Conference Paper

3D analysis of circumferential and axial segmentation effect on magnet eddy current losses in permanent magnet synchronous machines with concentrated windings

Inst. for Electr. Energy Conversion, Darmstadt Univ. of Technol., Darmstadt, Germany
DOI: 10.1109/ICELMACH.2010.5608182 Conference: Electrical Machines (ICEM), 2010 XIX International Conference on
Source: IEEE Xplore

ABSTRACT Eddy current losses calculations in permanent magnets (PM), using 3D analytical and numerical methods are presented. Axial and circumferential segmentation effects on the reduction of eddy currents are investigated. The eddy currents are induced by the stator magnetic field space harmonics, caused by the winding distribution and the slot opening at sinusoidal current supply. Computations are done for two different three phase PM synchronous machines with surface mounted magnets and concentrated stator windings.