Effect of Multilayer Windings on Rotor Losses of Interior Permanent Magnet Generator With Fractional-Slot Concentrated-Windings

Author

Afang Sun ; Jian Li ; Ronghai Qu ; Dawei Li

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

Recently, the interior permanent magnet (IPM) machines have become a promising candidate for more and more applications, for their nice performances-wide speed range, considerable power density, and several other advantages. However, there are still some obstacles to overcome to improve the performances of the IPM machines with fractional-slot concentrated-winding (FSCW). Among which, the rotor losses, due to the large amounts of the magnetomotive force harmonics produced by FSCW, is a big threat to safe operation. In this paper, the effect of multilayer windings on rotor losses, especially the eddy-current losses in the permanent magnets of IPM machines with FSCW, is mainly investigated using the 2-D finite element analysis. Side effects on torque performances is also studied and compared with the double-layer windings.

Keywords

eddy current losses; finite element analysis; harmonic analysis; magnetic forces; permanent magnet generators; rotors; torque; 2D finite element analysis; FSCW; IPM machines; eddy current losse; fractional-slot concentrated winding; interior permanent magnet generator rotor loss; magnetomotive force harmonics; multilayer winding; power density; torque performance; Harmonic analysis; Magnetic multilayers; Nonhomogeneous media; Power capacitors; Rotors; Torque; Windings; Fractional-slot concentrated-windings (FSCWs); PM eddy-current losses; interior permanent magnet (PM) machines; multilayer windings; rotor iron losses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2323966

Filename

6971613