公开(公告)号：US10088506B2

公开(公告)日：2018-10-02

申请号：US14440271

申请日：2013-10-03

Applicant: ABB Research Ltd.

Inventor： Pedro Rodriguez ,  Cajetan Pinto ,  Maciej Orman ,  Michal Orkisz ,  Ulf Ahrend ,  Rolf Disselnkötter ,  Pawel Rzeszucinski ,  James Ottewill

IPC: G01R23/00 ,  G01R19/02 ,  G01R31/34

Abstract: A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.

公开(公告)号：US20150276823A1

公开(公告)日：2015-10-01

申请号：US14440271

申请日：2013-10-03

Applicant: ABB RESEARCH LTD

Inventor： Pedro Rodriguez ,  Cajetan Pinto ,  Maciej Orman ,  Michal Orkisz ,  Ulf Ahrend ,  Rolf Disselnkötter ,  Pawel Rzeszucinski ,  James Ottewill

IPC: G01R19/02 ,  G01R31/34 ,  G01R23/00

CPC classification number: G01R19/02 ,  G01R23/00 ,  G01R31/34 ,  G01R31/343 ,  G01R31/346

Abstract: A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.

Abstract translation: 公开了一种用于识别至少定子或转子具有平行绕组分支的电机中的故障状况的方法。 进行测量，以获得两个平行绕组分支之间的一组循环电流值，其中每个绕组分支包括单个线圈。 对该组循环电流值进行频率分析以获得至少一个频率分量。 基于至少一个频率分量来确定电机的故障状况。

公开(公告)号：US09255837B2

公开(公告)日：2016-02-09

申请号：US14142407

申请日：2013-12-27

Applicant: ABB Research Ltd.

Inventor： Pedro Rodriguez

IPC: G01H17/00 ,  G01H1/00

CPC classification number: G01H17/00 ,  G01H1/003 ,  G01H1/006

Abstract: For identifying a fault in an electrical machine vibration is measured in a plurality of radial directions of the stator. On the basis of the vibration measurements a vibration frequency and a mode shape of the vibration at this frequency is determined. Characteristics of the vibration in terms of both the vibration frequency and the mode shape are used to identify a fault condition of the electrical machine.

Abstract translation: 为了识别电机中的故障，在定子的多个径向方向上测量振动。 基于振动测量，确定该频率下的振动频率和振动模式形状。 振动频率和振型的振动特性用于识别电机的故障状态。