - Tanaka, Hideki

AU - Matsuda, Kouki

AU - Iwakuma, Masataka

AU - Kajikawa, Kazuhiro

AU - Funaki, Kazuo

AU - Konno, Masayuki

AU - Nose, Shinnichi

AU - Ueyama, Munetugu

AU - Hayashi, Kazuhiko

AU - Sato, Kenichi

PY - 2002/8

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AB - We adopted superconducting parallel conductors to build a 500 kVA transformer cooled by LN2. The strands in the parallel conductors are transposed for low ac loss. We have been studying the additional ac loss in parallel conductors, which is induced by the deviation of the transposition points from the optimum ones. It is proportional to the deviation length and the square of the field amplitude, and has Debye-type frequency dependence. However we have not taken into account the effect of the diamagnetic field in the theoretical expressions. It relates with the aspect ratio of a parallel conductor. Hence, in this paper, we investigated the dependence of the additional ac loss on the distance between the strands in a two-strand parallel conductor experimentally.

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IS - PART 3

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Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands

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