公开(公告)号：US20160356854A1

公开(公告)日：2016-12-08

申请号：US15157644

申请日：2016-05-18

Applicant: ABB Technology Ltd

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

IPC: G01R31/34

CPC classification number: G01R31/34 ,  G01M5/0066 ,  G01M13/028 ,  G01M13/045

Abstract: A method for determining an undesired condition in an electrical drive system including an electrical machine and an electrical drive, wherein the method includes a) obtaining a measured signal of an electrical or mechanical parameter, b) obtaining a frequency spectrum of the measured signal, that 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, e) repeating steps a) to d), wherein in case the counter reaches a predetermined number determining that the electrical drive system is subjected to the undesired condition associated with the trend line.

Abstract translation: 一种用于确定包括电机和电驱动器的电驱动系统中的不期望状况的方法，其中所述方法包括：a）获得电或机械参数的测量信号，b）获得测量信号的频谱， 包含测量的频率分量，c）确定测量的频率分量是否在距趋势线的预定距离内，哪个趋势线仅与在特定不需要的状况期间存在的电或机械参数的一个特定频率分量相关联，d） 在所述测量的频率分量在与所述趋势线增加与所述趋势线相关联的计数器的预定距离内的条件下，e）重复步骤a）至d），其中在所述计数器达到预定数量的情况下，确定所述电驱动 系统遭受与趋势线相关联的不期望的状况。