公开(公告)号：EP3104152A1

公开(公告)日：2016-12-14

申请号：EP15170998.7

申请日：2015-06-08

申请人： ABB Technology Ltd

发明人： Peretti, Luca ,  Pathmanathan, Mehanathan ,  Ikram Ul Haq, Omer ,  Sahoo, Subrat

IPC分类号： G01M13/02 ,  G01M13/04 ,  G01M5/00

CPC分类号： G01R31/34 ,  G01M5/0066 ,  G01M13/028 ,  G01M13/045

摘要： The present disclosure relates to a method for determining an undesired condition in an electrical drive system comprising an electrical machine and an electrical drive, wherein the method comprises a) obtaining a measured signal of an electrical or mechanical parameter concerning the electrical drive system, b) obtaining a frequency spectrum of the measured signal, which frequency spectrum contains a measured frequency component, c) determining whether the measured frequency component is within a predetermined distance from a trend line, which trend line is associated with only one specific frequency component of the electrical or mechanical parameter present during a specific undesired condition,, d) on the condition that the measured frequency component is within the predetermined distance from the trend line increasing a counter associated with the trend line, g) repeating steps a) to d), wherein in case the counter reaches a predetermined number within a predetermined number of iterations of steps a) to d), and f) determining based on that the counter reaches the predetermined number that the electrical drive system is subjected to the undesired condition associated with the trend line.

摘要翻译： 本公开涉及用于在电驱动系统，其包括在电驱动电机和不希望的状况确定性采矿的方法，worin该方法包括a）获得的电的或机械的参数关于电驱动系统的测量的信号，b）中 获得所测量的信号，其频谱包含测量频率分量的频谱，c）中确定的采矿无论所测量的频率分量是从哪个趋势线与电的仅一个特定的频率分量相关联的趋势线的预定距离内 或特定的不希望的状态期间存在机械参数,, d）关于病情未见所测量的频率分量从趋势线增大与趋势线，克相关联的计数器的预定距离内）重复步骤a）至d），worin 在情况下，计数器达到它的预定数目内的预定数 基于计数器的步骤a）至d），和f）确定的操作采矿确实达到预定数量做了电驱动系统受到与趋势线相关联的不期望的状态。