  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.
