Influence of varying magnet pole-arcs and step-skew on permanent magnet AC synchronous motor performance

Authors

METİN AYDIN
OĞUZHAN OCAK
YÜCEL DEMİR

DOI

10.3906/elk-2003-179

Abstract

Minimization or elimination of cogging torque is a significant issue in permanent magnet (PM) motor design process. There are some design techniques to reduce or eliminate this unwanted torque components in PM motors. This paper focuses on two different design techniques, varying magnet pole-arc and step-skew, to reduce cogging torque component in radial flux PM synchronous motors. Different design points which consider pulsating torque components and back-EMF harmonics are obtained via finite element analysis (FEA) for a low power industrial PM motor. A prototype motor is manufactured for one of the desired designs and is tested experimentally. Good agreement is attained between the analysis and experimental results.

Keywords

Permanent magnet motors, servomotors, finite element analysis, cogging torque, torque pulsations, torque ripple

First Page

3304

Last Page

3318

Recommended Citation

AYDIN, METİN; OCAK, OĞUZHAN; and DEMİR, YÜCEL (2020) "Influence of varying magnet pole-arcs and step-skew on permanent magnet AC synchronous motor performance," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 28: No. 6, Article 15. https://doi.org/10.3906/elk-2003-179
Available at: https://journals.tubitak.gov.tr/elektrik/vol28/iss6/15