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21 条记录 (耗时 0.01 秒)

    Movable core transducer
    1.
    发明授权
    Movable core transducer 失效
    移动式核心传感器

    公开(公告)号：US4694246A

    公开(公告)日：1987-09-15

    申请号：US909306

    申请日：1986-09-19

    申请人： Jean-Bernard Avisse

    发明人： Jean-Bernard Avisse

    IPC分类号： G01D5/22 ,  H01F38/22 ,  G01B7/14 ,  H01F21/06

    CPC分类号： G01D5/2258 ,  H01F38/22

    摘要： The transducer has a primary winding wound around a first cylindrical support which delimits a passage where a core is axially movable, a first secondary winding wound around the primary winding and a second secondary winding wound on a second cylindrical support which surrounds completely the first secondary winding. The first secondary winding is formed in two portions: a regularly wound portion and a stepped portion which are phase connected, and the second secondary winding is formed in two similar portions which are antiphase connected. The output signals of the secondary windings are combined to obtain a differential signal representative of the ratio between the sum and the difference of said signals. The secondary windings are designated so that the ratio cannot reach the value +1 or -1 unless one secondary winding is cut-off, thus conferring to the transducer the capacity of being self-monitored. The separation between the secondary windings avoids any substantial capacitive coupling therebetween, and their mounting on separate supports makes it possible to vary their mutual axial position to adjust the response characteristics of the transducer.

    摘要翻译： 传感器具有卷绕在第一圆柱形支撑件周围的初级绕组，第一圆柱形支撑件限定了芯可轴向移动的通道，缠绕在初级绕组上的第一次级绕组和缠绕在第二圆柱形支撑件上的第二次级绕组，该第二次级绕组完全包围第一次级绕组 。 第一次级绕组形成为相连接的规则缠绕部分和阶梯部分两部分，并且第二次级绕组形成为反相连接的两个相似部分。 次级绕组的输出信号被组合以获得表示所述信号的和与差的比率的差分信号。 次级绕组被指定为使得该比率不能达到值+1或-1，除非一个次级绕组被切断，从而赋予换能器自我监测的能力。 次级绕组之间的间隔避免了它们之间的任何实质的电容耦合，并且它们在单独的支撑件上的安装使得可以改变它们的相互轴向位置以调节换能器的响应特性。

    End cap for primary windings
    2.
    发明授权
    End cap for primary windings 失效

    公开(公告)号：US3925744A

    公开(公告)日：1975-12-09

    申请号：US52325574

    申请日：1974-11-13

    申请人： GEN ELECTRIC

    发明人： CANNEY ROBERT S

    IPC分类号： H01F27/32 ,  H01F27/34 ,  H01F38/22 ,  H01F15/04 ,  H01F27/28

    CPC分类号： H01F38/22 ,  H01F27/324 ,  H01F27/34

    摘要： End caps for the primary winding of an instrument transformer have a radius to relieve the electrical stress at the sharp edges of the primary. The end caps are provided with recesses to receive the primary leads and also have other recesses for locating the primary in a mold for encapsulating the instrument transformer. Lugs or tongues are provided at the inner edge of the end caps to support the winding during molding. Prior to molding, a conducting tape is attached to one primary lead and wound around the end caps.

    ENERGY HARVESTING DEVICE
    3.
    发明申请
    ENERGY HARVESTING DEVICE 审中-公开

    公开(公告)号：US20170199533A1

    公开(公告)日：2017-07-13

    申请号：US15386024

    申请日：2016-12-21

    申请人： Electric Power Research Institute Inc.

    发明人： Norman D. MCCOLLOUGH

    IPC分类号： G05F1/335 ,  H01F38/34 ,  G05F1/325

    CPC分类号： G05F1/335 ,  G05F1/325 ,  H01F38/14 ,  H01F38/22 ,  H01F2038/305

    摘要： A device for harvesting energy from a power line carrying AC current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first DC core-flux control winding wound around the first section of the core; and a second DC core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings.

    End cap for primary windings
    7.
    发明授权
    End cap for primary windings 失效
    初级绕组端盖

    公开(公告)号：US3978548A

    公开(公告)日：1976-09-07

    申请号：US600036

    申请日：1975-07-29

    申请人： Robert S. Canney

    发明人： Robert S. Canney

    IPC分类号： H01F27/32 ,  H01F27/34 ,  H01F38/22 ,  F16L11/10

    CPC分类号： H01F38/22 ,  H01F27/324 ,  H01F27/34 ,  Y10T16/42

    摘要： End caps for the primary winding of an instrument transformer have a radius to relieve the electrical stress at the sharp edges of the primary. The end caps are provided with recesses to receive the primary leads and also have other recesses for locating the primary in a mold for encapsulating the instrument transformer. Lugs or tongues are provided at the inner edge of the end caps to support the winding during molding. Prior to molding, a conducting tape is attached to one primary lead and wound around the end caps.

    摘要翻译： 仪表变压器初级绕组的端盖具有半径以减轻初级边缘尖锐边缘处的电应力。 端盖设置有用于接收主引线的凹部，并且还具有用于将初级定位在用于封装仪表变压器的模具中的其它凹部。 在端盖的内边缘处提供凸耳或舌片以在模制期间支撑绕组。 在模制之前，将导电带附接到一个主要引线并缠绕在端盖上。

    Aggregate current transformer
    10.
    发明授权
    Aggregate current transformer 失效
    总电流互感器

    公开(公告)号：US5576921A

    公开(公告)日：1996-11-19

    申请号：US498897

    申请日：1995-07-06

    申请人： Markus Brunner

    发明人： Markus Brunner

    IPC分类号： H01F3/08 ,  H01F38/22 ,  H01H83/14 ,  H02H3/16 ,  H01F17/04

    CPC分类号： H01F3/08 ,  H01F38/22 ,  H01H83/144

    摘要： A sum current transformer that acts on a protective switch via an amplifier has a core of a solid metallic material composed of an alloy having more than 40% nickel, so that it can be implemented mechanically solid even given small dimensions. The temperature dependency of the arrangement caused by the ohmic resistance of the winding is compensated by the diminishing eddy currents in the core given increasing temperature, so that the smallest dimensions can be realized for the aggregate current transformer.

    摘要翻译： 通过放大器作用在保护开关上的和电流互感器具有由具有超过40％镍的合金构成的固体金属材料的芯，使得即使在小尺寸下也可以机械地实现。 由绕组的欧姆电阻引起的布置的温度依赖性由于在增加的温度下磁芯中的涡流减小而得到补偿，从而可以为集合电流互感器实现最小的尺寸。