A New Inductor for Transverse Flux Induction Heating

A transverse flux induction heating (TFIH) device with an unique induction structure is presented in this paper. The development procedure started with the theoretical analysis of the relationship between eddy current distribution and coil geometry. Then, with the help of the analysis results, new coil geometry was designed in order to get an uniform temperature distribution on the strip surface at the inductor outlet. The non-linear coupled electromagnetic-thermal problem in TFIH was analyzed by FEM taking into account the interaction between the inductor and power supply source, where the resulted load parameters and power supply parameters are used in a dynamic system model describing the whole induction process. Finally, a prototype was developed according to the numerical results. Test results agree with the numerical evaluations. Both numerical analysis and experimental results show that the new coil geometry can result in an uniform temperature distribution.