Analysis Of Surface Permanent Magnet Machines with Fractional-Slot Concentrated Windings

Authors

Ayman M. EL-Refaie, Marquette UniversityFollow
Thomas M. Jahns, University of Wisconsin-MadisonFollow
Donald W. Novotny, University of Wisconsin-Madison

Document Type

Article

Language

eng

Publication Date

3-21-2006

Publisher

Institute of Electrical and Electronic Engineers (IEEE)

Source Publication

IEEE Transactions on Energy Conversion

Source ISSN

0885-8969

Abstract

This paper presents a closed-form analytical technique for analyzing surface PM machines equipped with fractional-slot concentrated windings. Since this class of winding configuration deviates significantly from conventional sinusoidal distributions, classical steady-state phasor or analytical techniques cannot be used to provide accurate results. The presented analytical model provides a fast and reliable method to analyze and compare candidate machine designs. Stator slotting effects are taken into consideration and a wide range of concentrated winding configurations can be analyzed. This technique is capable of analyzing the machine both below (constant-torque) and above (flux-weakening) base speed. Average torque, cogging torque, and ripple torque are all evaluated. Analytical results are verified using finite element analysis.

Comments

Accepted version. IEEE Transactions on Energy Conversion, Vol. 21, No. 1 (March 21, 2006): 34-43. DOI. © 2006 Institute of Electrical and Electronic Engineers (IEEE). Used with permission.

Recommended Citation

EL-Refaie, Ayman M.; Jahns, Thomas M.; and Novotny, Donald W., "Analysis Of Surface Permanent Magnet Machines with Fractional-Slot Concentrated Windings" (2006). Electrical and Computer Engineering Faculty Research and Publications. 658.
https://epublications.marquette.edu/electric_fac/658