一种基于磁阻芯片的电流互感器闭环式设计

Closed-loop Design of Current Transformer Based on Magnetic Reluctance Chip

介绍一种闭环电流互感器。该互感器是一种基于磁阻芯片传感电流的电子线路补偿式电流互感器。与传统互感器不同,该互感器采用闭环反馈传感机理。分析该互感器的工作原理、工作过程以及系统性能。通过与开环式互感器的理论对比分析并结合测试过程的具体实验数据,论述了闭环电流互感器的优越性。测试表明:这种采用闭环形式的电流互感器较开环形式的电流互感器精度高,抗干扰能力强,稳定性好,在性能上有很大的改善。

This paper introduces a closed-loop current transformer which is an electronic circuit compensating current transformer with current sensing based on magnetic reluctance chip. Different from traditional transformer, this transformer uses closed loop feedback sensing mechanism. This paper analyzes the working principle, working process and system performance of this transformer and discusses the supe- riority of closed-loop current transformer through theoretical contrastive analysis on open loop transformer in combination with the specific experimental data in the test process. The test shows that closed-loop cur- rent transformer has a high precision, strong capacity of resisting disturbance, good stability and improved performance compared to open loop current transformer.