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392 条记录 (耗时 0.021 秒)

    Resonant Transformer
    81.
    发明申请
    Resonant Transformer 审中-公开

    公开(公告)号：US20170287629A1

    公开(公告)日：2017-10-05

    申请号：US15620541

    申请日：2017-06-12

    申请人： Instrument Manufacturing Company

    发明人： Matthew S. Mashikian ,  Andrzej Pawel Szatkowski

    IPC分类号： H01F29/00 ,  H01F27/28

    CPC分类号： H01F29/00 ,  G01R31/027 ,  G01R31/1254 ,  H01F27/24 ,  H01F27/28 ,  H01F27/289 ,  H01F27/38 ,  H01F29/10

    摘要： Exemplary embodiments of the present disclosure are directed to resonant transformers (or reactors) and coil arrangements associated with resonant transformers. The coil arrangements can include a grounding coil configured to generate a net-zero induced voltage between a first end of the grounding coil and a second end of the grounding coil layer, and one or more step-up coil layers formed by one or more layers of pressure tape, insulating materials, and wire wrapped to form coils about a portions of a split magnetic core. The split magnetic core can include a first core segment and a second core segment, where one of the core segments is disposed within a main housing and one of the core segments is disposed external to the main housing. A gap between the first and second core segments can be manipulated to control an inductance of the resonant transformer.

    ARC DETECTOR AND A METHOD FOR DETECTING ARCS
    82.
    发明申请
    ARC DETECTOR AND A METHOD FOR DETECTING ARCS 审中-公开

    公开(公告)号：US20170254847A1

    公开(公告)日：2017-09-07

    申请号：US15446745

    申请日：2017-03-01

    申请人： APPLIED MATERIALS ISRAEL LTD.

    发明人： Tuvia Biber ,  Efim Kerner ,  Efraim Siman Tov

    IPC分类号： G01R31/02

    CPC分类号： G01R31/027 ,  G01R31/025

    摘要： A system comprising: a first high voltage unit that is coupled via a high voltage supply cable to a second high voltage unit; a transformer that is configured to magnetically couple the high voltage supply cable to windings of a transformer; and a detection unit that is configured to monitor a windings signal developed in the windings of the transformer to detect a first high voltage unit arc formed within the first high voltage unit and to detect a second high voltage unit arc formed within the second high voltage unit.

    Systems and methods for detecting turn-to-turn faults in windings
    83.
    发明授权
    Systems and methods for detecting turn-to-turn faults in windings 有权

    公开(公告)号：US09726706B1

    公开(公告)日：2017-08-08

    申请号：US15040549

    申请日：2016-02-10

    申请人： General Electric Company

    发明人： Zhiying Zhang ,  Sarasij Das ,  Tarlochan Sidhu ,  Mohammad Reza Dadash Zadeh

    IPC分类号： G01R31/02 ,  H02H3/16 ,  H02H7/04 ,  H02H7/045

    CPC分类号： G01R31/025 ,  G01R31/027 ,  G01R31/06 ,  H02H3/165 ,  H02H7/042 ,  H02H7/045

    摘要： System and method for detecting turn-to-turn faults in one or more windings of various objects are provided. In one implementation, a fault detector receives a set of current measurements associated with a transformer and uses these measurements to execute a procedure for detecting a turn-to-turn fault in the transformer. The procedure can include dividing a steady-state differential current value by a steady-state voltage value to obtain one or more compensating factors, determining a magnetizing current amplitude indicator by multiplying the steady-state voltage value by the one or more compensating factors, determining a compensated differential current value by combining the steady-state differential current value with a modifier value that incorporates the magnetizing current amplitude indicator, comparing the compensated differential current value against a threshold value, and declaring an occurrence of the turn-to-turn fault in the transformer when the compensated differential current value exceeds the threshold value.

    Apparatus and method for testing winding resistances of transformers based on an inductive voltage drop
    90.
    发明授权
    Apparatus and method for testing winding resistances of transformers based on an inductive voltage drop 有权
    基于感应电压降测试变压器绕组电阻的装置和方法

    公开(公告)号：US09581637B2

    公开(公告)日：2017-02-28

    申请号：US14116476

    申请日：2012-05-07

    申请人： Marc Muller

    发明人： Marc Muller

    IPC分类号： G01R31/06 ,  G01R27/14 ,  G01R31/02

    CPC分类号： G01R31/06 ,  G01R27/14 ,  G01R31/027

    摘要： An apparatus for measuring winding resistances of windings in a delta-connected transformer includes at least a first and a second DC current source connected each between the phase ends of a first and a second leg respectively of the primary side of the transformer and at least a third DC current source connected between two nodes of the secondary side of the transformer. Furthermore, a method for measuring a winding resistance of windings in delta-connected transformers includes the steps of applying a first and a second measuring current to each one of two corresponding legs, applying a third measuring current between two nodes of a pair of windings on the secondary side and measuring at least a winding resistance of the winding between said nodes on the secondary side of the transformer and/or the winding resistance of a leg of the primary side as soon as an inductive voltage drop in the windings substantially equals zero.

    摘要翻译： 用于测量三角形连接的变压器中的绕组的绕组电阻的装置包括至少一个第一和第二直流电流源，它们分别连接在变压器的初级侧的第一和第二支路的相位端之间，并且至少一个 连接在变压器次级侧的两个节点之间的第三个直流电流源。 此外，用于测量三角形连接变压器中的绕组的绕组电阻的方法包括以下步骤：将第一和第二测量电流施加到两个对应的支路中的每一个上，在一对绕组的两个节点之间施加第三测量电流 次级侧，并且在绕组的感应电压降基本上等于零时，至少测量变压器次级侧上的节点之间的绕组和/或初级侧的绕组的绕组电阻的至少一个绕组电阻。