Effects of magnet shape on torque characteristics of Interior Permanent Magnet machines

Author

Guo, Lusu ; Parsa, Leila

Author_Institution

Dept. of Electr., Comput. & Syst. Eng., Rensselaer Polytech. Inst. Troy, Troy, NY

fYear

2009

fDate

20-22 April 2009

Firstpage

93

Lastpage

97

Abstract

Interior Permanent Magnet (IPM) motors are widely used in various industrial applications due to many advantages such as high power density, high efficiency, low manufacturing cost and wide constant power operating range. Compared to Surface Mounted Permanent Magnet (SMPM) motors, IPM motors take advantage of both magnetic torque produced by permanent magnets and reluctance torque, which is due to unequal reluctance of the d and q axis. In this paper, the effects of permanent magnet configurations on motor performance are investigated. Three-phase, 8-pole, 9-slot modular and three-phase 4-pole, 36-slot conventional IPM machines have been considered in this study. The effect of straight-shape, V-shape and U-shape permanent magnets on machine performance characteristics are compared through finite element analysis (FEA). The average torque, torque ripple, phase back-EMFs along with constant power operating capability are analyzed.

Keywords

finite element analysis; permanent magnet motors; finite element analysis; interior permanent magnet motors; magnet shape; permanent magnets; reluctance torque; surface mounted permanent magnet motors; Costs; Finite element methods; Magnetic analysis; Manufacturing industries; Permanent magnet machines; Permanent magnet motors; Permanent magnets; Reluctance motors; Shape; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Ship Technologies Symposium, 2009. ESTS 2009. IEEE

Conference_Location

Baltimore, MD

Print_ISBN

978-1-4244-3438-1

Electronic_ISBN

978-1-4244-3439-8

Type

conf

DOI

10.1109/ESTS.2009.4906499

Filename

4906499