Analysis of effects of magnetic slot wedges on characteristics of large induction motor

• Autorzy: Dems M. , Komęza K. , Sykulski J. K.

Warianty tytułu

PL

Analiza wpływu klinów magnetycznych na charakterystykę pracy wielkich silników indukcyjnych

• Języki publikacji: EN

Abstrakty

EN

Magnetic slot wedges are often used to improve starting performance of large induction motors. In this paper we have investigated – through simulation – the effects of the wedges on the performance characteristics of the motor and core losses under no load condition. Both analytical and hybrid two-dimensional field-circuit models have been used. In order to reliably establish the parameters of the end connections of the rotor cage, whose values significantly influence the results of simulation, a three-dimensional model was developed, also useful for verification purposes at standstill. The simulation has demonstrated the effects of the wedges on the starting performance but revealed little influence on the core losses.

PL

W artykule przedstawiono wpływ zastosowania klinów magnetycznych na charakterystyki eksploatacyjne i straty w rdzeniu silników indukcyjnych dużej mocy w warunkach obciążenia. Obliczenia zostały wykonane z wykorzystaniem hybrydowego modelu obwodowo-polowego 2D oraz metodami analitycznymi. Wyniki obliczeń porównano z wynikami pomiarów.

Słowa kluczowe

EN

induction motor; magnetic slot wedges; finite element method; analytical modelling

PL

silnik indukcyjny; klin magnetyczny; metoda elementów skończonych; modelowanie obwodowe

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2012
• Tom: R. 88, nr 7b
• Strony: 73--77
• Opis fizyczny: Bibliogr. 14 poz., schem., tab., wykr.

Twórcy

autor

Dems M.

autor

Komęza K.

autor

Sykulski J. K.

• Technical University of Lodz, Institute of Mechatronics and Information Systems, ul. Stefanowskiego 18/22 90-924 Lodz, Poland,

Bibliografia

• [1] Anazawa Y., Kaga A., Akagami H., Watabe S. and Makino M., “Prevention of harmonic torques in squirrel cage induction motors by means of soft ferrite magnetic wedges”, IEEE Trans. on Magnetics, Vol. 18, No. 6, 1982, pp.1550-1552
• [2] Dabrowski M., “Design of AC electrical machines”, WNT Warszawa, 1988, p. 479 (in Polish)
• [3] Davey K.R., “Transient performance and loss analysis in solid wound rotor pulsed power generators”, IEEE Transactions on Magnetics, Vol. 42, No. 2, 2006, pp. 335 - 340
• [4] Hanna R.A., Hiscock W. and Klinowski P., “Failure Analysis of Three Slow-Speed Induction Motors for Reciprocating Load Application”, IEEE Transactions on Industry Applications, Vol. 43, No. 2, 2007, pp. 429 - 435
• [5] Harjun Z., Jingjun Z. and Ruizhen G., “Using magnetic slot wedge to improve the air-magnetic field of brushless direct currentmotor”, Journal of North China Electric Power University, Vol. 34, No. 3, 2007, pp. 17–21
• [6] Henk de Swardt, “Electric motor failure prevention: wedge failures”, Energizer the Journal of the Institution of Certified Mechanical and Electrical Engineers and the Journal of South African Institute of Electrical Technician Engineer, Nov. 2003
• [7] Ikeda M. and Hiyama, T., “Simulation studies of the transients of squirrel-cage induction motors”, IEEE Trans. Energy Convers., Vol. 22, No. 2, 2007, pp. 233–239
• [8] Kaga A., Anazawa Y. and Akagami H., “The efficiency improvement of capacitor motor with ferrite magnetic wedges”, IEEE Trans. on Magnetics, Vol. 22, No. 5, 1986, pp. 964–966
• [9] Mikami H., Ide K., Arai K., Takahashi M. and Kajiwara, K., “Dynamic harmonic field analysis of a cage type induction motor when magnetic slot wedges are applied”, IEEE Trans. Energy Convers., Vol. 12, No. 4, 1997, pp. 337–343
• [10] Scollay and Stewart, “The Real Cost of Magnetic Wedges in Improved Performance of Induction Motors”, CWIEME 2007 -Berlin, Germany
• [11] Shuping W., Zhengming Z., Liqiang Y. and Buyao W., “Investigation and analysis of the influence of magnetic wedges on high voltage motors performance”, IEEE Vehicle Power and Propulsion Conference, VPPC '08, 2008, pp.1 - 6
• [12] Takeda Y., Yagisawa T., Suyama A. and Yamamoto M., “Application of magnetic wedges to large motors”, IEEE Trans. on Magnetics, Vol. 20, No. 5, 1984, pp. 1780–1782
• [13] Watanabe M., Ide K., Takahashi M. and Takahashi N., “Magnetically anisotropic slot wedges for rotating machines”, IEEE Trans. on Magnetics, Vol. 26, No. 2, 1990, pp. 407–410
• [14] Xinzhen W. and Xiangheng W., “Parameter calculation for induction machine rotor bar with non-sinusoidal current”, Proceedings of the Eighth International Conference on Electrical Machines and Systems, Vol. 1, 2005, pp. 60–63