-
公开(公告)号：US12130309B2
公开(公告)日：2024-10-29
申请号：US18375490
申请日：2023-09-30
申请人： UBICQUIA, INC.
CPC分类号： G01R15/181 , H01F38/30
摘要： An apparatus for positioning and retaining a Rogowski coil around a conductor includes a first member configured to receive a first section of the Rogowski coil, a second member configured to receive a second section of the Rogowski coil, and a non-conductive securing structure configured to engage the conductor and retain the first member and the second member in fixed positions relative to the conductor. According to one exemplary embodiment, the apparatus may also include a coupling mechanism configured to permit at least one of the first member and the second member to be moved relative to each other and positioned around the conductor. According to another exemplary embodiment, the securing structure may include a pair of arched elements, wherein each arched element is configured to engage the conductor and retain a corresponding one of the first and second members in a respective fixed position relative to the conductor.
-
公开(公告)号：US12123898B1
公开(公告)日：2024-10-22
申请号：US17968156
申请日：2022-10-18
申请人： XL Scientific, LLC
发明人： Jacob L Lowe , Matthew Domonkos , John J Osowski
CPC分类号： G01R15/181 , G01R19/0092
摘要： A method and apparatus for sending current. A flow of current can be passed through a portion of the sensor, such that the sensor forms part of the current flow circuit. The sensor can be especially useful in high vacuum environments and/or in areas where a small sensor is desired. In one embodiment, the current sensor can form part of a ground circuit and a leg of the sensor can comprise a leg of the drive circuit. A current sensing loop of the sensor can at least partially encircle a portion of the sensor itself such that the current sensing loop senses current flowing through the sensor.
-
公开(公告)号：US20240345144A1
公开(公告)日：2024-10-17
申请号：US18299839
申请日：2023-04-13
发明人： Matt Karlgaard , John Voisine , Frank Boudreau
CPC分类号： G01R22/065 , G01R15/18
摘要： An electric meter (100, 200) is disclosed. The electric meter comprises a line port for coupling to an electric distribution power source, a load port for coupling to a load, and an auxiliary port for coupling to at least one distributed energy resource device. The electric meter comprises a processor circuit (205) coupled to metrology components (210) for metering current and/or voltage at one or more of the line port, the load port and the auxiliary port. The electric meter comprises a power supply (220) configured to provide power to the processor circuit, wherein the power supply is configured to receive electrical power from the auxiliary port and/or from the line port.
-
公开(公告)号：US20240329089A1
公开(公告)日：2024-10-03
申请号：US18367256
申请日：2023-09-12
发明人： Adrian Abdala RENDON HERNANDEZ , Juan Ignacio MELECIO RAMIREZ , Collin Richard FISCHELS , Austin DERBY
CPC分类号： G01R15/181 , G01R19/0092 , H05K1/115 , H05K1/165
摘要： Systems and methods for sensing current provide a Rogowski coil type current sensor for a current flow monitoring device in which the coil windings are formed by electrically conductive traces on a printed circuit board (PCB) substrate. Each coil winding is composed of two or more elongate traces formed on a PCB substrate and extending radially outward from a central opening or hole in the PCB substrate. Each trace coil winding is connected to electrically conductive vias, one via at each end of the trace. The via at one end connects the trace to another trace in coil winding, while the via at the other end connects the trace to a different trace in the same coil winding or an adjacent coil winding. The result is a conductive helix encircling the central opening in the PCB substrate that electrically resembles a Rogowski coil.
-
公开(公告)号：US12072366B2
公开(公告)日：2024-08-27
申请号：US18220009
申请日：2023-07-10
申请人： Bender GmbH & Co. KG
发明人： Pascal Becker
CPC分类号： G01R31/086 , G01R15/18 , G01R23/00 , G01R27/025 , G01R27/08 , G01R27/18 , G01R27/2605
摘要： A method and an electric circuit arrangement for determining a branch insulation resistance and a branch leakage capacitance of a line branch to be monitored in a branched, ungrounded power supply system having active conductors and a measuring voltage fed centrally by a controllable measuring voltage source and a residual current caused by the measuring voltage being registered using a current sensor in the line branch to be monitored. The centrally supplied measuring voltage is formed over a generator period having a characteristic signal form defined via the frequency composition. By this (frequency) modulation of the measuring voltage, information is transmitted from the central feed location of the measuring voltage to the current sensor disposed in the line branch to be monitored. Based on this information, the current sensor can establish with which resistance value the coupling circuit feeds the measuring voltage in the corresponding generator period, without another communication channel being required.
-
公开(公告)号：US20240283347A1
公开(公告)日：2024-08-22
申请号：US18413743
申请日：2024-01-16
申请人： Enphase Energy, Inc.
发明人： Michael J. HARRISON
CPC分类号： H02M1/0009 , G01R15/18 , H01F27/427 , G01R19/25
摘要： An apparatus configured for use with a microinverter of an energy management system is provided. For example, apparatus can comprise a cascaded current transformer configuration comprising a first current transformer having a first primary winding configured to couple to a secondary winding of a power transformer of the microinverter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the microinverter.
-
公开(公告)号：US20240272208A1
公开(公告)日：2024-08-15
申请号：US18644470
申请日：2024-04-24
IPC分类号： G01R19/165 , G01R15/18 , G01R33/07 , H05K1/18
CPC分类号： G01R19/16504 , G01R15/181 , G01R33/072 , H05K1/181 , H05K2201/10151
摘要： A current sensor assembly can include: a coil structure having a first coil and a second coil connected in series, the coil structure configured to generate a differential magnetic field responsive to an electrical current passing through the first and second coils; a first magnetic field sensing element disposed proximate to the first coil and operable to generate a first signal responsive to the differential magnetic field passing through the first magnetic field sensing element in a first direction; a second magnetic field sensing element disposed proximate to the second coil and operable to generate a second signal responsive to the differential magnetic field passing through the second magnetic field sensing element in a second direction; and a circuit operable to subtract the first and second signals to generate a differential signal proportional to the electrical current.
-
公开(公告)号：US12061214B2
公开(公告)日：2024-08-13
申请号：US17630716
申请日：2020-07-20
申请人： LEM INTERNATIONAL SA
发明人： Stephan Trombert
CPC分类号： G01R15/185 , G01R33/04
摘要： Fluxgate current transducer including a fluxgate device comprising a saturable soft magnetic core and an excitation coil, and a processing circuit comprising a control circuit and a voltage generator connected to the control circuit for generating an alternating current in the excitation coil, the voltage generator generating a voltage oscillating between a maximum positive voltage (+Umax) and a maximum negative voltage (−Umax) configured to alternatingly saturate the soft magnetic core. The control circuit is configured to generate a voltage having an absolute value of amplitude less than an absolute value of said maximum positive voltage (+Umax) and said maximum negative voltage (−Umax) voltage during a variable time window (Tn, Tn+1, Tn+2, Tn+3) after detection of the excitation coil current reaching a threshold current (S3) representative of saturation of the magnetic core during at least a subset of a plurality of alternating voltage periods (P).
-
公开(公告)号：US20240264203A1
公开(公告)日：2024-08-08
申请号：US18293401
申请日：2022-07-19
申请人： LEM INTERNATIONAL SA
发明人： Stéphan Trombert
CPC分类号： G01R15/183 , G01R19/0092
摘要： Electric current transducer comprising a housing, a magnetic core and a magnetic field detection system, the magnetic core surrounding a primary conductor passage for receiving a primary conductor therethrough, the magnetic core comprising a first part and a second part assembled in the housing so as to form a first magnetic circuit gap and a second magnetic circuit gap, the magnetic field detection system comprising a first magnetic field detector positioned in the first magnetic circuit gap and a second magnetic field detector positioned in the second magnetic circuit gap, the first and second magnetic circuit gaps being disposed on opposing sides of magnetic core, each of the first and second parts comprising a pair of lateral branches, joined by a bridging branch.
-
公开(公告)号：US20240248120A1
公开(公告)日：2024-07-25
申请号：US18624337
申请日：2024-04-02
CPC分类号： G01R15/181 , G01R19/12
摘要： A rate of change of current sensor includes two measurement coils, arranged such that the turns of the first and second measurement coils are interleaved. The rate of change of current sensor further comprises two return coils, arranged to progress in an opposite direction to the measurement coils. The coils form loops and progress substantially around a target measurement conductor. This ensures that the two measurement coils both receive the same electrostatic coupling from external conductors which are not the target of the measurement operation. Further, the two measurement coils are arranged such that the first coil and the second coil are, on average, the same distance to the current-carrying conductor of interest.
-
-
-
-
-
-
-
-
-
搜索结果
2133 条记录 (耗时 0.022 秒)
