Power and Frequency Control of Induction Furnace Using Fuzzy Logic Controller

This paper introduces a new method to control resonance frequency and output power of induction heating coil. Induction heating coil can be controlled by single phase sinusoidal pulse width modulation (SPWM) inverter .All electrical requirements beside magnetic permeability and resistivity variation for modeling induction heating coil have been considered to make simulations practical .Control blocks using Fuzzy logic which control both active and reactive power have been designed .The system modeling and Fuzzy logic controllers are simulated in MATLAB/SIMULINK and FUZZY LOGIC toolbox .The results of the simulations show the effectiveness and superiority of this control system.