The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

Temperature Characteristics Analysis of Hybrid Transformer

하이브리드 몰드 변압기의 온도 특성 해석

  • Received : 2013.03.14
  • Accepted : 2013.06.25
  • Published : 2013.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, the temperature distribution of 400kVA hybrid transformer is predicted by using CFD analysis. The copper loss and iron loss which are heat source are calculated by using Joule heat and Bertotti's equation respectively. To improve the convergence of the numerical calculation and to reduce the computation time, the 1/4 model is used and the incompressible air model is used for external air. To verify analysis result, the temperature rise test and no-load test of the transformer are performed. The experiment result obtained by using thermo-graphic camera is similar to the numerical result of the CFD analysis.

Keywords

References

  1. A. A. Mohmoud, R. D. Shaltz, "A method for analyse harmonic distribution in a.c power systems," IEEE Trans., PAS-101, pp. 151-161, Aug. 1982.
  2. Turan Gonen, "Electric Power Distribution System Engineering," CRC Press, 2008.
  3. H. Y. Park, "A study on Power Transformer by Zig-Zag Windings with Reduction of Harmonics and Phase Imbalance," Master thesis, Soongsil Univ. Dec 2010.
  4. A. Moses and G. Shirkoohi, "Iron loss in nonoriented electrical steels under distorted flux conditions," IEEE Transactions on Magnetics, vol. 23, no. 5, pp. 3217-3220, 1987. https://doi.org/10.1109/TMAG.1987.1065248
  5. Giorgio Bertotti, "General Properties of Power Losses in Soft Ferromagnetic Materials," IEEE Transactions on Magnetics, vol. 24, no. 1,1988.
  6. Jiyuan Tu, "Computational Fluid Dynamics," ISBN 978-0-7506-8563-4 Butterworth-Heinemann, 2008.
  7. Linden W. Pierce, "Predicting Hottest Spot Temperatures in Ventilated Dry Type Transformer Windings," IEEE Trans. Power Delivery, Vol. 9, No. 2, pp. 1160-1169, 1994. https://doi.org/10.1109/61.296303
  8. J. M.Weiss, J. P. Maruszewski, and W. A. Smith, "Implicit Solution of the Navier-Stokes Equations on Unstructured Meshes," Technical Report AIAA-97-2103, 13th AIAA CFD Conference, Snowmass, CO. July 1997.