Power loss in electrical steel under elliptically rotating flux conditions

Author

Salz, Werner ; Hempel, Karl-August

Author_Institution

Inst. fur Werkstoffe der Electrotech., Aachen Univ. of Technol., Germany

Volume

32

Issue

2

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

567

Lastpage

571

Abstract

The power loss of electrical steel sheet given in the data sheets of the steel manufacturers is related to linearly alternating flux conditions, measured with an Epstein frame or a single sheet tester, respectively. In the application of the material in electrical machines, we find large areas with rotational flux conditions, i.e., in the T-joint region of three-phase power transformers or above the stator teeth of three-phase motors and generators. The most general description of the magnetization process in this case is an elliptically rotating flux. The paper outlines the magnetic behavior of steel sheet under these flux conditions, and finally defines a simple method to predict the total power loss under elliptically rotating flux from data measured under linearly alternating and circularly rotating flux conditions only

Keywords

ferromagnetic materials; iron alloys; losses; magnetic flux; magnetisation; silicon alloys; Fe-Si; T-joint; electrical machine; electrical steel sheet; elliptically rotating flux; magnetization; power loss; stator teeth; three-phase generator; three-phase motor; three-phase power transformer; Electric variables measurement; Loss measurement; Magnetic materials; Manufacturing; Power measurement; Power transformers; Sheet materials; Stators; Steel; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.486549

Filename

486549