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63 条记录 (耗时 0.016 秒)

    Tap changing assembly for power transformer
    1.
    发明授权
    Tap changing assembly for power transformer 有权
    电动变压器分接组件

    公开(公告)号：US06965217B2

    公开(公告)日：2005-11-15

    申请号：US10790326

    申请日：2004-02-27

    申请人： Dieter Dohnal ,  Karsten Viereck

    发明人： Dieter Dohnal ,  Karsten Viereck

    IPC分类号： H01H9/16 ,  G05F1/153

    CPC分类号： H01H9/168 ,  H01H2009/0061

    摘要： A tap changing assembly for power transformers having vacuum interrupters each of which is associated with a radio interrogated surface wave sensor capable of detecting whether the respective vacuum interrupter opens circuit in a timely manner. The sensors are interrogated by an interrogating unit transmitting high-frequency signals to the sensors and associated with a monitoring circuit responsive to signals received by the interrogating unit for signalling the status of the vacuum interrupter.

    摘要翻译： 一种用于具有真空断路器的电力变压器的抽头变换组件，每个组件与能够检测各个真空断路器是否及时打开电路的无线电询问表面波传感器相关联。 传感器被询问单元询问，该询问单元响应于由询问单元接收的信号向传感器发送高频信号并与监视电路相关联，以用于发信号通知真空断续器的状态。

    Voltage regulator compensation in power distribution circuits
    2.
    发明授权
    Voltage regulator compensation in power distribution circuits 失效
    配电电路中的稳压器补偿

    公开(公告)号：US5055766A

    公开(公告)日：1991-10-08

    申请号：US532599

    申请日：1990-06-04

    申请人： Brian McDermott ,  Robert L. Morgan

    发明人： Brian McDermott ,  Robert L. Morgan

    IPC分类号： G05F1/153

    CPC分类号： G05F1/153

    摘要： An electronic device for compensating voltage fluctuations in an electrical power distribution circuit controls operation of a transformer of the type having a TCUL voltage regulator by automatically calculating the voltage bandwidth of the transformer based upon a stored value for peak current in the distribution circuit. The peak current value is automatically updated when the actual current in the circuit exceeds the stored peak current value for a predetermined sustained period of time indicating a change in overall loading patterns in the circuit but, regardless of increases in actual current in the distribution circuit, the apparatus prevents the output voltage from exceeding a preset absolute maximum.

    摘要翻译： 用于补偿电力分配电路中的电压波动的电子设备通过基于分配电路中的峰值电流的存储值自动计算变压器的电压带宽来控制具有TCUL电压调节器的类型的变压器的操作。 当电路中的实际电流超过存储的峰值电流值一段预定的持续时间段，表示电路中的总体负载模式的变化时，峰值电流值被自动更新，但不管分配电路中实际电流的增加如何， 该装置防止输出电压超过预设的绝对最大值。

    Impressed current cathodic protection
    3.
    发明授权
    Impressed current cathodic protection 失效
    电流阴极保护

    公开(公告)号：US4147608A

    公开(公告)日：1979-04-03

    申请号：US836543

    申请日：1977-09-26

    申请人： John E. Stevens

    发明人： John E. Stevens

    IPC分类号： C23F13/00 ,  C23F13/04 ,  G05F1/153

    CPC分类号： C23F13/04 ,  G05F1/153

    摘要： An impressed current cathodic protection apparatus has an electromechanically actuated variable transformer providing a variable output voltage and shunt-connected current monitors to monitor the impressed current and to vary the transformer turns ratio to maintain the impressed current within a predetermined range of values.

    摘要翻译： 外加电流阴极保护装置具有机电致动的可变变压器，其提供可变输出电压和分流连接的电流监视器以监视外加电流并改变变压器匝数比以将外加电流保持在预定值范围内。

    Low cost voltage regulating relay
    4.
    发明授权
    Low cost voltage regulating relay 失效
    低成本电压调节继电器

    公开(公告)号：US3895287A

    公开(公告)日：1975-07-15

    申请号：US47533474

    申请日：1974-05-30

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： SUN SHAN C ,  VERCELLOTTI LEONARD C

    IPC分类号： G05F1/153 ,  G05F1/00

    CPC分类号： G05F1/153

    摘要： A voltage regulating relay in which the dead-band voltage width is determined by the amplification of the difference or error signal supplied to a comparator which maintains constant upper and constant lower comparing voltages.

    摘要翻译： 一种电压调节继电器，其中死区电压宽度由提供给比较器的差分或误差信号的放大确定，该比较器保持恒定的上部和恒定的较低比较电压。

    Voltage regulator error detection and correction
    10.
    发明授权
    Voltage regulator error detection and correction 有权

    公开(公告)号：US10890933B2

    公开(公告)日：2021-01-12

    申请号：US16591739

    申请日：2019-10-03

    申请人： NXP B.V.

    发明人： Jan-Peter Schat

    IPC分类号： G05F1/575 ,  G05F1/153 ,  G05F1/565 ,  G05F1/567

    摘要： The disclosure relates to voltage regulators and more specially voltage regulators including error detection and correction mechanisms. Example embodiments include a voltage regulator comprising: an input arranged to receive a trim signal used to specify a target voltage at an output of the regulator; a comparator arranged to compare a voltage derived from the trim signal to the voltage at the output of the regulator; a filter arranged to filter an output of the comparator; a checksum module comprising first and second portions arranged to calculate first and second checksums respectively from a plurality of states associated with the voltage regulator and to provide an error signal equal to the difference between the first and second checksums; and an adjustment module arranged to receive the error signal and adjust one or more of the plurality of states if the error signal is non-zero.