Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Determination of Transformer Inductances using Instantaneous Magnetic Saturation Curve

순시치 자기포화 곡선에 의한 변압기 인덕턴스 산정

  • Hyun, Yong-Tak (Faculty of Electrical and Electronic Engineering, Cheju National University) ;
  • Jwa, Chong-Keun (Faculty of Electrical and Electronic Engineering, Cheju National University)
  • 현용탁 (제주대학교 전기전자공학부) ;
  • 좌종근 (제주대학교 전기전자공학부)
  • Published : 2001.10.26
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Abstract

The saturated winding inductances of a transformer are determined using the instantaneous magnetic saturation curve. The instantaneous curve is obtained from no load saturation curve in rms form by a direct piecewise linearized approach, then it is represented by a four-term ploynominal approximation. The saturated differential, effective and apparent winding inductances are computed from this curve, and these inductances are compared with the measured magnetizing inductance. The results show that the relation of $L_d<L_e<L_a$ exists and the computed apparent inductance is more close to the measured inductance.

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