Title :
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
fDate :
11/1/2000 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
