Fault current limitation by a superconducting coil with a reversely magnetized core for a fault current controller

Min Cheol Ahn, Tae Kuk Ko

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents an experimental and numerical study on current limiting characteristics of a fault current controller (FCC). The FCC consists of an AC/DC power converter, a superconducting coil, and a control unit. Even though some previous researches proved that the FCC could adjust the fault current level, the current limiting characteristics by the superconducting coil should be investigated for design of the coil. In this paper, four kinds of model coils were tested; 1) air core, 2) iron core without any bias, 3) reversely magnetized core (RMC) using permanent magnets, and 4) RMC using an electromagnet. Based on a comparative study, it is confirmed that a RMC by an electromagnet (EM) could increase the effective inductance of the coil. In this paper, a numerical code to simulate the HTS coil with RMC was developed. This code can be applied to design the HTS coil with active reversely magnetized bias coil.

Original languageEnglish
Pages (from-to)36-40
Number of pages5
JournalJournal of the Korea Institute of Applied Superconductivity and Cryogenics
Volume14
Issue number4
DOIs
Publication statusPublished - 2012 Dec 1

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Electric fault currents
Controllers
Electromagnets
Rectifying circuits
Inductance
Permanent magnets
Iron
Superconducting coils
Air

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

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