Sprawność elektryczna nagrzewnicy indukcyjnej użytej w procesie wyżarzania taśm miedzianych

One of the main area in application of induction heating technologies is a process of heat treatment like for instance annealing or hardening. A key parameter influenced on effectiveness of induction heater seems to be an electrical efficiency of inductor-workpiece system. Mathematical modeling of induction heating of thin copper strips used for their annealing was presented in the paper. For numerical analysis of coupled electromagnetic and temperature fields professional software supplemented by single-owned procedure was used. Obtained electrical efficiency for different parameters of inductor-workpiece system and properties of heated material was compared. Results of computer simulation were compared with measurements done on laboratory stands.