Unbalanced magnetic pull due to simultaneous existence of static and dynamic eccentricities and uneven magnetization in permanent magnet motors

J Y Song,G H Jang,K J Kang,C H Kang

doi:10.1109/apmrc.2016.7524277

Unbalanced magnetic pull due to simultaneous existence of static and dynamic eccentricities and uneven magnetization in permanent magnet motors

J Y Song, G H Jang + Show 2 more

https://doi.org/10.1109/apmrc.2016.7524277

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Publication Date: Jul 1, 2016

Citations: 7

#Permanent Magnet Motor #Dynamic Eccentricities + Show 8 more

Abstract
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Abstract

We mathematically and numerically investigate the characteristics of unbalanced magnetic pull (UMP) in a permanent magnet (PM) motor due to simultaneous existence of static and dynamic eccentricities and uneven magnetization of PM. We mathematically show that pole number ±1 and pole number±2 harmonic components of UMP are generated due to static eccentricity with uneven magnetization and that pole number±m harmonic components of UMP are generated due to static eccentricity with dynamic eccentricity. Finite element analysis is conducted to verify the mathematical equations.

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