Energetic performances of an induction heating system with half-controlled rectifier destined for drying of current transformers

The paper presents the energetic performances of a system used for drying of current transformer from 110 kV Ciungetu power station. In fact, the drying process is based on an induction heating system that contains a half-controlled rectifier and a voltage source inverter that operates with resonant load. Two frequencies are taken into consideration for the inverter control. The former is the resonance frequency of the equivalent load and the latter is the frequency that determines the zero current switching of the inverter's IGBTs.