Share

Proposal of rectifier type superconducting fault current limiter with non-inductive reactor (SFCL).

Author(s) : MOHAMMAD SALIM K., MUTA I., HOSHINO T., et al.

Type of article: Article

Summary

The concept behind the SFCL is the appearance of high impedance during non-superconducting state of the coil. In a hybrid bridge circuit, two superconducting coils connected in anti-parallel: a trigger coil and a limiting coil. Both the coils are magnetically coupled with each other and have the same number of turns. There is almost zero flux inside the core and therefore the total inductance is small during normal operation. At fault time when the trigger coil current reaches to a certain level, the trigger coil changes from the superconducting state to the normal one. This super-to-normal transition of the trigger coil changes the current ratio of the coils and therefore the flux inside the reactor is no longer zero. So, the equivalent impedance of both the coils increased thus limits the fault current.

Details

  • Original title: Proposal of rectifier type superconducting fault current limiter with non-inductive reactor (SFCL).
  • Record ID : 2005-0030
  • Languages: English
  • Source: Cryogenics - vol. 44 - n. 3
  • Publication date: 2004/03

Links


See other articles in this issue (1)
See the source

Indexing