대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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경계요소법을 이용한 3차원 정자장해석

3-D Magnetostatic Field Analysis Using Boundary Element Method

  • 전기억 (서울대학교 전기공학과) ;
  • 고창섭 (서울대학교 전기공학과) ;
  • 정현교 (강원대학교 전기공학과) ;
  • 한송엽 (서울대학교 전기공학과)
  • Jeon, K.E. (Dept. of Electrical Engineering, Seoul National University) ;
  • Koh, C.S. (Dept. of Electrical Engineering, Seoul National University) ;
  • Jung, H.K. (Dept. of Electrical Engineering, KangWon National University) ;
  • Hahn, S.Y. (Dept. of Electrical Engineering, Seoul National University)
  • 발행 : 1991.07.18
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초록

A three-dimensional magnetostatic problem is analyzed using the boundary element method and the magnetic scalar potential are employed in order to reduce the size of system matrix. Although the total magnetic scalar potential gives very accurate solutions in inner and outer regions of magnetic material, it has limitation on application because the magnetic scalar potential due to applied magnetic field sources is hard to be obtained. The reduced magnetic scalar potential gives more or less inaccurate solutions inside the magnetic material but very accurate solutions outside. Hence it can be concluded that the reduced magnetic scalar potential is very useful when the magnetic fields of outside magnetic material only are interested. It is also shown, from the numerical results, that the linear shape function gives more efficient solutions than the constant shape functions because the former gives more accurate solutions in spite of relatively fewer unknowns than the latter.

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