Estimation of Energy Efficiency of the Frequency Converter Based on the Resonant Inverter with Pulse-Density Control

The analysis of dynamic and static losses of the resonant frequency converter, which forms the sinusoidal output voltage smoothing the high-frequency sinusoidal pulses with the LC-filter, is carried out. A comparative estimation of the power losses of the resonant frequency converter and the converter with power transistors hard switching is performed. During the converter power losses estimation the transistors’ losses, the static and dynamic losses on the diodes, which provide the continuous current through the output filter inductance, and the resonant circuit losses were considered.