公开(公告)号：US20160266208A1

公开(公告)日：2016-09-15

申请号：US15050718

申请日：2016-02-23

Applicant: ROLLS-ROYCE plc

Inventor： Subash Chandar ATHIKESSAVAN ,  Sivakumar NADARAJAN ,  Amit Kumar GUPTA ,  Sanjib Kumar PANDA ,  Chandana Jayampathi GAJANAYAKE

IPC: G01R31/34

CPC classification number: G01R31/346 ,  H02P29/0241

Abstract: A method of detecting rotor and/or stator side faults in an induction motor. Signals indicative of three-phase stator currents of the induction motor are acquired (10) and converted (16) into three-phase current phasors. The three-phase current phasors are combined (16) to obtain a quantity having a DC component and an AC component. A frequency spectrum of the AC component is obtained (18) and compared (20,22) to a frequency spectrum of the AC component under healthy operating conditions in order to determine the presence of a rotor and/or stator side fault in the induction motor

Abstract translation: 检测感应电动机中转子和/或定子侧故障的方法。 获取表示感应电动机的三相定子电流的信号（10）并将其转换为三相电流相量。 组合三相电流相量（16）以获得具有DC分量和AC分量的量。 获得交流分量的频谱（18）并比较（20,22）到健康运行条件下交流分量的频谱，以便确定感应电机中转子和/或定子侧故障的存在