FEA Estimation and Experimental Validation of Solid Rotor and Magnet Eddy Current Loss in Single-sided Axial Flux Permanent Magnet Machines

Authors

Xu Yang, University of Nebraska-LincolnFollow
Dean Patterson, University of Nebraska-LincolnFollow
Jerry Hudgins, University of Nebraska-LincolnFollow
Jessica Colton, Boulder Wind PowerFollow

Date of this Version

2013

Citation

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE Year: 2013

Comments

U.S. Government work

Abstract

The rotor and magnet loss in single-sided axial flux permanent magnet machines with non-overlapped windings is studied in this paper. FEA estimations of the loss are carried out using both 2-D and 3-D modeling. The rotor and magnet losses are determined separately for stator slot passing and MMF space harmonics from currents in the stator. The segregation of loss between the solid rotor plate and the magnet is addressed. The eddy current loss reduction by magnet segments is discussed as well. The prototype 24 slot/22 pole single-sided AFPMs, fabricated with both single layer and double layer windings are assembled. Methods of loss segregation are illustrated in order to separate the eddy current loss.