Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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2D Analysis Approach Method of a Small BLDC Motor Having Permanent Magnet Overhang Structure

영구자석 오버행 구조를 가진 소형 BLDC 모터의 2차원 해석 접근 방법

  • 김회천 (경남대학교 공대 전기공학과) ;
  • 정태욱 (경남대학교 공대 전기공학과)
  • Received : 2012.04.20
  • Accepted : 2012.06.04
  • Published : 2012.07.31
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Abstract

This paper deals with the characteristic analysis of small power brushless DC (BLDC) motor considering the rotor magnet overhang flux. In the driving characteristics analysis using 2D FEA (Finite Element Analysis), the rotor magnet overhang effect can't be considered and it should be neglected. To consider rotor magnet overhang effect, 3D FEA should be required. But 3D FEA requires very long calculation time even though the high specification computer is used. In this paper, the 3D electromagnetic model of BLDC motor is approximated as the 2D electromagnetic model considering overhang effect. In this paper, the concept of overhang coefficient is applied, and the coefficient according to load torque variance is deduced.

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References

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