Analysis and Design of a Kind of Improved Parallel Resonant Converters

Chenhu Yuan, Jianru Wan, Xiuyan Li, Hong Shen, Yingpei Liu, Guangye Li

School of Electrical Engineering and Automation of Tianjin University, Tianjin, China.
School of Information and Communication of Tianjin Polytechnic University, Tianjin, China.

DOI: 10.4236/jemaa.2009.11011                

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%.

Keywords

Power Converters, Parallel Resonant, Voltage-Doubler Rectifier, High-Voltage Power Supply

Conflicts of Interest

The authors declare no conflicts of interest.

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