Magnet Skew Technology Investigation for the Reduction of PMLSM Thrust Ripple

Jiong Jiong Cai; Jia Qi Ren; Liang Cheng; Yun Yue Ye

doi:10.4028/www.scientific.net/AMR.476-478.890

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Magnet Skew Technology Investigation for the...

Magnet Skew Technology Investigation for the Reduction of PMLSM Thrust Ripple

Abstract:

Thrust characteristics of permanent magnet linear synchronous motor (PMLSM) are analyzed. It shows that frequency spectrums of thrust ripple, which are mainly caused by end-effect, are quite similar for linear motors with different pole/slot combinations. To apply magnet skew technology, a method using piecewise magnet for skewing factor computation is introduced. According to this piecewise method, a policy for analyzing 3D skew effect model using 2D FEM algorithm is investigated. The application on a 14-pole/12-slot PMLSM validated the algorithm.