2010年11月
A study on electromagnetic and mechanical characteristics of the field coil in HTS motor
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
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- 巻
- 470
- 号
- 20
- 開始ページ
- 1756
- 終了ページ
- 1762
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.physc.2010.05.201
- 出版者・発行元
- ELSEVIER SCIENCE BV
High temperature superconducting (HTS) motors electromagnetically consist of a rotator wound with HTS wires and an armature with conventional copper wires like Litz wire. The HTS rotor windings, as field coils, consist of a straight part and an end-ring part. Because a major rotation torque is induced by an interaction between magnetic fields and current-carrying conductors in the straight part, most of mechanical stresses in the motor occur at the straight part. An end-ring is placed in the edge of the straight part and used to connect to each adjacent straight-part coils. The magnetic fields by coil currents concentrate on the end-ring part, therefore, it is expected that the critical current of the entire coil, straight and end-ring, can be determined by the magnitude of the field in the end-ring. This paper deals with the overall J(c) degradation in the end-ring part by self-field generated from the coil. In addition to electromagnetic analyses, we have performed a numerical analysis in order to evaluate mechanical stresses in the straight part of field coil by armature reaction on steady-state operation. The analytical results will be presented in this paper. (c) 2010 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.physc.2010.05.201
- ISSN : 0921-4534
- Web of Science ID : WOS:000282241800191