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http://dx.doi.org/10.5370/KIEE.2010.59.11.1990

Analysis of Radial Force on a Permanent Magnet Synchronous Motor Caused by Dimensional Variation  

Lee, Chee-Woo (삼성전기 중앙연구소)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.59, no.11, 2010 , pp. 1990-1995 More about this Journal
Abstract
Main reasons for causing vibration in a permanent magnet synchronous motor (PMSM) are torque ripple and radial force harmonics, and hence, both of them are undesirable in high-precision machine tools and accurate motion-control actuators. Recent research on radial force is the prediction of major vibration frequencies and modes in terms of motor design such as different winding types and a fractional slot number per pole in the stator. Also, proper phase current has been investigated for minimizing radial force harmonics. During the previous studies, all the motors are assumed to be ideally built up in terms of mechanical dimensions, but it is impossible due to dimensional variation within or outside tolerance in production. Therefore, in this paper, the effect of several key factors on radial force is examined and compared regarding manufacturing imperfection.
Keywords
PMSM; Vibration; Radial force; Dimensional defects;
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  • Reference
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