Control of Magnetizing Inrush Current in a Transformer by Means of Thyristors

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Abstract

When a transformer is energized, the inrush of abnormally high magnetizing current may be noted for a short time until normal flux conditions are established. This may cause the failure of a protective relay, so many preventives are usually accepted for the purpose of normal relay performance. The authors, instead, now have tried to control the inrush current itself, by means of the soft starting method using two reverse parallel thyristors. In this paper, the method to control the inrush current itself, is presented by the soft-starting method using thyristors. The experimental results of this Method verifies the good controlability of the transient magnetic flux of a transformer and then the availability of the control of magnetizing inrush current in the cases of a single phase connection and a three phase one.

Journal

  • Memoirs of the School of Engineering, Okayama University

    Memoirs of the School of Engineering, Okayama University 10(2), 45-54, 1976-01-27

    岡山大学工学部

Codes

  • NII Article ID (NAID)
    120002307871
  • NII NACSIS-CAT ID (NCID)
    AA00733903
  • Text Lang
    ENG
  • Article Type
    departmental bulletin paper
  • ISSN
    0475-0071
  • Data Source
    IR 
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