基于LVRT改造的变频器直流母线端子接出方法

A Extraction Technique Based on LVRT Technology Reform for DC Bus Connection of Transducer

变频器直流母线端子的接出对低电压穿越(LVRT)改造起着至关重要的作用。本文介绍和分析通用交—直—交电压型变频器的工作原理和端子的名称及对应功能,总结变频器直流母线端子的连接特点;提出变频器直流母线端子的接出方法,并在多个火电厂的低电压穿越改造中成功应用,起到深刻的理论指导意义。

Extraction DC bus connection of transducer is very important for low voltage ride through （LVRT） technology reform. In this paper, working principle of general AC-DC-AC voltage transducer and the name, the function of connection is introduced and analyzed, extraction characteristics of DC bus connection of transducer is summarized, a extraction technique for DC bus connection of transducer is proposed. This technique is successfully applied in the low voltage ride through （LVRT）technology reform. This technique plays a profound theoretical guiding significance.