Abstract—This paper is concerned with the design of the power control system for a single-phase voltage source inverter feeding a parallel resonant induction heating load. The control of the inverter output current, meaning the active component of the current through the induction coil when the control frequency is equal or slightly exceeds the resonant frequency, is achieved by a Proportional-Integral-Derivative controller tuned in accordance with the Modulus Optimum criterion in Kessler variant. The response of the current loop for different work pipes and set currents has been tested by simulation under the Matlab-Simulink environment and illustrates a very good behavior of the control system.

Index Terms—induction heating, resonant voltage inverter, power control, controller tuning, Modulus Optimum criterion

Cite: Mihaela Popescu and Alexandru Bitoleanu, "Power Control System Design in Induction Heating with Resonant Voltage Inverter," Jounal of Automation and Control Engineering, Vol. 2, No. 2, pp. 195-198 June, 2014. doi: 10.12720/joace.2.2.195-198