Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Current Limiting Characteristics of Flux-lock Type SFCL according to Inductance Variation

  • Choi Hyo-Sang (Department of Electrical Engineering, Chosun University) ;
  • Park Hyoung-Min (Department of Electrical Engineering, Chosun University) ;
  • Cho Yong-Sun (Department of Electrical Engineering, Chosun University)
  • Published : 2006.04.01
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Abstract

We investigated the current limiting characteristics of flux-lock type superconducting fault current limiter(SFCL) according to inductance variation of coil 2. The flux-lock type SFCL consists of two coils. The primary coil is wound in parallel to the secondary coil through an iron core, and the secondary coil is connected to the superconducting element in series. The operation of the flux-lock type SFCL can be divided into the subtractive and the additive polarity winding operations according to the winding directions between the coil 1 and coil 2. The current limiting characteristics in two winding directions were dependent of on the ratio of the number of turns of coil I and coil 2. The fault current increased when the number of turns of coil 2 increased in the subtractive polarity winding. On the contrary, the fault current decreased under the same conditions in case of the additive polarity winding.

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References

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