Switched reluctance motors with segmental rotors

Author

Mecrow, B.C. ; Finch, J.W. ; El-Kharashi, E.A. ; Jack, A.G.

Author_Institution

Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK

Volume

149

Issue

4

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

245

Lastpage

254

Abstract

The magnetic design of switched reluctance motors is examined and an alternative design presented in which the rotor is made from a series of discrete segments. Single-phase machines are initially examined and design rules established. Predictions of airgap force density are presented as a function of electric loading and compared with toothed rotor equivalents. It is shown that much greater force densities are theoretically possible with the segmental design. The authors then proceed to apply the concepts developed to a three-phase configuration, which shows particular advantages. Measured test results from a three-phase machine are presented and compared with a conventional switched reluctance motor of the same dimensions, revealing both the advantages and disadvantages of the segmental rotor configuration

Keywords

reluctance motors; rotors; airgap force density; design rules; electric loading; force densities; magnetic design; segmental rotor configuration; segmental rotors; single-phase machines; switched reluctance motors; three-phase configuration; three-phase machine; toothed rotor equivalents;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20020345

Filename

1022430