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The model DC circuit breaker composed of an insulated gate bipolar transistor has been constructed. Consideration was given to the current-limiting process, i.e., to establish a method for limiting the direct current to zero. This method was achieved by decreasing gate-emitter voltage with a passage of time at a certain time-constant tge. The breaking experiment of the rush-current interruption of...
Superconducting fault-current limiters (SFCLs) are expected to be useful for preventing increases in the fault currents caused by the expansion of power systems with dispersed generators. In this study, we focus on resistance-type SFCLs with YBCO superconducting thin films fabricated by the metal-organic deposition (MOD) method and propose a computational approach to calculate the resistance generated...
The authors describe a method for calculating equivalent circuit constants of synchronous generators using open and shorted operational impedances obtained by the DC decay tests. In the proposed method, it is possible to find all constants only by a stationary test, including the armature leakage reactance. This method makes it possible to improve transient analysis accuracy on not only the armature...
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