Investigation of Frequency Effects on the Performance of Single-Sided Linear Induction Motor
Keywords:
Back-iron saturation, efficiency, input frequency, normal force, output thrust, power factorAbstract
Single-sided linear induction motors (SLIMs) have been widely used in industry, especially in high-speed transportation systems. The performance of the SLIMs is considerably affected by the characteristics of its secondary back-iron. The conductivity of the iron used as well as its magnetic permeability influence the performance of the machine, while the magnetic permeability itself is affected by the input frequency of the SLIM. In this paper, using Dancan equivalent circuit model and considering all phenomena involved in the single-sided linear induction motor, the outputs of the motor such as efficiency, power factor, normal force and output thrust are analytically derived. Then, the effects of the input frequency on depth of the field penetration and saturation level of the secondary backiron as well as the SLIM outputs are analyzed. To confirm the analytical results, 2D time-stepping finite element method is employed. The results are in good agreement with each other confirming the analytical analysis.
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References
S. Nonaka and T. Higuchi, “Elements of Linear Induction Motor Design for Urban Transit”, IEEE Trans. Magn., vol. 23, no. 5, pp. 3002-3004 , 1989.
S. Yoon, J. Hur, and D. Hyun, “A Method of Optimal Design of Single-Sided Linear Induction Motor for Transit”, IEEE Trans. Magn., vol. 33, no. 5, pp. 4215-4217, 1997.
S. Osawa, M. Wada, M. Karita, D. Ebihara, and T. Yokoi, “Light-Weight Type Linear Induction Motor and Its Characteristics”, IEEE Trans. Magn., vol. 28, no. 4, pp. 3003-3005, 1992.
M. Kitamura, N. Hino, H. Nihei, and M. Ito, “A Direct Search Shape Optimization Based on Complex Expressions of 2-Dimentional Magnetic Fields and Forces”, IEEE Trans. Magn., vol. 34, no. 5, pp. 2845-2848, 1998.
A. H. Isfahani, H. Lesani, and B. M. Ebrahimi, “Design Optimization of Linear Induction Motor for Improved Efficiency and Power Factor”, IEEE Int. Conf. on Electric Machines Drives, IEMDC, pp. 988-991, 2007.
A. H. Isfahani, B. M. Ebrahimi, and H. Lesani, “Design Optimization of a Low-Speed SingleSided Linear Induction Motor for Improved Efficiency and Power Factor”, IEEE Trans. Magn., vol. 44, no. 2, pp. 266-272, 2008.
C. Lucas, Z. Nasiri, G. and F. Tootoonchian, “Application of an Imperialist Competitive Algorithm to Design of Linear Induction Motor”, Energy Conversion and Management, vol. 51, pp. 1407-1411, 2010.
D. H. Im, S. C. Park, and J. W. Im, “Design of Single-Sided Linear Induction Motor using the Finite Element Method and SUMT”, IEEE Trans. Magn., vol. 29, no. 2, pp. 1762-1766, 1993.
J. Duncan, “Linear Induction Motor-Equivalent Circuit Model”, IEE Proc. Electric Power Appl., vol. 130, no. 1, pp. 51-57, 1983.
W. Xu, J. G. Zhu, Y. Zhang, Y. Li, Y. Wang, and Y. Guo, “An Improved Equivalent Circuit Model of a Single-Sided Linear Induction Motor”, IEEE Trans. Vehicular Tech., vol. 59, no. 5, pp. 2277- 2289, 2010.
W. Xu, J. G. Zhu, Y. Zhang, Z. Li, Y. Li, Y. Wang, Y. Guo, and W. Li, “Equivalent Circuits For Single-Sided Linear Induction Motors”, IEEE Trans. Ind. Appl., vol. 46, no. 6, pp. 2410-2423, 2010.
S. G. Lee, H. Lee, S. Ham, C. Jin, H. Park, and J. Lee, “Influence of the Construction of Secondary Reaction Plate on the Transverse Edge Effect in Linear Induction Motor”, IEEE Trans. Magn., vol. 45, no. 6, pp. 2815-2818, 2009.
A. Z. Bazghaleh, M. R. Naghashan, and M. R. Meshkatoddini, “Optimum Design of Single-Sided Linear Induction Motors for Improved Motor Performance”, IEEE Trans. Magn., vol. 46, no. 11, pp. 3939–3947, 2010.
A. Z. Bazghaleh, M. R. Naghashan, M. R. Meshkatoddini, and H. Mahmoudimanesh, “Optimum Design of High Speed Single-Sided Linear Induction Motor to Obtain Best Performance”, IEEE Conf. Power Electronics & Electrical Drive, Automation & Motion, SPEEDAM, pp. 1222-1226, 2010.
A. Z. Bazghaleh, M. R. Naghashan, M. R. Meshkatoddini, and H. Mahmoudimanesh, “Optimum Design of High Speed Single-Sided Linear Induction Motor using Particle Swarm Optimization”, IEEE Conf. Power Electronics & Drive Systems & Technologies, PEDSTC, pp. 329- 334, 2010.
J. F. Gieras, G. E. Dawson, A. R. Easthan, “A New Longitudinal End Effect Factor for Linear Induction Motor”, IEEE Trans. Energy Convers., vol. 2, no. 1, pp. 152-159, 1987.
R. C. Creppe, J. A. C. Ulson and J. F. Rodrigues, “Influence of Design Parameters on Linear Induction Motor End Effect”, IEEE Trans. Energy Convers., vol. 23, no. 2, pp. 358-362, 2008.
J. Lu and W. Ma., “Research on End Effect of Linear Induction Machine For High-Speed Industrial Transportation”, IEEE Trans. Plasma Sci., vol. 39, no. 1, pp. 116-120, 2011.
T. Yang, L. Zhou, and L. Li, “Influence of Design Parameters on end Effect in Long Primary DoubleSided Linear Induction Motor”, IEEE Trans Plasma Sci., vol. 39, no. 1, pp. 192-197, 2011.
I. Boldea and S. A. Nasar, Linear motion electromagnetic devices, Taylor & Francis, New York, 2001.
S. A. Nasar and I. Boldea, Linear electric motors, Prentice-Hall, New Jersey, 1987.
M. Mirsalim, A. Doroudi, and J. S. Moghani, “Obtaining the Operating Characteristics of Linear Induction Motors: A New Approach”, IEEE Trans. Magn., vol. 38, no. 2, pp. 1365-1370, 2002.
E. R. Laithwaite, Induction machines for special purposes, George Newnes Limited, London 1996.
R. M. Pai, I. Boldea, and S. A. Nasar, “A Complete Equivalent Circuit of a Linear Induction Motor with Sheet Secondary”, IEEE Trans. Magn., vol. 24, no. 1, 1988.
J. F. Gieras, Linear Induction Drives, Oxford University Press, New York, 1994.
