CONTROL ANALYSIS OF A HIGH FREQUENCY RESONANT INVERTER FOR INDUCTION COOKING APPLICATION

C. P. Roy

Abstract: Stability of three possible close-loop control of a series resonant inverter is studied for induction cooking application. Ultimately, a single close-loop control technique is proposed in this work which can ensure both the power control as well as a satisfactory zero voltage switching (ZVS) in a finite control range near the operating point. A phase shift controlled series resonant inverter is used as a power supply for an induction cooking system. Its linearized model is developed for small signal analysis and a PID controller is designed for the proposed close-loop control and its performances are judged under various operating conditions using MATLAB/Simulink® platform

Keywords: ZVS, linearization, bode plot, step response, PID control

DOI: https://doi.org/10.15623/ijret.2015.0403058