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논문 기본 정보

자료유형
학술저널
저자정보
Bong, Uijong (Department of Electrical and Computer Engineering, Seoul National University) An, Soobin (Department of Electrical and Computer Engineering, Seoul National University) Im, Chaemin (Department of Electrical and Computer Engineering, Seoul National University) Kim, Jaemin (Department of Electrical and Computer Engineering, Seoul National University) Hahn, Seungyong (Department of Electrical and Computer Engineering, Seoul National University)
저널정보
한국초전도저온학회 한국초전도·저온공학회논문지 한국초전도·저온공학회논문지 제21권 제1호
발행연도
2019.1
수록면
25 - 30 (6page)

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This paper presents a conceptual design approach of air-cored synchronous machine with high temperature superconductor (HTS) field winding. With a given configuration of a target machine, boundary conditions are set in the cylindrical coordinate system and analytic field calculation is performed by solving a governing equation. To set proper boundary conditions, current distributions of the field winding and the armature winding are expressed by the Fourier expansion. Based on analytic magnetic field calculation results, key machine parameters are calculated: 1) inductance, 2) critical current of field winding, 3) weight, 4) HTS conductor consumption, and 5) efficiency. To investigate all potential design options, 6 sweeping parameters are determined to characterize the geometry of the machine and the parameter calculation process is performed for each design options. Among design options satisfying constraints including >80 % critical current margin and >95 % efficiency, in this paper, a first-cut design was selected in terms of overall machine weight and HTS conductor consumption to obtain a lightweight and economical design. The goal is to design a 5-MW machine by referring to the same capacity machine that was previously constructed by another group. Our design output is compared with finite element method (FEM) simulation to validate our design approach.

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