摘要
高压大容量变频调速系统在某些应用场合,常伴随有电源瞬间跌落或消失的工况。功率电源瞬间失电跨越,是高压大容量变频调速系统的必备功能之一。本文结合实际的高压大容量变频器的控制和保护系统设计,提出了一种新的失电跨越控制策略。文中详细分析了这种策略的原理,控制及保护逻辑,最后给出样机试验结果。
The voltage sag or instant power loss often happens in power supply system in medium voltage (MV) inverter's working environment. Frequent start MV inverter-motor system causes great harm to the normal production. As the most important function of MV inverters, a new control strategy of power loss ride through (PLRT) is investigated. Based on the brake of quickly reducing output frequency, the PLRT maintains the DC link voltage in a proper range. The principle, process and function design of PLRT are developed in this paper. The test results in a 55kW 3-level inverter show that this PLRT is an efficient and feasible key to the instant power loss.
出处
《电工电能新技术》
CSCD
北大核心
2006年第3期68-72,共5页
Advanced Technology of Electrical Engineering and Energy
作者简介
张海涛(1979-),男,天津籍,博士生,主要从事电力电子与电机集成系统的应用研究;
赵争鸣(1959-),男,湖南籍,教授/博导,博士,主要从事电力电子与电机集成系统的应用研究。