Structural Optimization of Double-Secondary PMSLM Based on Spatial Harmonic Suppression

In view of that detent force (DF) spatial harmonic has great influence on thrust ripple of permanent magnet synchronous linear motor (PMSLM), a harmonic suppression method is proposed. DF of the PMSLM model is calculated by finite element method (FEM) and its harmonic spectrum is achieved by Fourier...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 416-417; no. Linear Drives for Industry Applications IX; pp. 1251 - 1256
Main Authors Zhao, Ji Wen, Chen, Pan Pan
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.09.2013
Subjects
Finite element method
Fourier transforms
Harmonic distortion
Harmonics
Mathematical models
Optimization
Permanent magnets
Quantitative analysis
Structural Optimization
THD
Double-Secondary PMSLM
Spatial Harmonic Suppression
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Summary:In view of that detent force (DF) spatial harmonic has great influence on thrust ripple of permanent magnet synchronous linear motor (PMSLM), a harmonic suppression method is proposed. DF of the PMSLM model is calculated by finite element method (FEM) and its harmonic spectrum is achieved by Fourier transform (FT). Also total harmonic distortion (THD) is introduced to quantificat spatial harmonic. The effects of air gap, permanent magnet (PM) size, primary size, secondary size and pole-arc coefficient upon DF are analyzed. In order to minimize THD, orthogonal optimization design is adopted to optimize PMSLM structural parameters. A double-secondary PMSLM is chosen as the subject of research in the paper. Based on quantitative calculation, orthogonal experiment and range analysis are used to obtain optimal structures. This paper provides an effective quantitative analysis method for PMSLM spatial harmonic suppression.
Bibliography:Selected, peer reviewed papers from the 9th International Symposium on Linear Drives for Industry Applications (LDIA 2013), July 7-10, 2013, Hangzhou, China
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ISBN:303785863X
9783037858639
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.416-417.1251