Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES

Toshiyuki Mito; Akifumi Kawagoe; Hirotaka Chikaraishi; Kagao Okumura; Ryo Abe; Tsutomu Henmi; Ryuji Maekawa; Kazutaka Seo; Tomosumi Baba; Mitsuhiro Yokota; Yoshitaka Morita; Hideki Ogawa; Kenji Yamauchi; Masataka Iwakuma; Fumio Sumiyoshi

doi:10.1109/TASC.2005.849339

Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES

Toshiyuki Mito
, Akifumi Kawagoe
, Hirotaka Chikaraishi
, Kagao Okumura
, Ryo Abe
, Tsutomu Henmi
, Ryuji Maekawa
, Kazutaka Seo
, Tomosumi Baba
, Mitsuhiro Yokota
, Yoshitaka Morita
, Hideki Ogawa
, Kenji Yamauchi
, Masataka Iwakuma
, Fumio Sumiyoshi

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

8 Scopus citations

Abstract

We are planning to develop a 1 MW, 1 sec UPS-SMES for a protection from a momentary voltage drop and an instant power failure. As the first step, we have been developing a 100 kJ class prototype UPS-SMES, using a low temperature superconducting coil because of its better cost and performance over the high temperature superconducting coil. However, the difficulty to utilize a pool-boiling LTS pulse coil is the reliability of operation. To solve this problem, a conduction-cooled LTS pulse coil has been designed and fabricated as a key component of the UPS-SMES. The reduction of AC loss and high stability are required for the SC conductor for the conduction-cooled coil because of a limited cooling capacity. The SC conductor of a NbTi/Cu compacted strand cable extruded with an aluminum is designed to have the anisotropic AC loss properties to minimize the coupling loss under the specified orientation of the time varying magnetic field. The coil was wound with a new twist-winding method in which the variation of twist angle of the conductor was controlled with the winding machine designed specifically for this purpose. The fabrication technique and performance of a conduction-cooled prototype LTS pulse coil are described.

Original language	English
Pages (from-to)	1935-1938
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	15
Issue number	2 PART II
DOIs	https://doi.org/10.1109/TASC.2005.849339
State	Published - Jun 2005
Externally published	Yes

Funding

Manuscript received October 5, 2004. This work is supported in part by the grant of NEDO and the grant-in aid for Scientific Research (#16206028). T. Mito, H. Chikaraishi, R. Maekawa, K. Seo, T. Baba, M. Yokota, Y. Morita, H. Ogawa, and K. Yamauchi are with the National Institute for Fusion Science, Gifu 509-5292, Japan (e-mail: [email protected]). A. Kawagoe and F. Sumiyoshi are with the Kagoshima University, Kagoshima 890-0065, Japan. K. Okumura is with the Technova Inc., Tokyo 100-0011, Japan. R. Abe is with the IDX Co., Tokyo 141-0022, Japan. T. Henmi is with the Graduate University for Advanced Studies, Gifu 509-5292, Japan. M. Iwakuma is with the Kyushu University, Fukuoka 812-8581, Japan. Digital Object Identifier 10.1109/TASC.2005.849339

Keywords

Conduction cooled
Momentary voltage drop
Superconducting pulse coil
UPS-SMES

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10.1109/TASC.2005.849339

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Mito, T., Kawagoe, A., Chikaraishi, H., Okumura, K., Abe, R., Henmi, T., Maekawa, R., Seo, K., Baba, T., Yokota, M., Morita, Y., Ogawa, H., Yamauchi, K., Iwakuma, M., & Sumiyoshi, F. (2005). Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES. IEEE Transactions on Applied Superconductivity, 15(2 PART II), 1935-1938. https://doi.org/10.1109/TASC.2005.849339

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title = "Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES",

abstract = "We are planning to develop a 1 MW, 1 sec UPS-SMES for a protection from a momentary voltage drop and an instant power failure. As the first step, we have been developing a 100 kJ class prototype UPS-SMES, using a low temperature superconducting coil because of its better cost and performance over the high temperature superconducting coil. However, the difficulty to utilize a pool-boiling LTS pulse coil is the reliability of operation. To solve this problem, a conduction-cooled LTS pulse coil has been designed and fabricated as a key component of the UPS-SMES. The reduction of AC loss and high stability are required for the SC conductor for the conduction-cooled coil because of a limited cooling capacity. The SC conductor of a NbTi/Cu compacted strand cable extruded with an aluminum is designed to have the anisotropic AC loss properties to minimize the coupling loss under the specified orientation of the time varying magnetic field. The coil was wound with a new twist-winding method in which the variation of twist angle of the conductor was controlled with the winding machine designed specifically for this purpose. The fabrication technique and performance of a conduction-cooled prototype LTS pulse coil are described.",

keywords = "Conduction cooled, Momentary voltage drop, Superconducting pulse coil, UPS-SMES",

author = "Toshiyuki Mito and Akifumi Kawagoe and Hirotaka Chikaraishi and Kagao Okumura and Ryo Abe and Tsutomu Henmi and Ryuji Maekawa and Kazutaka Seo and Tomosumi Baba and Mitsuhiro Yokota and Yoshitaka Morita and Hideki Ogawa and Kenji Yamauchi and Masataka Iwakuma and Fumio Sumiyoshi",

year = "2005",

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doi = "10.1109/TASC.2005.849339",

language = "English",

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Mito, T, Kawagoe, A, Chikaraishi, H, Okumura, K, Abe, R, Henmi, T, Maekawa, R, Seo, K, Baba, T, Yokota, M, Morita, Y, Ogawa, H, Yamauchi, K, Iwakuma, M & Sumiyoshi, F 2005, 'Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES', IEEE Transactions on Applied Superconductivity, vol. 15, no. 2 PART II, pp. 1935-1938. https://doi.org/10.1109/TASC.2005.849339

TY - JOUR

T1 - Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES

AU - Mito, Toshiyuki

AU - Kawagoe, Akifumi

AU - Chikaraishi, Hirotaka

AU - Okumura, Kagao

AU - Abe, Ryo

AU - Henmi, Tsutomu

AU - Maekawa, Ryuji

AU - Seo, Kazutaka

AU - Baba, Tomosumi

AU - Yokota, Mitsuhiro

AU - Morita, Yoshitaka

AU - Ogawa, Hideki

AU - Yamauchi, Kenji

AU - Iwakuma, Masataka

AU - Sumiyoshi, Fumio

PY - 2005/6

Y1 - 2005/6

N2 - We are planning to develop a 1 MW, 1 sec UPS-SMES for a protection from a momentary voltage drop and an instant power failure. As the first step, we have been developing a 100 kJ class prototype UPS-SMES, using a low temperature superconducting coil because of its better cost and performance over the high temperature superconducting coil. However, the difficulty to utilize a pool-boiling LTS pulse coil is the reliability of operation. To solve this problem, a conduction-cooled LTS pulse coil has been designed and fabricated as a key component of the UPS-SMES. The reduction of AC loss and high stability are required for the SC conductor for the conduction-cooled coil because of a limited cooling capacity. The SC conductor of a NbTi/Cu compacted strand cable extruded with an aluminum is designed to have the anisotropic AC loss properties to minimize the coupling loss under the specified orientation of the time varying magnetic field. The coil was wound with a new twist-winding method in which the variation of twist angle of the conductor was controlled with the winding machine designed specifically for this purpose. The fabrication technique and performance of a conduction-cooled prototype LTS pulse coil are described.

AB - We are planning to develop a 1 MW, 1 sec UPS-SMES for a protection from a momentary voltage drop and an instant power failure. As the first step, we have been developing a 100 kJ class prototype UPS-SMES, using a low temperature superconducting coil because of its better cost and performance over the high temperature superconducting coil. However, the difficulty to utilize a pool-boiling LTS pulse coil is the reliability of operation. To solve this problem, a conduction-cooled LTS pulse coil has been designed and fabricated as a key component of the UPS-SMES. The reduction of AC loss and high stability are required for the SC conductor for the conduction-cooled coil because of a limited cooling capacity. The SC conductor of a NbTi/Cu compacted strand cable extruded with an aluminum is designed to have the anisotropic AC loss properties to minimize the coupling loss under the specified orientation of the time varying magnetic field. The coil was wound with a new twist-winding method in which the variation of twist angle of the conductor was controlled with the winding machine designed specifically for this purpose. The fabrication technique and performance of a conduction-cooled prototype LTS pulse coil are described.

KW - Conduction cooled

KW - Momentary voltage drop

KW - Superconducting pulse coil

KW - UPS-SMES

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DO - 10.1109/TASC.2005.849339

M3 - Article

AN - SCOPUS:22044450070

SN - 1051-8223

VL - 15

SP - 1935

EP - 1938

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 PART II

ER -

Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES

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Keywords

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