Flux distributions in three-phase induction motor with disconnection problem

Author

Enokizono, Masato ; Todaka, Takashi ; Serikawa, Ichiro

Author_Institution

Dept. of Electr. & Electron. Eng., Oita Univ., Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3165

Lastpage

3167

Abstract

The characteristics of a three-phase induction motor with a disconnection problem are measured by using a practical 0.5-kW three-phase, four-pole model in which the stator connection can be selected arbitrarily. The change of the load characteristics and of the flux distribution for differences in the stator connection is clarified quantitatively to obtain the necessary information in the diagnosis of the disconnection problem. Under the normal condition of three kinds of star connection, the distortion factors of the flux waveforms are under 2.5%. In the case of disconnection, these values are increased in almost all search coils. When the connection is series-circuit construction, the malfunctioning point can be related to the change of the maximum flux density of the distortion factor

Keywords

induction motors; magnetic flux; stators; 0.5 kW; disconnection problem; distortion factors; flux distribution; flux waveforms; four-pole model; load characteristics; maximum flux density; star connection; stator connection; three-phase induction motor; AC motors; Circuits; Coils; Distortion measurement; Induction motors; Rotors; Shape; Stator cores; Stator windings; Teeth;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281124

Filename

281124