Interbar current analysis of induction motors using 3-D finite-element method considering lamination of rotor core

Author

Yamazaki, Katsumi ; Watanabe, Yuta

Author_Institution

Dept. of Electr. Eng., Chiba Inst. of Technol.

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1287

Lastpage

1290

Abstract

The losses and efficiency of induction motors are analyzed considering the interbar currents, which flow from the rotor bars into the rotor core. The three-dimensional (3-D) finite-element method with the modeling of the laminated rotor core is applied in order to take the skin effect and the magnetic saturation of the core into account. The calculated losses and efficiency are compared with the measurement. The measured and calculated results agree well. It is clarified that both the rotor core and rotor cage losses increase due to the interbar currents and that the main components of these losses are caused by the stator slot harmonics

Keywords

finite element analysis; induction motors; laminations; magnetic cores; rotors; skin effect; 3D finite-element method; induction motors; interbar current analysis; laminated rotor core; rotor bars; skin effect; stator slot harmonics; Bars; Finite element methods; Induction motors; Lamination; Magnetic analysis; Magnetic cores; Rotors; Saturation magnetization; Skin effect; Stator cores; Combined three-dimensional (3-D)-two-dimensional (2-D) analysis; induction motor; interbar current; lamination;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871423

Filename

1608449