变频器缺相故障检测及相序自适应方法  

Phase-Loss Detection and Phase-Sequence Adaption Method of Frequency Converter

作　　者：王达开[1] 常越[1] 王娇娇 杨一睿 张颖聪 WANG Dakai;CHANG Yue;WANG Jiaojiao;YANG Yirui;ZHANG Yingcong(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University, Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电机与控制应用》2018年第8期110-115,123,共7页Electric machines & control application

摘　　要：讨论了四象限变频器的缺相故障快速检测及相序自适应的方法。通过基于双广义二阶积分的软件锁相环,分别对三相电压正序和负序进行锁相,获得三相电压在两种相序下的幅值。对三相电压各种情况所对应的正序、负序分量进行分析,结合锁相环计算出的正序或负序分量的幅值,分辨出三相电压是否过低或缺相及相序情况。经过MATLAB/Simulink仿真验证,15 ms内即可对缺相故障及相序做出准确分辨,证明所述方法切实可行。The method to detect phase-loss and phase-sequence of quadrant frequency converter was focused on.Lock the phase and obtain the amplitudes of positive and negative phase-sequence separately using dual second order generalized integrator PLL(DSOGI-PLL).Analyze all possible three-phase voltage of grid and compute the corresponding positive and negative amplitudes,combined with calculation of DSOGI-PLL in real system,predict the phase-sequence and faults happened to power supply.Simulation based on MATLAB/Simulink and experiment in real system showed that the method could make accurate judgment to faults and sequence of grid within 15 ms.

关 键 词：缺相检测 相序自适应 四象限变频器 

分 类 号：TN77[电子电信—电路与系统]