摘要
为了检测三电平有源中点箝位(ANPC)变流器开路故障,通过对该拓扑在不同调制方式下每个开关器件开路时的故障表现进行了分析,提出了一种基于瞬时功率的故障判断与定位方法,仿真和实验结果表明该故障检测方法不仅能够准确检测三电平ANPC变流器在不同调制方式下的开路故障,并且可以检测并定位多个器件同时发生开路故障的情况,同时该方法能够在1个基波周期内检测出开路故障,提高了三电平ANPC变流器开路故障检测的准确性和快速性,对变流器的安全可靠运行提供了重要的保障。
In order to diagnose faults of open switch circuit for a three-level active neutral point clamped converter, the performances of every devices in the topology with different modulations are analyzed, and a judging and locating method is proposed based on instantaneous power. Simulation and experiment results show that the presented method can not only accurately detect faults of the open switch circuit for converter under different modulations, but also judge and locate the open faults which occur in multi devices at the same time. The diagnose time can be limited in one fundamental period. The precision and speed of the judgement method are improved. It can provide the important safeguards for three-level active neutral point clamped converter.
作者
张波
葛琼璇
王晓新
李耀华
ZHANG Bo;GE Qiongxuan;WANG Xiaoxin;LI Yaohua(Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, ChineseAcademy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2017年第12期4070-4078,共9页
High Voltage Engineering
基金
国家重点研发计划(2016YFB1200602-20)~~
关键词
高压电器
有源中点箝位
开路故障检测
三电平
瞬时功率
脉宽调制
high voltage electrical apparatus
active neutral point clamped
switch open circuit fault diagnosis
three level
instantaneous power
pulse width modulation
