Three-dimensional resistance calculation in end ring of induction motor by finite-element method

Author

Kim, Do-Wan ; Jung, Hyun-Kyo ; Hahn, Song-Yop ; Lee, Cheol-Gyun

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

36

Issue

6

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

3932

Lastpage

3938

Abstract

Among the components of induction motors, the end ring is needed to connect rotor bars electrically. Some approaches to calculating its resistance employ equivalent circuit methods, but they are not accurate because they assume ideal sinusoidal current distribution. This paper presents a method to calculate the current distribution in the end ring by the finite-element method (FEM). This paper uses both two-dimensional (2-D) A-Φ FEM analysis and three-dimensional (3-D) T-Ω FEM analysis. The magnetic flux density is obtained from 2-D analysis, and the electric vector potential is obtained from 3-D analysis. With these results, the current distribution in the end ring is calculated and the proper size of the end ring is selected by solving some case problems

Keywords

current distribution; finite element analysis; induction motors; machine theory; magnetic flux; rotors; stators; FEM; current distribution; electric vector potential; end ring; finite-element method; induction motors; magnetic flux density; rotor bar connection; three-dimensional T-Ω FEM analysis; three-dimensional resistance calculation; two-dimensional A-Φ FEM analysis; Bars; Current distribution; Electric resistance; Equivalent circuits; Finite element methods; Induction motors; Magnetic analysis; Magnetic flux density; Rotors; Two dimensional displays;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.914342

Filename

914342