TITLE:
Analysis and Design of a Kind of Improved Parallel Resonant Converters
AUTHORS:
Chenhu Yuan, Jianru Wan, Xiuyan Li, Hong Shen, Yingpei Liu, Guangye Li
KEYWORDS:
Power Converters, Parallel Resonant, Voltage-Doubler Rectifier, High-Voltage Power Supply
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.1 No.1,
March
12,
2009
ABSTRACT: Traditional transformer in high-voltage power supplies has many disadvantages such as high turn’s ratio, large volume and great design difficulties. Parallel resonant converters (PRCs) are widely used in high-voltage power supplies. A kind of high-voltage circuit topology can be formed by combining PRCs and voltage-doubler rectifier, which is called parallel resonant dual voltage converters (PRDVCs). In PRDVCs both voltage-doubler rectifier and transformer can boost voltage, which reduced turn’s ratio and volume of the transformer, making it easier to produce. Thus it not only realizes the high-voltage output, but also realizes the miniaturization of high-voltage power supply. Three modes of the converters were researched and simulated. Converting conditions of three modes were given. At last, PRDVCs was used to design a 5000V/50mA high-voltage power supply. The waveforms and results of the experiment were given, which validated the feasibility of the converters and its conversion efficiency might be improved to 93%.