Methods to Reduce the Cogging Torque in Permanent Magnet Synchronous Machines

  • N. Levin Institute of Physical Energetics
  • S. Orlova Institute of Physical Energetics
  • V. Pugachov Institute of Physical Energetics
  • Baiba Ose-Zala Institute of Physical Energetics
  • Edgars Jakobsons Riga Technical University
Keywords: Torque, finite element method, permanent magnet machines

Abstract

The phenomenon of cogging torque in permanent magnet synchronous generators with concentrated windings is considered in this work. Dependence of fluctuation amplitude of the torque on width of stator slot opening is researched. The method to reduce the cogging torque by skewing of stator slot and opening of stator slot width equal distance between magnet and tooth on the rotor is described. The construction of this generator is obtained on the basis of numerical simulation results.

DOI: http://dx.doi.org/10.5755/j01.eee.19.1.3248

Published
2013-01-08
Section
ELECTRICAL ENGINEERING