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公开(公告)号：US10184986B2
公开(公告)日：2019-01-22
申请号：US15196858
申请日：2016-06-29
申请人： ABB Schweiz AG
发明人： Cajetan Pinto , Maciej Orman , Prasad Mulay
摘要： 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.
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公开(公告)号：US10319156B2
公开(公告)日：2019-06-11
申请号：US15350039
申请日：2016-11-12
申请人： ABB Schweiz AG
发明人： Amandine Heqing Sun , Maciej Orman , Cajetan Pinto
摘要： In aspects, the present invention discloses a method of detecting a condition of an electric machine using a portable diagnostic device comprising one or more sensors for measuring at least one physical parameter associated with the electric machine in at least two axes. The method comprises measuring the at least one physical parameter associated with electric machine at a first position in a first axis and a second axis, determining a ratio of a first measurement of the at least one physical parameter in the first axis and a second measurement of the at least one physical parameter in the second axis at the first position, identifying a spatial distribution associated with the condition of the electric machine from a database based on the determined ratio and identifying the condition of the electric machine based on the identified spatial distribution.
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公开(公告)号：US11513155B2
公开(公告)日：2022-11-29
申请号：US15963480
申请日：2018-04-26
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Subrat Sahoo , Cajetan Pinto
IPC分类号： G01R31/34 , H02P29/024
摘要： A method and device of determining a fault condition in a synchronous motor including a rotor provided with damper bars and an end ring to which the damper bars are mechanically connected thereby forming a damper cage, wherein the method includes: obtaining a first measurement of an end ring current from a first location along the end ring, processing the first measurement to thereby obtain a processing result, and determining whether a fault condition is present in the synchronous motor based on the processing result.
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公开(公告)号：US11342819B2
公开(公告)日：2022-05-24
申请号：US15762459
申请日：2016-10-04
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Subrat Sahoo , Cajetan Pinto , Klaus Vänskä
摘要： A method for preventing a frequency component of a voltage from occurring in an electrical machine including the steps of: obtaining, either by measuring a voltage signal or a current signal from the electrical machine in time domain and transforming the measured signal into frequency domain, by simulating or deducing a first frequency component present in the electrical machine in absence of a grounding, the first frequency component representing a first undesired frequency higher than a limit frequency of 500 Hz; and providing the electrical machine with a first grounding at a grounding location, the first grounding including a resonant circuit resonating at the first undesired frequency. In order to get rid of harmful shaft voltages in the form of sharp voltage peaks at high frequencies, it is first necessary to determine at which undesired frequency or frequencies these voltage peaks occur. Only thereafter can a low impedance grounding be provided that works satisfactorily at the undesired frequency or frequencies.
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公开(公告)号：US20180188187A1
公开(公告)日：2018-07-05
申请号：US15859435
申请日：2017-12-30
申请人： ABB Schweiz AG
IPC分类号： G01N21/954 , G02B23/24 , H04N5/225 , G06T7/00
CPC分类号： G01N21/954 , G01N2021/9546 , G01N2201/0216 , G01N2201/0621 , G01N2201/0853 , G02B23/2461 , G02B23/2484 , G02B23/26 , G06T7/0004 , G06T2207/30164 , H04N5/2256 , H04N2005/2255
摘要： An inspection system for inspecting an internal component of a machine includes a remote controlled vehicle constructed to fit inside a desired portion of the machine; a controller operative to control an operation of the remote controlled vehicle; a tether coupled to the controller and to the remote controlled vehicle, wherein the tether is operative to transmit control signals from the controller to the remote controlled vehicle; and an imaging device extending from a front portion of the remote controlled vehicle and operative to view the internal component. The imaging device has a flexible articulating tip spaced apart from the front portion of the body.
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公开(公告)号：US11448701B2
公开(公告)日：2022-09-20
申请号：US16772770
申请日：2018-12-07
申请人： ABB Schweiz AG
发明人： Pallavi Hujband , Maciej Orman , Cajetan Pinto
摘要： The present disclosure discloses a Condition Monitoring Device (CDM), configured to monitor power consumption and loading of motor. The CDM receives value of a measured current in a stator of the motor, and measures at least one of a magnetic flux around the motor and vibrations in the motor. The magnetic flux, the vibrations and the current in the stator are measured within a predefined time window. The CDM calculates various parameters of the motor and estimates a value of current using the measurements and rated parameters stored in the CDM. The estimated parameter of current is compared with the measured value of current. A value of rotor speed (one of the rated parameters) is varied until the value of the estimated current is approximately equal to the value of the measured current. The value of current is considered to monitor power consumption and loading of the motor.
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公开(公告)号：US09977085B2
公开(公告)日：2018-05-22
申请号：US15507110
申请日：2015-09-08
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Subrat Sahoo , Cajetan Pinto
CPC分类号： G01R31/346 , G01R31/343 , H02P9/10 , H02P29/0243
摘要： A method and system of determining an electro-mechanical fault condition in a synchronous machine having a stator, a rotor, and exciter. The method includes: a) obtaining an exciter current signal which is a measurement of an exciter current through stationary windings of the exciter, b) transforming the exciter current signal to obtain an exciter current frequency spectrum, and c) determining whether an electro-mechanical fault condition is present, and a type of the electro-mechanical fault condition, based on harmonic content related to the frequency of the stator, of the exciter current frequency spectrum.
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公开(公告)号：US10353004B2
公开(公告)日：2019-07-16
申请号：US15310782
申请日：2015-03-24
申请人： ABB Schweiz AG
摘要： 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.
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9.发明申请SYSTEM FOR CONDITION MONITORING OF ELECTRIC MACHINE, MOBILE PHONE AND METHOD THEREOF 审中-公开电机监控系统，移动电话及其方法公开(公告)号：US20160306012A1
公开(公告)日：2016-10-20
申请号：US15196858
申请日：2016-06-29
申请人： ABB Schweiz AG
发明人： Cajetan Pinto , Maciej Orman , Prasad Mulay
CPC分类号： G01R31/343 , G01R29/0814 , G01R33/04 , G01R33/10
摘要： 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.
摘要翻译： 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。
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