Zero Current-Soft Switched High-Frequency Resonant Inverter with Fixed Frequency Voltage Regulation Function and Its Performance Analysis

Abstract

This paper is mainly concerned with a switching device voltage-clamped type half-bridge topology of new instantaneous resonant current vector-regulated high-frequency inverter with phase-shifting control which efficiently operates at zero-current soft switching mode in order to minimize switching losses and electrical stresses of the switching device over a wide voltage regulation range.
This resonant inverter using two resonant switches and a resonant tank is more suitable for high-power induction-heating power supplies high-intensity ultrasonic generators and switched-mode DC-DC converters.
This ZCS high-frequency inverter for induction-heating load are analyzed introducing normalized resonant and load circuit parameters and control variable on the basis of the computer-aided simulation. The load and frequency regulation characteristics of the proposed inverter are illustrated with a normalized expression in addition to voltage and current peak values of the power semiconductor device. Its simulation results are illustrated as compared with the experimental results obtained from trially-produced breadboard.