Design of A Class-E Direct AC-AC converter with only one capacitor and one inductor for domestic induction cooker

Abstract

Induction heating system is the most important component in domestic induction cooker. The system is usually required a full-bridge rectifier and a resonant inverter to generate medium-frequency power source to the induction coil. In order to simplify and reduce the operating procedure, we propose a design of the system by using a Class-E direct AC-AC converter with only one capacitor and one inductor. The design principle is based on the zero-voltage derivative switching (ZVDS) of the Class-E inverter with a parallel network. Thus, this study provides a more systematic scheme to design a Class-E direct AC-AC converter for domestic induction cooker than the conventional methodology. The results from our design are then compared with experimental results from a 1, 300 W prototype operated at 220 V and 50 Hz.