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公开(公告)号：US12038467B2
公开(公告)日：2024-07-16
申请号：US17665782
申请日：2022-02-07
Applicant: General Electric Company
Inventor： Han Xiong , Karim Younsi , Lili Zhang , Weijun Yin
IPC: G01R31/12
CPC classification number: G01R31/1272
Abstract: Partial discharge detection techniques are provided. In one aspect, a method of detecting partial discharge in an electrical power system having a power electronics converter is provided. A first current signal is captured in response to a first applied voltage. A second current signal is captured in response to a second applied voltage, the second applied voltage being different than the first applied voltage. The first current signal is set as a reference signal. A difference signal is determined based on the second current signal and the reference signal. A determination is made as to whether partial discharge is present based on the difference signal. The method may iterate, and for each iteration, the reference signal is refreshed on a rolling basis as a previously captured current signal measured in response to a previously applied voltage. The applied voltage is also stepped up or down for each iteration.
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Patent Agency Ranking
公开(公告)号：US20230251297A1
公开(公告)日：2023-08-10
申请号：US17665782
申请日：2022-02-07
Applicant: General Electric Company
Inventor： Han Xiong , Karim Younsi , Lili Zhang , Weijun Yin
IPC: G01R31/12
CPC classification number: G01R31/1272
Abstract: Partial discharge detection techniques are provided. In one aspect, a method of detecting partial discharge in an electrical power system having a power electronics converter is provided. A first current signal is captured in response to a first applied voltage. A second current signal is captured in response to a second applied voltage, the second applied voltage being different than the first applied voltage. The first current signal is set as a reference signal. A difference signal is determined based on the second current signal and the reference signal. A determination is made as to whether partial discharge is present based on the difference signal. The method may iterate, and for each iteration, the reference signal is refreshed on a rolling basis as a previously captured current signal measured in response to a previously applied voltage. The applied voltage is also stepped up or down for each iteration.
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公开(公告)号：US20230048950A1
公开(公告)日：2023-02-16
申请号：US17883780
申请日：2022-08-09
Applicant: General Electric Company
Inventor： Weijun Yin , Karim Younsi , Ibrahima Ndiaye , Mark Dame , Han Xiong , Rinaldo Luigi Miorini
Abstract: A cable that includes a conductor defining a hollow interior, a casing surrounding the conductor, an electrical insulator positioned between the conductor and the casing, and a fluid positioned within the hollow interior of the conductor.
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公开(公告)号：US11846665B2
公开(公告)日：2023-12-19
申请号：US17412343
申请日：2021-08-26
Applicant: General Electric Company
Inventor： Lili Zhang , Karim Younsi , Christopher Michael Calebrese , John Russell Yagielski , Han Xiong
CPC classification number: G01R31/1227 , G01R31/008 , G01R31/343
Abstract: Aspects of the present disclosure are directed to systems and methods for detecting Partial Discharge (PD) associated with wide bandgap semiconductor-based electrical drive systems in real time. In one aspect, signals, including noise associated with drive switching and other background noises are detected using a sensing device. The signals are received by a real-time spectrum analyzer. The spectrum analyzer transforms the signals into the frequency domain and determines or registers the frequency domain profiles of the signals. The spectrum analyzer performs signal discrimination between at least one other signal included within the signals and switching noise based on their frequency domain profiles. Based on the discrimination analysis, the presence of a partial discharge signal may be detected. A physics-based signal discrimination approach can also be used for signal discrimination, for example utilizing pressure-dependency of characteristics of a PD signal.
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公开(公告)号：US20230389241A1
公开(公告)日：2023-11-30
申请号：US18081770
申请日：2022-12-15
Applicant: General Electric Company
Inventor： Sanjay Vijayaraghavan , Libing Wang , Han Xiong , Kum Kang Huh , Di Pan , Mark Edward Dame , Rajib Datta , Alankrita Singh
CPC classification number: H05K7/20927 , H05K5/0217
Abstract: A power converter assembly includes a housing, a cold plate in the housing, and a set of power converter components on the cold plate. The cold plate is configured to receive a coolant. A first medium in the housing surrounds the cold plate and components. An expandable heat transfer structure is attached to one of the cold plate and the housing.
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公开(公告)号：US20220065915A1
公开(公告)日：2022-03-03
申请号：US17412343
申请日：2021-08-26
Applicant: General Electric Company
Inventor： Lili Zhang , Karim Younsi , Christopher Michael Calebrese , John Russell Yagielski , Han Xiong
Abstract: Aspects of the present disclosure are directed to systems and methods for detecting Partial Discharge (PD) associated with wide bandgap semiconductor-based electrical drive systems in real time. In one aspect, signals, including noise associated with drive switching and other background noises are detected using a sensing device. The signals are received by a real-time spectrum analyzer. The spectrum analyzer transforms the signals into the frequency domain and determines or registers the frequency domain profiles of the signals. The spectrum analyzer performs signal discrimination between at least one other signal included within the signals and switching noise based on their frequency domain profiles. Based on the discrimination analysis, the presence of a partial discharge signal may be detected. A physics-based signal discrimination approach can also be used for signal discrimination, for example utilizing pressure-dependency of characteristics of a PD signal.
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