整流器交流侧框架泄漏时的框架电流保护分析

Analysis of Frame Current Protection under Frame Current Leakage at AC Side of Rectifier

在介绍6脉波全波整流桥原理的基础上,分析了整流器交流侧发生框架泄漏故障时泄漏电流的波形及大小,并对框架泄漏保护装置的采集和处理能力进行了调研。经Matlab仿真及试验,得出框架泄漏保护电流元件能够实现直流设备交流侧框架泄漏故障保护的结论。

On the basis of introducing the principle of 6-pulse full wave rectifier bridge,this paper analyzes the waveform and magnitude of leakage current when the frame leakage fault occurs at AC side of rectifier,and investigates the collection and processing capacity of frame leakage protection device.Through Matlab simulation and test,it is concluded that the frame leakage protection current element can realize the AC side frame leakage fault protection of DC equipment.