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2013-10-24

Experimental Model for Study of Electromagnetic Phenomena in Stator Core-End Laminations of Large Generators

By Gilles Vogt, Cristian Demian, Raphael Romary, Guillaume Parent, and Valentin Costan
Progress In Electromagnetics Research B, Vol. 56, 89-107, 2013
doi:10.2528/PIERB13082103

Abstract

This paper describes an experimental model for the characterization of electromagnetic phenomena that occur in the end regions of large turbo-generators. The study is based on a test bench that contains a stack of steel laminations from a 900 MW turbogenerator stator and two exciting circuits in order to combine a transverse magnetic flux with the in-plane flux. In order to explain the flux penetration within the magnetic sheet stack, accurate experimental measurements are performed. Results are compared with the finite element simulations using code_Carmel3D. In the same time, theoretical and experimental results are analyzed with a view to examining the influence of transverse flux on additional losses.

Citation


Gilles Vogt, Cristian Demian, Raphael Romary, Guillaume Parent, and Valentin Costan, "Experimental Model for Study of Electromagnetic Phenomena in Stator Core-End Laminations of Large Generators," Progress In Electromagnetics Research B, Vol. 56, 89-107, 2013.
doi:10.2528/PIERB13082103
http://www.jpier.org/PIERB/pier.php?paper=13082103

References


    1. Tavner, P. J. and A. F. Anderson, "Core faults in large generators," IEE Proceedings --- Electric Power Applications, Vol. 152, No. 6, 1427-1439, 2005.
    doi:10.1049/ip-epa:20050102

    2. Drzymala, P., K. Komeza, H. Welfle, S. Wiak, D. Kardas, and S. Sieradzki, "Field analysis of end regions of stator windings of large turbogenerators," ISEF 2009 --- XIV International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, 2009.

    3. Lin, R., A. Haavisto, and A. Arkkio, "Analysis of Eddy-current loss in end shield and frame of a large induction machine," IEEE Transactions on Magnetics, Vol. 46, No. 3, 942-948, 2010.
    doi:10.1109/TMAG.2009.2031173

    4. Yamazaki, K., S. Tada, H. Mogi, Y. Mishima, C. Kaido, S. Kanao, K. Takahashi, K. Ide, K. Hattori, and A. Nakahara, "Eddy current analysis considering lamination for stator core ends of turbin generators," IEEE Transactions on Magnetics, Vol. 44, No. 6, 1502-1505, 2008.
    doi:10.1109/TMAG.2007.916246

    5. Fujita, M., T. Tokumasu, H. Yoda, H. Tsuda, K. Ito, and S. Nagano, "Magnetic field analysis of stator core end region of large turbogenerators," IEEE Transactions on Magnetics, Vol. 36, No. 4, 1850-1853, 2000.
    doi:10.1109/20.877805

    6. Mecrow, B., A. Jack, and C. Cross, "Electromagnetic design of turbogenerator stator end regions," IEE Proceedings C --- Generation, Transmission and Distribution, Vol. 136, No. 6, 361-372, 1989.
    doi:10.1049/ip-c.1989.0050

    7. Jackson, R., "Interlamination voltages in large turbogenerators," Proceedings of the Institution of Electrical Engineers, Vol. 125, No. 11, 1232-1238, 1978.
    doi:10.1049/piee.1978.0261

    8. Lee, S. B., G. Kliman, M. Shah, W. Mall, N. Nair, and R. Lusted, "An advanced technique for detecting inter-laminar stator core faults in large electric machines," IEEE Transactions on Industry Applications, Vol. 41, No. 5, 1185-1193, 2005.
    doi:10.1109/TIA.2005.853383

    9. Singleton, R., P. Marshall, and J. Steel, "Axial magnetic flux in synchronous machines: The effect of operating conditions," IEEE Transactions on Power Apparatus and Systems, Vol. 100, No. 3, 1226-1233, 1981.
    doi:10.1109/TPAS.1981.316594

    10. Hilliar, R., R. Jackson, D. Ward, and R. Bennett, "Measurements of the currents flowing in the stator frame of a 500MW turbogenerator," IEE Proceedings C --- Generation, Transmission and Distribution,, Vol. 133, No. 1, 16-25, 1986.
    doi:10.1049/ip-c.1986.0003

    11. Platt, R., L. Kerr, and A. Anderson, "Measuring flux and interlaminar voltage in turbine generator end regions," IEE EMDA Conf., Vol. 213, 201-205, 1982.

    12. Karapetoff, V., "The Magnetic Circuit --- Electromagnetic Engineering," Watchmaker Publishing, 2003.

    13. Geuzaine, C. and J.-F. Remacle, "GMSH: A 3-D finite element mesh generator with built-in pre- and post-processing facilities," International Journal for Numerical Methods in Engineering, Vol. 79, No. 11, 1309-1331, 2009.
    doi:http://doi.wiley.com/10.1002/nme.2579