A Novel High-Voltage Half-Bridge Converter with Phase-Shifted Active Rectifier

The half-bridge converter with phase-shifted active rectifier allows us to avoid drawbacks of the traditional hard-switched half-bridge converter with a diode rectifier, such as high semiconductor losses and parasitic oscillations in the inverter. This paper introduces a novel improved control algorithm for a full-bridge phase-shifted active rectifier, allowing reduction of the energy circulation during its operation. The advantages of the algorithm are verified with a small-scale converter prototype. The experimental results were found in full accordance with expected waveforms.