Semester of Graduation

Spring 2018


Master of Science in Electrical Engineering (MSEE)


Electrical and Computer Engineering

Document Type



During the operation of ultra-high-power ac arc furnace the negative effects of unbalance mostly occur in the secondary terminals of the transformer connected to the load. Hence balancing and compensating the furnace at this terminal will not only improve the transformer efficiency but also reduce energy losses that do occur. In this thesis a computer modeling of a reference ac arc furnace in both balanced and unbalanced states were simulated, and the effects of a reactive balancing compensator installed on the secondary side of the furnace transformer was evaluated to see how much delivered energy improvement can be obtained. The balancing compensator used is synthesized using the Currents’ Physical Components (CPC) based power theory, which is also used to evaluate our obtained results. The results obtained provide a platform for developing an adaptive balancing compensator for ac arc furnace operating in uneasy mode, with thyristor switched inductors used for compensator susceptances control.



Committee Chair

Leszek, Czarnecki