On Load Single Phase Solid State Tap Changer Mohammad H. Taha Electrical and Computer Engineering Department, Rafik Hariri University, Lebanon

 On Load Single Phase Solid State Tap Changer Mohammad H. Taha Electrical and Computer Engineering Department, Rafik Hariri University, Lebanon 

Abstract-In electric energy transmission and distribution system, voltage control is an essential part to maintain proper voltage limit at the consumer’s terminal. On-load tap-changers are indispensable in regulating power transformers used in electrical energy networks and industrial applications. General switching principles and application for the On-load tap-changers are discussed and presented. A single phase Tap-Changer using a GTO with antiparallel thyristor to perform switching of one upward or downward transition is described in this paper. The logic of operation, simulation and experimental results for resistive, inductive loads are presented. 

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