Numerical Modeling of Induction Heating Process Control

Modern induction heating technology (IHT) aims to regulate the heat generation inside the billet to obtain the target temperature at the desired location and time. This study presents a mathematical and numerical model that describes what occurs on the surface of the workpiece during induction heating (IH), simulating the events on the surface and the temperature change inside the workpiece. The analysis used different heating control techniques to achieve the target temperature using the COMSOL Multiphysics 6.0 software. I have developed three different algorithms to analyze the temperature distribution from the surface to the core: explicit and implicit event control algorithms and discrete frequency control aligned to the coil current. This article also covered the two vital electromagnetic properties, electrical conductivity and magnetic permeability, which significantly impact the performance of the IH system and its efficiency.