有源逆变器的分析

THE ANALYSIS OF ACTIVE INVERTER

晶闸管组成的单相桥式变流器 ,既能实现整流 ,又能实现有源逆变。只要控制两组晶闸管通断 ,可将直流电转变为交流电 ,经过变压器反送给电网。但逆变后的交流电流是矩形波 ,它含有较大的谐波分量。

A single phase thyristor bridge converter can operate in a rectifier mode as well as in an active inverter mode.By means of controlling two group thyristors,D.C.power can be converted into A.C. power,then fed back to the utility grid via transformer.But the A.C.current wave is a rectangular wave including many harmonics.The typical application of active inverter is the D.C.motor invertible drive system.