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公开(公告)号：US10746767B2
公开(公告)日：2020-08-18
申请号：US15975187
申请日：2018-05-09
申请人： Fluke Corporation
摘要： Systems and methods are provided for measuring electrical parameters in an insulated conductor without requiring a galvanic connection. A non-contact, electrical parameter sensor probe may be operative to measure both current and voltage in an insulated conductor. The sensor probe includes a body, a Rogowski coil coupled to the body, and a non-contact voltage sensor coupled to the body or the Rogowski coil. The size of the loop of the Rogowski coil is selectively adjustable, such that the loop may be tightened around the conductor under test until the conductor is positioned adjacent a portion of the body or Rogowski coil that includes the non-contact voltage sensor. Measured electrical parameters may be provided to a user, e.g., via a display, or may be transmitted to one or more external systems via a suitable wired or wireless connection.
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公开(公告)号：US20200256900A1
公开(公告)日：2020-08-13
申请号：US16649731
申请日：2018-09-21
申请人： Hitachi, Ltd.
发明人： Kenji Miyata
摘要： In the present invention, in an electromagnetic device that uses a coil current, such as a motor, an initial value of a desired coil current waveform is inputted, a magnetic field analysis is performed for the electromagnetic device, a power supply voltage waveform which is derived from a magnetic vector potential acquired from the analysis is calculated, and a circuit coupled magnetic field analysis is performed by using a fundamental waveform component of the calculated power supply voltage waveform, thereby providing a power supply voltage waveform calculation method and a circuit coupled magnetic field analysis method for obtaining a steady solution more quickly than in the conventional technique.
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公开(公告)号：US10732208B2
公开(公告)日：2020-08-04
申请号：US16477997
申请日：2018-01-24
摘要： A flexible current sensor comprising a sensing coil wound on a cylindrical flexible core where the sensing coil comprises two in series connected overlapping windings wound along the cylindrical flexible core in mutually opposite direction. The cylindrical flexible core comprises a plurality of individual fibers from a nonmagnetic material arranged into the nearest approximation of a cylindrical shape and the sensing coil is equipped with a nonconductive separation layer located between its windings.
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公开(公告)号：US20200244059A1
公开(公告)日：2020-07-30
申请号：US16756421
申请日：2019-06-07
申请人： ENERGISA S/A
IPC分类号： H02H3/05 , H01H33/666 , H01H47/22 , H01H50/64 , G01R15/18
摘要： The invention relates to a single-phase, equipotential, self-powered recloser with a load life of more than 20 years, for installing in 15 KV medium-voltage networks, directly on Matthews-type fuse bases, using hooksticks, and without requiring the interruption of the energy supply. Said recloser uses a bistable electromagnetic actuator that controls a vacuum bulb for interrupting the current in the event of a fault. It stores energy in ultracapacitor banks which receive the first charge by means of an induction coil.
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公开(公告)号：US20200241049A1
公开(公告)日：2020-07-30
申请号：US16847576
申请日：2020-04-13
申请人： MediaTek Inc.
摘要： Apparatus and methods for sensing current carried by one or more planar conductors is described. A plurality of sensing coils may be fabricated adjacent to one or more planar, current-carrying conductors. The sensing coils may detect a magnetic field generated by time-varying current flowing through the one or more planar conductors. The sensing coils may be arranged to cancel uniform and linear-gradient magnetic fields.
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公开(公告)号：US20200185600A1
公开(公告)日：2020-06-11
申请号：US16794721
申请日：2020-02-19
摘要： A semiconductor package includes a semiconductor die. A through hole in the semiconductor package and semiconductor die extends from one side of the semiconductor package and die to an opposite side of the semiconductor package and die. The through hole is configured to receive a current-carrying conductor there through. At least one current sensor is formed in, or on, the semiconductor die and configured to sense current flow in the current-carrying conductor received in the through hole.
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公开(公告)号：US20200185139A1
公开(公告)日：2020-06-11
申请号：US16214822
申请日：2018-12-10
发明人： Eric M. Sawyer
摘要： A compression housing for a laminate core of an inductive current transformer is disclosed herein. The laminate core may include a portion wound with a secondary winding. The laminate core may be housed in the housing operable between opened and closed configurations. The compression housing may include contact plates for providing an electrical contact to the laminate core in closed configuration. The compression housing may include compression wedges to provide compression to the laminate core between the compression wedge and the contact plate. The current transformer may be used to obtain electric power and electric current measurements from a primary conductor.
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78.发明申请公开(公告)号：US20200182913A1
公开(公告)日：2020-06-11
申请号：US16709216
申请日：2019-12-10
发明人： Hyun-Tak KIM , Bit Na KIM , Sungwoo JO
摘要： The present invention relates to a current sensor which measures alternating electromagnetic wave and a current breaker using the same, and the current sensor for alternating current is characterized in that it includes a sensor part arranged at a separation distance from the power wire through which alternating current is flowing; and a means of detecting alternating current by measuring the electromagnetic wave generated across the above sensor part by the electromotive force induced by the alternating current flowing through the above power wire, and in that the above means of detecting alternating current includes an amplifier.
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公开(公告)号：US10670634B2
公开(公告)日：2020-06-02
申请号：US15522296
申请日：2015-10-21
摘要： A sensor, for measuring current in a conductor, has a stack with at least one isolation layer and at least two metallization layers stacked in a z direction, a first winding of conductive material and a second winding of conductive material, the first and second winding each having first and second parts formed in a metallization layer in the stack and mainly extending respectively in y and z directions and respectively having first and second centers of gravity. The first and second centers of gravity are respectively in first and second planes, wherein the first plane intersects with the second plane in a common intersection line in the second direction. The z direction and the y direction are orthogonal. The sensor has measurer configured to measure current through the first and second winding.
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公开(公告)号：US10670633B2
公开(公告)日：2020-06-02
申请号：US15179003
申请日：2016-06-10
发明人： Martin Cook
IPC分类号： G01R15/18
摘要： A coil that includes an alarm.
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