Experimental study on induction heating generation for plastic deformation

Abstract

The resistance heating system, or band heater, was usually used for deformation in the plastic recycling process and works on the principle of Joule heating: an electric current through a resistor converts electrical energy into heat energy. However, the main problem with resistance heating is heat conduction because some heat is lost in the transference from the wire to the body. According to this problem, induction heating was designed into the process because electromagnetic induction can directly produce heat in the object. This study provides a simple temperature control for a low-cost, high-efficiency, and high-power factor based on the Class-E DC-AC resonant inverter that was applied for operating under the zero-voltage switching (ZVS) condition to test the plastic deformation efficiency. The inverter was used to test the efficiency of the plastic deformation. The medium-frequency induction heating that has been proposed is designed to operate at a frequency ranging from 10 to 100 kHz, a line rms voltage of 220 V, a line frequency of 50 Hz, and an output power of 600 W. The experiment's results provide verification that supports the viability of the proposed induction heating method.