A New Proposal of An Instantaneous Resonant Complex Current Vector Controlled High-Frequency Soft-Switching Inverter Topology for Induction Heating

—Operating Principle and High-Frequency Power Regulation—

Abstract

A novel high-frequency resonant inverter operating under a complete zero current soft transition mode is originally proposed in this letter, which can be continuously controlled by regulating phase difference angle between two resonant currents under the fixed switching frequency. Its operating principle and unique features are described herein by simulation analysis for high-frequency low resistivity induction heating of metal vessels. Furthermore, its output power regulation vs. phase-shifted angle characteristics are demonstrated under the condition of complete ZCS operation.