Electromagnetic Field Analysis on Asymmetrical Three Phase Transformer

Arief Budi Ksatria, I Made Yulistya Negara, Dimas Anton Asfani, I Gusti Ngurah Satriyadi Hernanda, Daniar Fahmi, Muhammad Sulthon Novera Rega

Abstract

This study deals with the effect of core lamination thickness on asymmetrical three-phase transformer to hysteresis curve. The asymmetrical three-phase transformer is a transformer that has different leg-length. The used transformer in this research has 5-kVA rating, and E-I core-cutting topology, and a larger leg size on center compared to the the side-legs of the transformer. Research on the effect of transformer core lamination thickness was done using finite-element method (FEM) to find out the magnetic field density (B) distribution and magnetic field intensity (H) at some points which the flux distribution flows. Variables of thicknesses used in the study were either intact or non-laminated-core transformer, 2.5 cm-laminated transformer core, and 0.03 cm-laminated transformer core. Each transformer has 39 monitor points to obtain the maximum value of B and H. Based on the simulation results, the highest magnetic field density value is in the transformer with 0.03 cm-laminated core, which is 2.174 Vs/m2 and the magnetic field density with the highest absolute average is in a transformer with a non-laminated-core, which is 1.837 Vs/m2. At the branching point of the core-cutting of the transformer with 0.03 cm-laminated transformer core have the highest magnetic field intensity value compared to the non-laminated-core transformer and 2.5 cm-laminated.

Full Text:

PDF

References

S. J. Chapman, Electric Machinery Fundamentals: Fourth Edition, 4th ed., Mc Graw – Hill Education, 2005.

P. S. Moses, M. A. S. Masoum, dan H. A. Toliyat, “Dynamic Modeling of Three-Phase Asymmetric Power Transformers With Magnetic Hysteresis: No-Load and Inrush Conditions,” IEEE Transactions on Energy Conversion, vol. 25, no. 4, pp. 1040–1047, Dec 2010.

J. A. Martinez dkk., “Modeling and Analysis Guidelines for Slow Transients—Part III: The Study of Ferroresonance,” IEEE TRANSACTIONS ON POWER DELIVERY, vol. 15, no. 1, pp. 11, 2000.

A. V. Radun, “Development of Dynamic Magnetic Circuit Models Including Iron Saturation and Losses,” IEEE Transactions on Magnetics, vol. 50, no. 5, pp. 1–10, May 2014.

K. Dezelak, M. Petrun, M. Roser, D. Dolinar, dan G. Stumberger, “The Impact of Iron Core Model on Dynamic Behavior of Three-Phase Power Transformer Dynamic Model,” IEEE Transactions on Magnetics, vol. 51, no. 1, pp. 1–4, Jan 2015.

S. E. Zirka, Y. I. Moroz, H. K. Hoidalen, A. Lotfi, N. Chiesa, dan C. M. Arturi, “Practical Experience in Using a Topological Model of a Core-Type Three-Phase Transformer—No-Load and Inrush Conditions,” IEEE Transactions on Power Delivery, vol. 32, no. 4, pp. 2081–2090, Aug 2017.

S. Ruangsinchaiwanich dan K. Khongseephai, “Investigation of transformer performance by the finite element method,” 2009, pp. 1–6.

A. B. Ksatria, I. M. Y. Negara, D. C. Riawan, D. A. Asfani, dan D. Fahmi, “Core-cutting topology effects of single phase 1-KVA transformer on inrush current,” 2017, pp. 144–147.

O. Touhami dan F. Aboura, “Integration of the hysteresis in models of asymmetric three-phase transformer: finite-element and dynamic electromagnetic models,” IET Electric Power Applications, vol. 10, no. 7, pp. 614–622, Aug 2016.

A. Rezaei-Zare, R. Iravani, dan M. Sanaye-Pasand, “Impacts of Transformer Core Hysteresis Formation on Stability Domain of Ferroresonance Modes,” IEEE Transactions on Power Delivery, vol. 24, no. 1, pp. 177–186, Jan 2009.

P. S. Moses, M. A. S. Masoum, dan M. Moghbel, “Effects of iron-core topology on inrush currents in three-phase multi-leg power transformers,” 2012, pp. 1–6.

M. Khelil dan M. Elleuch, “Modeling of the Air-Gaps of Overlapped Joints in Three-Phase Transformer Iron core for using by FEM,” 2009 6th International Multi-Conference on Systems, Signal, and Devices, 2009, pp. 1–6.

Refbacks

  • There are currently no refbacks.