Effect of toothless stator design and core and stator conductors eddy current losses in permanent magnet generators

Author

Arkadan, A.A. ; Vyas, R. ; Vaidya, J.G. ; Shah, M.J.

Author_Institution

Electr. & Comput. Eng., Marquette Univ., Milwaukee, WI, USA

Volume

7

Issue

1

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

231

Lastpage

237

Abstract

Some advantages of toothless stator design in high-speed permanent magnet generators are presented. A computer-aided method was implemented to study the effect of stator teeth on the eddy current loss in the stator conductors as well as the core loss in the laminations of high-speed permanent magnet generators. The computer-aided method was applied to a 75 kVA, 208 V, 400 Hz, two-pole, permanent magnet generator. A validation of the computed flux density values based on experimentally obtained data is given. Two particular designs, a toothless stator and a conventional stator (with iron teeth), are considered. The conductor eddy current loss and the laminations´ core losses are estimated and compared for both designs. The results of a study on the effect of conductor size on the stator conductor eddy current loss are given

Keywords

eddy current losses; electric generators; electric machine analysis computing; laminations; permanent magnet machines; rotors; stators; 208 V; 400 Hz; 75 kVA; computer-aided method; conventional stator; core conductors; core loss; eddy current losses; flux density; iron teeth; laminations; permanent magnet generators; stator conductors; toothless stator design; two-pole generator; Conductors; Core loss; Eddy currents; Hydroelectric power generation; Lamination; Permanent magnets; Solar power generation; Stator cores; Teeth; Wind energy generation;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.124565

Filename

124565