AC Losses in Coated Conductors Integrated
for Practical Applications and Strategies for Their Reduction

Naoyuki Amemiya, Taketsune Nakamura, Kaoru Ito, Katsutoku Takeuchi,
Zhenan Jiang, Kazuya Ohmatsu, Takato Masuda, Masashi Yagi,
Shinichi Mukoyama, Naoji Kashima, Shigeo Nagaya, Yuh Shiohara

Abstract — The AC loss characteristics of coated conductors integrated with various manners, such as tape-on-tape stack, mono and multi layer polygonal assemblies, are presented and strategies for AC loss reduction are discussed. With respect to the composite structure, we focus on superconductor and ferromagnetic composite structure in an isolated coated conductor and in assembled coated conductors. Influence of nonuniformity of critical current density is discussed from the viewpoint of cutting a coated conductor into narrow strips.

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