The Analysis and Design of High-power Intrinsic Safe Forward Converter Based on Power-i Technology

2019 The 5th International Conference on Electrical Engineering, Control and Robotics

无线电电子学;计算机科学

Shulin, Liu^1 ; Hao, Wu^1 ; Yuxi, Zhang^1 ; Chuanyi, Hu^1 ; Jizhi, Yan^1

College of Electrical and Control Engineering, Xi'An University of Science and Technology, Xi'an, China^1

关键词: Circuit structures;    Explosion protection;    Forward converters;    High power output;    Intrinsic safety;    Intrinsically safe;    Protection circuits;    Switching power supplies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/533/1/012015/pdf
DOI  :  10.1088/1757-899X/533/1/012015

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The existing anti explosion measures and the intrinsic safety evaluation methods have become the bottleneck factors that restrict the further improvement of the output power of the native security. Therefore, This article is based on the latest anti explosion standard, the principle of realizing high power output by Power-i technology to suppress the spark discharge energy of switching power supply is analyzed, as well as the composition of the power supply system and its evaluation method. The forward converter is selected as the topology of the high-power local security power supply, according to the technical index of Power-i system, the circuit structure of high power intrinsic safe converter is put forward, and the double protection circuit of overcurrent, overvoltage and short circuit when the output is short circuited and open fault is designed. It has been tested that the output 24V/2A high power intrinsically safe positive converter based on Power-i standard can meet the requirements of explosion protection under type I environment. The experimental results verify the intrinsic safety of the designed high power intrinsic positive shock converter, and reflect the correctness of the theoretical analysis and design method.