Induction Heating of the Large-Size Installations. Part 2. Study of the Power Supply Parameters

The paper is concerned with numerical study of parameters of the magnetic system for induction heating of the large-size installations. The paper is included in a papers series concerning development of the installation for maintaining the specified pressing tool temperature for a long time period, more than 24 hours. Induction heating is the basic heating mechanism. Studies of the inductor parameters depending on the power frequency are presented in this section of the paper. Study of the power supply parameters is the objective of the paper. The studies were performed using numerical modeling in a three-dimensional formulation by the finite element method. The study of the frequency influence of the inductor supply on the coils resistance and the power factor in the range of 0 - 60 kHz has been carried out. Numerical results have shown that increasing the frequency leads to a linear increase in the resistance of the coils and a decrease in the power factor.