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Original Articles

Field Distribution and Performance Analysis of a Passive Magnetic Fault-current Limiter under Transient Conditions

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Pages 1195-1207 | Received 07 Oct 2008, Accepted 20 Apr 2009, Published online: 19 Oct 2009
 

Abstract

A magnetic fault-current limiter is a passive device consisting of a permanent magnet and saturable magnetic cores. It offers low inductance to the circuit under a normal operating condition and places a high inductance under a faulted condition. The current suppression capability of a steel core is higher than that of a ferrite-core fault-current limiter having the same dimension and topology. This article aims to investigate the transient performance of a fault-current limiter with steel and ferrite cores. Finite element analysis is used to observe the flux and mmf distribution inside the fault-current limiter under normal and faulted conditions.

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