Magnetic Shunts Geometry Effects on the Axial Forces and Leakage Flux in Power Transformers Based on FEM Method

K. Abbaszadeh(1*), S. Jamali Arand(2)

(1) Electrical Engineering Department of K.N. Toosi University of Technology, Tehran, Iran, Islamic Republic of
(2) Islamic Azad University, Branch of Dehdasht, Iran, Islamic Republic of
(*) Corresponding author


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


The influence of arrangement, dimensions, and magnetic permeability of the magnetic flux shunts on the flux distribution, leakage reactance as well as axial electromagnetic forces acting on the transformer yokes, is studied in this paper using finite elements method and a simple modeling. By using magneto-static analysis and finite element method, the flux distribution in the 2D model of a core-type three phase power transformer was calculated, and then the leakage reactance of the transformer windings is calculated using the magnetic stored energy method. By calculating the leakage reactance, the short circuit current amplitude and therefore the flux distribution in short circuit conditions and axial electromagnetic forces on the transformer windings were obtained. By studying the different models including magnetic flux shunts, the effect of the arrangement, geometric dimensions as well as the magnetic permeability of the magnetic flux shunt on the leakage reactance and the net axial forces acting on the transformer yokes were studied and some interesting results were obtained. It is shown that the variation of these parameters in the transformer model has the significant effect on the leakage reactance and net axial force acting upon the transformer yoke, for instant, for certain value of the magnetic shunt length, the net axial force acting upon yoke has its maximum value.
Copyright © 2014 Praise Worthy Prize - All rights reserved.

Keywords


Axial Forces; FEM; Leakage Reactance; Magnetic Shunts; Power Transformer

Full Text:

PDF


References


S. Jamali, M. Ardebili, K. Abbaszadeh, Calculation of Short Circuit Reactance and Electromagnetic Forces upon the Three Phase Transformer Coils Using FEM, ICEMS 2005, Proceedings of the 8th International Conference on Electrical Machines and Systems, 27-29 Sept.2005, pp. 1725-1730, Vol.3.
http://dx.doi.org/10.1109/icems.2005.202854

J.Wang, A.F.Witulski, J.L.Vollin, T.K.Phelps, G.I.Gardwell, Derivation, Calculation and Measurement of Parameters for a Multi–Winding Transformer Electrical Model, Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual Volume 1, 14-18 March 1999 Page(s):220 - 226 vol.1
http://dx.doi.org/10.1109/apec.1999.749513

J.E. Hayek, Short-Circuit Reactance of Multi-Secondaries Concentric Winding Transformers, Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International 2001 Page(s):462 - 465
http://dx.doi.org/10.1109/iemdc.2001.939345

D. Magot, X. Margueron, J.P. Keradec,PEEC-Like Analytical Calculation of Static Leakage Inductances of H.F Transformers, Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE Volume 1, 3-7 Oct. 2004.
http://dx.doi.org/10.1109/ias.2004.1348457

L. Longfu, W. Ziya, T. Tiaosheng, The Method Solving Short-Circuit Impedance between Two Interleave Windings in the Multi-Winding Core-Type Transformer with Finite Element Method, Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on Volume 1, 18-20 Aug. 2001 Page(s):254 - 256 vol.1
http://dx.doi.org/10.1109/icems.2001.970660

J. Smajic, V. Madzarevic, S, Berberevic, Numerical Calculation of Power Transformers Equivalent Circuit Parameters, Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on29 Aug.-2 Sept. 1999 Page(s):96
http://dx.doi.org/10.1109/ptc.1999.826527

G. Alonso, J. Antonio, A New Method for Calculating of Leakage Reactance and Iron Losses in Transformers, Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on Volume 1, 18-20 Aug. 2001 Page(s):178 - 181 vol.1.
http://dx.doi.org/10.1109/icems.2001.970638

S. Salon, B. Lamattina, K. Sivasbramaniam, Comparison of Assumptions of Short Circuit Forces in Transformers, IEEE Transaction on magnetics, vol.36, No.5, pp.3521-3523, September 2000.
http://dx.doi.org/10.1109/20.908881

P. Zhou, W.N. Fu, D. Lin, S. Stanton, Z.J. Cendes, L. Xu, Numerical Modeling of Electrical Machines and Its Application, Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the Volume 3, 13-18 Oct. 2002 Page(s):1936 - 1942 vol.3.
http://dx.doi.org/10.1109/ias.2002.1043798

V.K. Lakhiani, Transformers (McGraw-Hill Publishing Company, 1987).

Martin J. Heathcote, J&P Transformer (Reed Educational and Professional publishing Ltd, 1998).


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2021 Praise Worthy Prize