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1.发明公开公开(公告)号：US20240302423A1
公开(公告)日：2024-09-12
申请号：US18597244
申请日：2024-03-06
发明人： Johannes Raith , Mario Scala
摘要： A method for assessing the aging or monitoring the status of an electrical device that has a solid insulation arrangement and a liquid and/or gaseous insulating medium in contact with the solid insulation arrangement. In a first step S1, a thermo-hydraulic aging model is provided and a simulation for the electrical device is carried out. S2) local temperatures are calculated for various areas of the electrical device in the scope of the simulation; and S3) amounts of at least one aging product, which arises due to the aging of the solid insulation arrangement and passes into the insulating medium, are calculated for the various areas. There is also provided a corresponding computer program and a computer-readable medium.
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2.发明公开公开(公告)号：US20240079868A1
公开(公告)日：2024-03-07
申请号：US18201182
申请日：2023-09-14
申请人： Plamen Doynov
发明人： Plamen Doynov
IPC分类号： H02H9/04 , G01R31/12 , G01R31/327 , H02H5/00
摘要： A method and system for suppressing EMP-induced voltage surges due to transient electromagnetic energy disturbance such as a detonation of a nuclear weapon at high altitude generating an EMP (HEMP) comprising E1, E2, and E3 component pulses. Surge protection assemblies are mounted inline, intermediate AC and DC distribution power lines and a plurality of electrical and electronic devices, powered by the lines. The inline mounting of the reconfigurable surge suppression system eliminates any time delay response of the plurality of protecting assemblies and the allowable voltage amplitude level of the protecting assemblies are selected and combined to achieve a predefined desired response time and protection level capacity to react to and mitigate the E1, E2, and E3 components of a complex multi-pulse EMP pulse generated by detonation of a nuclear weapon at high altitude (HEMP). The reconfigurable surge suppressing systems is interoperable with plurality of electrical interfaces.
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公开(公告)号：US11921167B2
公开(公告)日：2024-03-05
申请号：US17752178
申请日：2022-05-24
申请人： Yazaki Corporation
发明人： Yasuyuki Mochizuki , Norio Sudo , Ryosuke Arigaya
CPC分类号： G01R31/52 , G01R27/2605 , G01R31/12
摘要： An earth fault detection apparatus includes a switch group configured to switch between a first measurement path including a battery and a capacitor, a second measurement path including the battery, a negative-side insulation resistance, and the capacitor, a third measurement path including the battery, a positive-side insulation resistance, and the capacitor; and a control unit configured to calculate a reference value, based on each charging voltage of the capacitor in each measurement path, and configured to calculate an insulation resistance with reference to a predetermined conversion map, in which the conversion map includes a conversion map corresponding to a capacitance of the capacitor, and the control unit estimates the capacitance of the capacitor, and refers to the conversion map corresponding to the capacitance of the capacitor that has been estimated.
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公开(公告)号：US11892343B2
公开(公告)日：2024-02-06
申请号：US17149488
申请日：2021-01-14
发明人： Peng Xu , Jian-She Feng , Chen-Yang Ma , Jian-Li Xu
摘要： An ultrasonic sensor, which is installed on a test device, includes a shell, one end is open, the other end is closed surface; a cover sheet, bonded to the open end of the shell; a copper foil, a lower surface of the copper foil is bonded to an inner bottom surface of the closed surface of the shell; a piezoelectric chip, a lower surface of the piezoelectric chip is bonded to a upper surface of the copper foil, and when the test device vibrates, the piezoelectric chip converts a vibration signal into a voltage response signal; a cable, a positive electrode is welded on a upper surface of the piezoelectric chip, and a negative electrode is welded on the upper surface of the copper foil, configured to connect to an external detection device and transmit the voltage response signal to the external detection device.
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公开(公告)号：US20230349965A1
公开(公告)日：2023-11-02
申请号：US18348884
申请日：2023-07-07
摘要： A partial discharge measurement system comprising: at least one sensor configured to detect a voltage signal propagating through a conductor connected to a rotating electrical machine in a non-contact manner; a first bandpass filter through which a component of a first frequency included in the voltage signal acquired by the sensor passes; a second bandpass filter through which a component of a second frequency included in the voltage signal acquired by the sensor passes, the second frequency being lower than the first frequency; a phase acquirer configured to acquire a phase waveform of the component of the second frequency having passed through the second bandpass filter; and an output interface configured to output information by which a component of partial discharge of the rotating electrical machine included in the component of the first frequency having passed through the first bandpass filter can be identified based on the phase waveform.
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公开(公告)号：US11714140B2
公开(公告)日：2023-08-01
申请号：US17873770
申请日：2022-07-26
申请人： Yazaki Corporation
发明人： Yasuyuki Mochizuki , Norio Sudo , Haruhiko Yoshida
CPC分类号： G01R31/52 , G01R27/2605 , G01R31/007 , G01R31/12 , B60L3/0069 , Y02E60/10
摘要： A ground fault detection device includes: a detection capacitor; a switch group for switching between a first charging path connecting the battery and the detection capacitor, a second charging path connecting the battery, a negative side insulation resistance and the detection capacitor, a third charging path connecting the battery, a positive side insulation resistance and the detection capacitor, and a measurement path for measuring a charging voltage of the detection capacitor; and a controller configured to calculate the insulation resistance based on a charging voltage measured value of the detection capacitor which exists after charging each of the charging paths, wherein after measurement of the charging voltage of the second charging path, the controller is configured to cause the switch group to switch to the third charging path before switching to the first charging path.
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公开(公告)号：US20230152833A1
公开(公告)日：2023-05-18
申请号：US18096123
申请日：2023-01-12
发明人： Jon A. BICKEL
CPC分类号： G05F1/66 , G01R31/12 , G01R31/088 , G05B13/048 , G05B23/027 , H02H7/20 , H02H9/042
摘要： A method for reducing and/or managing energy-related stress in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one intelligent electronic device (IED) in the electrical system to identify and track at least one energy-related transient in the electrical system. An impact of the at least one energy-related transient on equipment in the electrical system is quantified, and one or more transient-related alarms are generated in response to the impact of the at least one energy-related transient being near, within or above a predetermined range of the stress tolerance of the equipment. The transient-related alarms are prioritized based in part on at least one of the stress tolerance of the equipment, the stress associated with one or more transient events, and accumulated energy-related stress on the equipment. One or more actions are taken in the electrical system in response to the transient-related alarms to reduce energy-related stress on the equipment in the electrical system.
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8.发明申请公开(公告)号：US20180308773A1
公开(公告)日：2018-10-25
申请号：US16010654
申请日：2018-06-18
发明人： Dong Seup Lee , Jungwoo Joh , Sameer Pendharkar
IPC分类号： H01L21/66 , G01R31/28 , H01L27/088 , H01L29/06 , H01L23/544 , H01L29/20 , H01L29/417 , G01R31/12 , H01L29/40
CPC分类号： H01L22/34 , G01R31/12 , G01R31/2621 , G01R31/2642 , H01L23/544 , H01L27/088 , H01L29/0649 , H01L29/2003 , H01L29/404 , H01L29/41725
摘要： A first set of test structures for a gallium nitride (GaN) transistor that includes N field plates is disclosed, where N is an integer and X is an integer between 0 and N inclusive. A test structure TSX of the first set of test structures includes a GaN substrate, a dielectric material overlying the GaN substrate, a respective source contact abutting the GaN substrate and a respective drain contact abutting the GaN substrate. The test structure TSX also includes a respective gate overlying the substrate and lying between the respective source contact and the respective drain contact and X respective field plates corresponding to X of the N field plates of the GaN transistor, the X respective field plates including field plates that are nearest to the GaN substrate.
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公开(公告)号：US09945894B2
公开(公告)日：2018-04-17
申请号：US13770382
申请日：2013-02-19
发明人： Dennis F. Grosjean
CPC分类号： G01R31/024 , G01R31/12 , H02H1/0015 , H02H3/40
摘要： The present disclosure provides systems and methods for detecting arc faults. For some embodiments, arc faults are detected from waveforms that are acquired and processed, preferably using an Average Magnitude Difference Function (AMDF). The characteristics of the waveform provide an indication of whether or not an arcing fault occurred.
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公开(公告)号：US20180048138A1
公开(公告)日：2018-02-15
申请号：US15675389
申请日：2017-08-11
申请人： ABB Schweiz AG
发明人： Sauro Macerini
CPC分类号： H02H1/0015 , G01R19/15 , G01R31/12 , G01R31/40 , H01H83/144 , H02H3/33 , H02S50/00 , Y02E10/56
摘要： An arc fault detection arrangement (50) for a DC electric bus (100), said DC electric bus having a plurality of electric lines (L1, L2, LN) adapted to electrically connect a source section (200) and a load section (300) of an electric apparatus (500), said arc fault detection arrangement comprising an arc fault detector (10) adapted to receive and process detection signals (DS) indicative of AC currents flowing along said electric lines (L1, L2, LN) characterised in that it comprises a current sensing device (1).Said current sensing device comprises: primary winding means (21) comprising a plurality of first primary winding conductors (PW11, PW12, PW1N) adapted to be electrically connected in series with source portions (C1S) and load portions (C1L) of corresponding first line conductors (C1) of said electric lines (L1, L2, LN); secondary winding means (22) magnetically coupleable with said first primary winding means, said secondary winding means comprising at least a first secondary winding conductor (SW1) electrically connected with said arc fault detector (10) to provide said detection signals (DS) to said arc fault detector.
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