Loss Analysis and Optimization Design of Parallel Resonant Dual Voltage Converters

PRCs combined with voltage-doubler rectifier can form a kind of high-voltage circuit topology, which are parallel resonant dual voltage converters (PRDVCs). Both voltage-doubler rectifier and transformer can boost voltage, which reduced turn´s ratios and volume of the transformer, making it easier to produce. Thus it realized the miniaturization of high-voltage power supply. Output and control characteristic curves were given. Loss mechanism of PRDVCs was researched. By using optimization method the optimized working point was acquired. Conversion efficiency of different working points was tested and the validity of loss analysis and optimization design was proved.