Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Parameter Estimation of a Power Transformer Using the Least Square Method

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  • Kang, Y.C. (Chonbuk National University, NPT Center) ;
  • Jin, E.S. (Chonbuk National University, NPT Center) ;
  • Won, S.H. (Chonbuk National University, NPT Center) ;
  • Kim, G.G. (Chonbuk National University, NPT Center) ;
  • Yang, H.K. (Chonbuk National University, NPT Center)
  • 강용철 (전북대학교, 차세대전력술연구센터) ;
  • 김은숙 (전북대학교, 차세대전력술연구센터) ;
  • 원성호 (전북대학교, 차세대전력술연구센터) ;
  • 김건군 (전북대학교, 차세대전력술연구센터) ;
  • 양한국 (전북대학교, 차세대전력술연구센터)
  • Published : 2003.07.21
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Abstract

This paper proposes a parameter estimation technique of a power transformer. Based on the combined equation, it estimates separately the primary and secondary leakage inductances using the least square method from the instantaneous voltages and currents in the steady state. The performance of the proposed technique was investigated by varying the cut-off frequency of the filter and the number of samples per cycle. The estimated values are obtained based on the average value for 41 cycles.

Keywords