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유효한 2차원 모델을 이용한 리니어 브레이크 성능 해석
한필완(Han Pil-wan),전연도(Chun Yon-Do),이주(Lee Ju),이관섭(Lee Kwan Seop) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper presents the efficient 2-D linear brake analysis model which can compensate the lateral leakage flux by changingng the airgap length and magneto-motive force(MMF). The linkage flux of the 2-D analysis is larger than that of 3-D analysis. This is caused by the assumption in 2-D analysis that geometric and physical values are constant along the perpendicular direction(z) to the analysis region. The equivalent MMF have been calculated from the linkage flux difference between the 2-D and 3-D analyses which are performed at zero velocity. The performances of the linear brake have been analyzed effectively by using the compensated 2-D models without using 3-D FEM.
이주(Lee Ju),전연도(Chun Yon Do),이관섭(Lee Kwan Seop) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
Linear Synchronous Motor has a large airgap comparing with rotary-type motor and especially, Permanent Magnet Linear Synchronous Motor(PM-LSM) which uses permanent magnet as a magnetic field, has a very large effective magnet airgap owing to permanent magnet structure. Accordingly, in case of 2-0 analysis of the motor, the analysis error becomes large because leakage flux by which normal direction of the analysis region can not be considered. In this paper, the characteristic of PM-LSM for Maglev vehicle is analyzed exactly by 3-D Finite Element Method(3-D FEM). As the result, the effect of lateral-direction airgap magnetic flux density distribution on the analysis precision has been investigated and the motor characteristics according to primary motor parameter have been also made clear quantitatively. The accuracy of 3-0 FEM has been confirmed by comparing the calculated results with the experimental results.