Rotor topologies for a switched-reluctance machine for the ´more-electric´ aircraft engine

Author

Powell, D.J. ; Jewell, G.W. ; Howe, D. ; Atallah, K.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK

Volume

150

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

311

Lastpage

318

Abstract

The merits of alternative rotor topologies for a switched reluctance machine that is to be embedded within the high-pressure region of a civil aircraft engine are discussed. The constraints imposed by conventional rotor designs due to the limited mechanical strength of the laminations are highlighted by finite element analysis of the stress distribution. A modular rotor structure is proposed which facilitates a significant reduction in the mechanical stress in rotor laminations, and thereby an increase in the diameters. Both two- and three-dimensional finite element analyses are employed to compare the electromagnetic performance of a switched reluctance machine with a modular rotor against two machines having conventional rotors.

Keywords

aerospace engines; aerospace simulation; aircraft; finite element analysis; machine theory; mechanical strength; reluctance machines; rotors; civil aircraft engine; electromagnetic performance; finite element analysis; laminations mechanical strength; mechanical stress reduction; modular rotor structure; more-electric aircraft engine; rotor topologies; stress distribution; switched-reluctance machine;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20030121

Filename

1199694