Research on a type of power supply methods for active electronic current transformer

摘要

The method of power supply for high-voltage side circuit is the key problem for the research of active electronic current transformer. The power supply method of a special coil is especially studied in this paper. Firstly, the performance of the coil, which is made up by special material, is tested. And then, the relationship between coil turns and minimal start current could be achieved in accordance with the results of theoretical analysis and experimental data. At last, the parameters of the power supply circuit are carefully selected in order to provide the maxim output power, and some improving measures are introduced simultaneously.