公开(公告)号：US20240310244A1

公开(公告)日：2024-09-19

申请号：US18604643

申请日：2024-03-14

Applicant: ABB Schweiz AG

Inventor： Ravi Naidu K ,  Maciej Orman ,  Prasad Mulay

IPC: G01M13/04

CPC classification number: G01M13/04

Abstract: A system and method for determining condition of a sleeve bearing in a rotating machine include one or more magnetic sensors and a processor. The one or more magnetic sensors are adapted to be mounted on at least a body of a rotating machine or proximate to a sleeve bearing thereof. The processor is electrically and communicatively coupled to the one or more magnetic sensors and configured to receive magnetic flux measurement from the one or more magnetic sensors. The magnetic flux measurement is made in at least one of: proximate to the sleeve bearing or body of the rotating machine. The processor is configured to determine the condition of sleeve bearing based on the magnetic flux measurement.

公开(公告)号：US10184986B2

公开(公告)日：2019-01-22

申请号：US15196858

申请日：2016-06-29

Applicant: ABB Schweiz AG

Inventor： Cajetan Pinto ,  Maciej Orman ,  Prasad Mulay

IPC: G01R31/34 ,  G01R29/08 ,  G01R33/04 ,  G01R33/10

Abstract: It is proposed a system for condition monitoring electric machine and the method thereof. The system includes a portable unit, being adapted for free movement around said electric machine; a magnetic field sensor, being adapted for measuring magnetic field intensity at at least one of a plurality points of a path of said free movement; a processing unit, being adapted for receiving at least one corresponding magnetic field intensity signal from said magnetic field sensor, comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine; wherein: said magnetic field sensor and said processing unit are integrated into said portable unit. And the method includes steps of moving said portable unit to at least one point of a plurality points of a path of said free movement around said electric machine; measuring at least one magnetic field intensity at said at least one of a plurality points of a path of said free movement; and comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine.

公开(公告)号：US10353004B2

公开(公告)日：2019-07-16

申请号：US15310782

申请日：2015-03-24

Applicant: ABB Schweiz AG

Inventor： Prasad Mulay ,  Maciej Orman ,  Karthik Krishnamoorthi ,  Cajetan Pinto ,  Pawel Rzeszucinski

IPC: G01R31/34 ,  G01R29/08 ,  G01R33/04 ,  G01R33/10

Abstract: In aspects, the present invention discloses a method of detecting a rotor fault in an electric machine using a data analysis unit. The method comprises measuring magnetic field strength along a first axis and a second axis, determining operating slip frequency of the electric machine using the measured magnetic field strength along the first axis and the second axis, determining an amplitude of the determined operating slip frequency in a first frequency spectrum and an amplitude of operating slip frequency in a second frequency spectrum, and detecting the rotor fault by comparing the amplitude of the determined operating slip frequency in the first frequency spectrum and the amplitude of operating slip frequency in the second frequency spectrum against a predetermined threshold.

公开(公告)号：US20160306012A1

公开(公告)日：2016-10-20

申请号：US15196858

申请日：2016-06-29

Applicant: ABB Schweiz AG

Inventor： Cajetan Pinto ,  Maciej Orman ,  Prasad Mulay

IPC: G01R31/34 ,  G01R33/04

CPC classification number: G01R31/343 ,  G01R29/0814 ,  G01R33/04 ,  G01R33/10

Abstract: It is proposed a system for condition monitoring electric machine and the method thereof. The system includes a portable unit, being adapted for free movement around said electric machine; a magnetic field sensor, being adapted for measuring magnetic field intensity at at least one of a plurality points of a path of said free movement; a processing unit, being adapted for receiving at least one corresponding magnetic field intensity signal from said magnetic field sensor, comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine; wherein: said magnetic field sensor and said processing unit are integrated into said portable unit. And the method includes steps of moving said portable unit to at least one point of a plurality points of a path of said free movement around said electric machine; measuring at least one magnetic field intensity at said at least one of a plurality points of a path of said free movement; and comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine.

Abstract translation: 提出了一种状态监测电机系统及其方法。 该系统包括便携式单元，适于围绕所述电机自由移动; 磁场传感器，适于测量所述自由运动的路径中的至少一个点处的磁场强度; 处理单元，适于从所述磁场传感器接收至少一个对应的磁场强度信号，将至少一个磁场强度值与至少一个对应的预期值进行比较，并且基于所述比较确定故障是否为 存在于电机中; 其中：所述磁场传感器和所述处理单元被集成到所述便携式单元中。 并且该方法包括以下步骤：将所述便携式单元移动到围绕所述电机的所述自由运动的路径的多个点的至少一个点; 在所述自由运动的路径的所述至少一个点处测量至少一个磁场强度; 以及将至少一个磁场强度值与至少一个对应的预期值进行比较，以及基于所述比较来确定电机中是否存在故障。