Design, analysis and fabrication of a high-performance fractional-slot concentrated winding surface PM machine

Author

Reddy, Patel B. ; Jahns, T.M. ; McCleer, Patrick J. ; Bohn, Theodore P.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

1074

Lastpage

1081

Abstract

A high-performance 55 kW (peak) fractional-slot concentrated winding (FSCW) surface permanent magnet (SPM) machine has been designed to meet demanding performance requirements based on the FreedomCar advanced traction motor requirements prepared by the US Department of Energy. This paper describes key steps in the design, analysis, fabrication, and testing of this machine. Design challenges arising from the high-speed, high-efficiency requirements are presented followed by a discussion of design features that have been introduced to address them. A prototype version of the machine has been fabricated using a segmented stator configuration and segmented neodymium-iron rotor magnets. Test results gathered to date demonstrate promising torque production and efficiency characteristics that are consistent with the machine performance predictions.

Keywords

machine windings; permanent magnet machines; stators; traction motors; FreedomCar; US Department of Energy; fractional-slot concentrated winding surface permanent magnet machine; neodymium-iron rotor magnets; power 55 kW; stator; traction motor; Magnetic flux; Saturation magnetization; Stator windings; Torque; Windings; Wire; AC losses; brushless machines; high speed; proximity losses; surface permanent magnet synchronous machine;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5617859

Filename

5617859