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Reduction of Electromagnetic Force in AC Distributed Winding of Fault Current Limiter under Short-Circuit Condition
Various kinds of winding arrangements can be used to enable fault current limiters (FCL) to tolerate higher forces without resulting in a substantial increase in construction and fabrication costs. In this paper, a distributed winding arrangement is investigated in terms of its effects on the short-circuit forces in a threephase FCL. The force magnitudes of the AC supplied windings are calculated by employing a finite elementbased model in the time stepping procedure. The leakage flux and radial and axial force magnitudes obtained from the simulation are compared to those obtained from a conventional winding arrangement. The comparison shows that the distributed winding arrangement significantly reduces the radial and, especially, the axial force magnitudes.