高电压技术2018，Vol.44Issue(6)：1774-1781,8.DOI:10.13336/j.1003-6520.hve.20180529007
基于启动电流的电流互感器取能电源优化分析及实验验证
Optimization Analysis and Experiment Verification of Current Transformer Power Supply Based on Starting Current
娄杰 1陈常涛2
作者信息
- 1. 山东大学电气工程学院,济南 250061
- 2. 国网日照供电公司,日照 276800
- 折叠
摘要
Abstract
In order to improve the efficiency of current transformer power supply in the vicinity of starting current and to reduce the dead zone, we derived a relationship among the output power, filter capacitor voltage, and turns. Then, taking the minimum output power 0.5 W as the target, we simulated the influence of filter capacitor voltage and turns on output power in the vicinity of starting current. It is concluded that the maximum power is independent of turns when the voltage drop of rectifier is not considered. However, due to the voltage drop of real rectifier, the curve of maximum power and turns has saturation characteristic, and the turns are determined according to it. It is obtained that the stable operating point is the point of higher filter capacitor voltage by analyzing the stability of the operating point on the output power curve of current transformer. The phenomenon that the power supply may not be able to output normal power in the vicinity of starting current is analyzed, and the solution of controlling the starting of DC-DC circuit is given. A circuit is designed, and the correctness of the analysis is verified by experiments.关键词
TA取能电源/启动电流/功率输出特性/二次侧匝数/饱和特性Key words
TA power supply/starting current/power output characteristic/turns of secondary side/saturation characteristic引用本文复制引用
娄杰,陈常涛..基于启动电流的电流互感器取能电源优化分析及实验验证[J].高电压技术,2018,44(6):1774-1781,8.
