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公开(公告)号：US09255970B2
公开(公告)日：2016-02-09
申请号：US13629206
申请日：2012-09-27
Applicant: General Electric Company
Inventor： Prabhakar Neti , Karim Younsi , Yingneng Zhou , Manoj Ramprasad Shah , Pinjia Zhang , Charles David Whitefield, II
CPC classification number: G01R31/343 , G01R31/1272 , G01R31/346
Abstract: Systems and methods are disclosed for on-line monitoring of the condition of the stator insulation of an AC motor or an electric generator. In certain embodiments, the system includes a transformer surrounding each pair of input and output cables associated with a given phase of power provided to the AC motor or generated by the electric generator. In another embodiment, a transformer surrounds the three input cables (for an AC motor) or the three output cables (for an electric generator) that correspond to phases of the AC motor or electric generator. In both embodiments, the transformers generate voltages that may be used to monitor leakage currents associated with the cables. A microcontroller monitors the voltages generated by the transformers and determines the condition of the stator insulation of the AC motor or the electric generator based on the voltages.
Abstract translation: 公开了用于在线监测交流电动机或发电机的定子绝缘的状态的系统和方法。 在某些实施例中，系统包括围绕与提供给AC电动机或由发电机产生的给定相电源相关联的每对输入和输出电缆的变压器。 在另一个实施例中，变压器围绕对应于AC电动机或发电机的相位的三个输入电缆（用于AC电动机）或三个输出电缆（用于发电机）。 在两个实施例中，变压器产生可用于监测与电缆相关联的泄漏电流的电压。 微控制器监视变压器产生的电压，并基于电压确定交流电动机或发电机的定子绝缘的状况。
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公开(公告)号：US20140084937A1
公开(公告)日：2014-03-27
申请号：US13629206
申请日：2012-09-27
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prabhakar Neti , Karim Younsi , Yingneng Zhou , Manoj Ramprasad Shah , Pinjia Zhang , Charles David Whitefield, II
IPC: G01R31/34
CPC classification number: G01R31/343 , G01R31/1272 , G01R31/346
Abstract: Systems and methods are disclosed for on-line monitoring of the condition of the stator insulation of an AC motor or an electric generator. In certain embodiments, the system includes a transformer surrounding each pair of input and output cables associated with a given phase of power provided to the AC motor or generated by the electric generator. In another embodiment, a transformer surrounds the three input cables (for an AC motor) or the three output cables (for an electric generator) that correspond to phases of the AC motor or electric generator. In both embodiments, the transformers generate voltages that may be used to monitor leakage currents associated with the cables. A microcontroller monitors the voltages generated by the transformers and determines the condition of the stator insulation of the AC motor or the electric generator based on the voltages.
Abstract translation: 公开了用于在线监测交流电动机或发电机的定子绝缘的状态的系统和方法。 在某些实施例中，系统包括围绕与提供给AC电动机或由发电机产生的给定相电源相关联的每对输入和输出电缆的变压器。 在另一个实施例中，变压器围绕对应于AC电动机或发电机的相位的三个输入电缆（用于AC电动机）或三个输出电缆（用于发电机）。 在两个实施例中，变压器产生可用于监测与电缆相关联的泄漏电流的电压。 微控制器监视变压器产生的电压，并基于电压确定交流电动机或发电机的定子绝缘的状况。
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3.发明授权High sensitivity differential current transformer for insulation health monitoring 有权高灵敏度差动电流互感器，用于绝缘健康监测公开(公告)号：US08773139B2
公开(公告)日：2014-07-08
申请号：US13852500
申请日：2013-03-28
Applicant: General Electric Company
Inventor： Karim Younsi , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II , Prabhakar Neti
CPC classification number: G01R31/025 , G01R15/185 , G01R31/1227 , G01R31/343 , G01R31/346 , H01F38/30
Abstract: A current transformer is provided. The current transformer comprises an inner magnetic core having a central opening, an outer sense core circumscribing the inner magnetic core, at least one pair of conductors extending through the central opening and positioned symmetrically with respect to a center point of the inner magnetic core, and one or more coils disposed on the inner magnetic core, the outer sense core, or both, in a magnetically balanced configuration relative to a magnetic neutral axis of the inner magnetic core.
Abstract translation: 提供电流互感器。 电流互感器包括具有中心开口的内部磁芯，围绕内部磁芯的外部感知芯，至少一对延伸穿过中心开口并且相对于内部磁芯的中心点对称定位的导体，以及 设置在内磁芯上的一个或多个线圈，外感测芯或两者，相对于内磁芯的磁中性轴以磁平衡构型。
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4.发明申请HIGH SENSITIVITY DIFFERENTIAL CURRENT TRANSFORMER FOR INSULATION HEALTH MONITORING 有权用于绝缘健康监测的高灵敏度差分电流互感器公开(公告)号：US20130234722A1
公开(公告)日：2013-09-12
申请号：US13852500
申请日：2013-03-28
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Karim Younsi , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II , Prabhakar Neti
IPC: G01R31/02
CPC classification number: G01R31/025 , G01R15/185 , G01R31/1227 , G01R31/343 , G01R31/346 , H01F38/30
Abstract: A current transformer is provided. The current transformer comprises an inner magnetic core having a central opening, an outer sense core circumscribing the inner magnetic core, at least one pair of conductors extending through the central opening and positioned symmetrically with respect to a center point of the inner magnetic core, and one or more coils disposed on the inner magnetic core, the outer sense core, or both, in a magnetically balanced configuration relative to a magnetic neutral axis of the inner magnetic core
Abstract translation: 提供电流互感器。 电流互感器包括具有中心开口的内部磁芯，围绕内部磁芯的外部感知芯，至少一对延伸穿过中心开口并且相对于内部磁芯的中心点对称定位的导体，以及 一个或多个线圈设置在内磁芯，外感测芯或两者上，磁性平衡构型相对于内磁芯的磁中性轴线
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