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169 条记录 (耗时 0.013 秒)

    Auxiliary power supply for high voltage applications
    52.
    发明公开
    Auxiliary power supply for high voltage applications 审中-公开
    Hybride Hilfsstromversorgung

    公开(公告)号：EP2701281A2

    公开(公告)日：2014-02-26

    申请号：EP13180363.7

    申请日：2013-08-14

    申请人： ABB Technology AG

    发明人： Stengel, Gregor ,  Breder, Henrik ,  Skarby, Per ,  Vittor, Timothy

    IPC分类号： H02J11/00

    CPC分类号： H02J11/00 ,  H02M2001/0006

    摘要： An auxiliary power supply system comprises an electric power source (4) at ground potential (G), a power supply circuit (5) at high voltage potential (19), and at least a first and a second insulating transmission link.
    The first (2) and the second (3) insulating transmission links are based on differing energy transmission principles, with the first transmission link (2) making use of a contact-less transmission principle, and the second transmission link (4) being based on transmission of mechanical energy.

    摘要翻译： 辅助电源系统包括接地电位（G）的电源（4），高电压电位（19）的电源电路（5）和至少第一和第二绝缘传输链路。 第一（2）和第二（3）绝缘传输链路基于不同的能量传输原理，第一传输链路（2）利用无接触传输原理，第二传输链路（4）基于 传递机械能。

    ISLANDING DETECTION SYSTEM
    53.
    发明公开
    ISLANDING DETECTION SYSTEM 有权
    系统用于检测ISLAND教育

    公开(公告)号：EP2368303A1

    公开(公告)日：2011-09-28

    申请号：EP09833689.4

    申请日：2009-12-17

    申请人： Whisper Tech Limited

    发明人： KUMAR, Vinod ,  BAKER, Joshua

    IPC分类号： H02H3/00 ,  H02J3/38 ,  H02J11/00

    CPC分类号： H02J3/38 ,  H02J2003/388

    摘要： An islanding detection system for a distributed generator arranged to be connected to an electrical grid comprising a high impedance arm operable to be connected between the phase connection and the neutral connection of the electrical grid, a low impedance arm operable to be connected between the phase connection and the neutral connection of the electrical grid, and a controller arranged to connect the high resistance arm and sense the current through it, and to connect the low resistance arm and sense the current through it, and to disconnect the distributed generator from the electrical grid in the event that the sensed current in the low resistance arm is similar or equal to the sensed current in the high resistance arm.

    SYSTEME D'ALIMENTATION D'AUXILIAIRES POUR STATION DE POMPAGE ALIMENTEE A DISTANCE
    55.
    发明授权
    SYSTEME D'ALIMENTATION D'AUXILIAIRES POUR STATION DE POMPAGE ALIMENTEE A DISTANCE 失效
    供应系统帮助CIRCUITS远程动力泵站

    公开(公告)号：EP0795224B1

    公开(公告)日：2000-03-15

    申请号：EP95941135.6

    申请日：1995-11-23

    申请人： CEGELEC

    发明人： BAERD, Henri

    IPC分类号： H02J11/00

    CPC分类号： H02J11/00

    摘要： A transformer (7) with primary windings (13) connected in series to the pump motor and secondary windings (14) providing a cascaded power supply to a rectifier (15) and a voltage limiter (16, 24) controlling the voltage supplied to the auxiliary equipment by branching off the excess current from said secondary windings.

    A high speed and low drift charge pump circuit
    56.
    发明公开
    A high speed and low drift charge pump circuit 失效
    电荷泵电路以高速度和低漂移。

    公开(公告)号：EP0608151A3

    公开(公告)日：1995-04-19

    申请号：EP94300491.1

    申请日：1994-01-21

    申请人： GENNUM CORPORATION

    发明人： Webster, Stephen

    IPC分类号： H03L7/089 ,  H02M3/07 ,  H02J11/00 ,  G05F3/22 ,  H01L27/02

    CPC分类号： G05F3/22 ,  H02M3/07 ,  H03L7/0896

    摘要： A device for converting binary logic pulses into an output current and the output current being switchable between a positive and negative polarity. The device provides a charge pump circuit which is suitable for the phase-detector stage in a phase-locked loop (PLL) circuit. The charge pump circuit comprises an input stage for the "UP" binary logic pulses and a second stage for the "DOWN" binary logic pulses. The input stages comprise emitted-coupled transistor pairs. The circuit includes current sources and current sinks for generating the output current in the input stages in response to the binary logic pulses. The circuit features a pair of commutating diodes between the outputs of the input stages. The commutating diodes control the output current and the leakage current in the idle state. The circuit also includes a clamping circuit to limit the voltage swing across the commutating diodes. The charge pump circuit according to the present invention exhibits a fast response time, a symmetrical response to the binary logic pulses, and virtually zero leakage current in the idle state. The charge pump circuit utilizes non-complimentary bipolar processes and is suitable for a monolithic integrated circuit implementation.