Contents I. Introduction
Induction motors consume a large percentage of the electrical demands in industrialized countries. Owing to the environmental problems, it has become more important to estimate the losses and the efficiency of the motors.
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...Show MoreMetadata
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
Published in: IEEE Transactions on Magnetics ( Volume: 42, Issue: 4, April 2006)
References is not available for this document.
Select All
1.
A. Odok, "Stray load losses and stray torques in induction machines", Trans. AIEE, vol. 77, no. 4, pp. 43-53, 1958.
2.
D. G. Dorrell, T. J. E. Miller and C. B. Rasmussen, "Inter-bar currents in induction machines", IEEE Trans. Ind. Appl., vol. 39, no. 3, pp. 677-684, May/Jun. 2003.
3.
R. Carlson, C. A. Silva, N. Sadowski, Y. Lefevre and M. L. Lajoie, "Analysis of the effect of inter-bar currents on the performance of polyphase cage-induction motors", IEEE Trans. Ind. Appl., vol. 39, no. 6, pp. 1674-1680, Nov./Dec. 2003.
4.
K. Yamazaki, "Induction motor analysis considering both harmonics and end effects using combination of 2D and 3D finite element method", IEEE Trans. Energy Convers., vol. 14, no. 3, pp. 698-703, Sep. 1999.
5.
N. Nakata, N. Takahashi, K. Fujiwara and Y. Shiraki, "3-D magnetic field analysis using special elements", IEEE Trans. Magn., vol. 26, no. 5, pp. 2379-2381, Sep. 1990.
6.
H. Domeki, Y. Ishihara, C. Kaido, Y. Kawase, S. Kitamura, T. Shimomura, et al., "Investigaiton of benchmark model for estimating iron loss in rotating machine", IEEE Trans. Magn., vol. 40, no. 2, pp. 794-797, Mar. 2004.
