Design and Application of Fuzzy Logic Controlled Induction Heating System
AbstractInduction heating has many advantages over the conventional heating systems. Therefore, it is used in many applications from cooking in the kitchen to surface hardening in the industry. In this study, an induction heating system is designed to dry a metal pipe passed through the painting process. The half-bridge inverter is used at the power stage of the system and the power switches are turned on under ZVS conditions. FLC is preferred to perform the closed-loop power control and the switching frequency of the inverter is selected as the control variable. The temperature of the pipe used as feedback to set up the inputs of the FLC is set to the reference value of 50 °C. A low-cost DSPIC microcontroller is used to operate the FLC, digitize the feedback, and generate gate signals for the switches.