• Title/Summary/Keyword: Kwon Seop

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An Adaptive Mesh Refinement Scheme for 3D Non-Linear Finite Element Analysis of Magnetostatic Problems (3차원 비선형 정자장 문제의 유한요소 해석을 위한 적응 요소분할 기법)

  • Choi, Yong-Kwon;Seop, Ryu-Jae;Koh, Chang-Seop
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.6
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    • pp.306-313
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    • 2006

  • A three dimensional adaptive finite element refinement algorithm is developed for non-linear magnetostatic field problems. In the method, the edge elements are used for finite element formulation, and the local error in each element is estimated from the fact that the tangential components of magnetic field intensity and the normal components of magnetic flux density should be continuous at the interface of the two adjacent elements. Based on the estimated error, the elements which have big error are divided into several elements using bisection method. The effectiveness of the developed algorithm is proved through numerical examples.

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Pole Shape Optimization of Switched Reluctance Motor for Reduction of Torque Ripple (토오크 리플 저감을 위한 스위치드 릴럭턴스 전동기의 폴 형상 최적화)

  • Choi, Yong-Kwon;Yoon, Hee-Sung;Koh, Chang-Seop;Kim, Hyo-Jun
    • Proceedings of the KIEE Conference
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    • 2006.04b
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    • pp.118-120
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    • 2006

  • This paper proposes a new stator pole shape having non-uniform air-gap in order to minimize the undesirable torque ripple of switched reluctance motor(SRM). Through numerical analysis using finite element method(FEM) and optimization, the proposed pole-shape-optimized stator is proven to give reduced torque ripple.

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폐국균증의 임상적 고찰

  • Kwon, Jong-Beom;Shim, Seong-Bo;Park, Geon;Kim, Jae-Gil;Kim, Chi-Gyeong;Cho, Geon-hyeong;Wang, Yeong-Pil;Lee, Sun-Hui;Kwak, Moon-Seop;Kim, Se-Hwa
    • Proceedings of the KTCVS Conference
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    • 1995.10a
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    • pp.98-98
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    • 1995

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