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    Ac generator system including differential protection of exciter
    2.
    发明授权
    Ac generator system including differential protection of exciter 失效
    交流发电机系统，包括差分保护的发电机系统

    公开(公告)号：US3705331A

    公开(公告)日：1972-12-05

    申请号：US3705331D

    申请日：1972-03-16

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： SOUTH WILLIAM H ,  DILLMAN THAYER L

    IPC: H02H7/06

    CPC classification number: H02H7/065

    Abstract: A differential protection system is connected to detect and indicate faults in an exciter by comparing signals developed from the exciter field and from the generator armature. A first signal is developed representing the magnitude of the voltage on the exciter field winding and a second signal is developed representing the vectorial sum of the current and voltage on the armature winding. These signals are compared and a fault indication produced when the magnitude of their difference is at least of a certain value. The differential protection in brushless exciters permits avoiding the use of a fuse in series with each diode of a rotating rectifier.

    Circuit breaker including improved overcurrent protective circuit
    4.
    发明授权
    Circuit breaker including improved overcurrent protective circuit 失效
    断路器包括改进的过流保护电路

    公开(公告)号：US3654519A

    公开(公告)日：1972-04-04

    申请号：US3654519D

    申请日：1971-02-18

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： SOUTH WILLIAM H

    IPC: H02H3/093 ,  H01H47/18

    CPC classification number: H02H3/093

    Abstract: An overcurrent protective circuit or means comprising static solid state non-linear elements connected in parallel with an input signal conditioning means such that an overload current in a protected circuit is sensed by the input signal conditioning means and then converted into a signal which is applied simultaneously to each of the non-linear elements. An output current which is directly proportional to or varies with the value of overcurrent in the protected circuit is generated by each non-linear element after the overload current exceeds predetermined values which may be different for the respective non-linear elements. The output from each of the non-linear elements, is supplied to a corresponding associated modulating means such as an oscillator, multivibrator or current generator. These modulating means combine to generate a current signal that is proportional to the overload current in the protected circuit raised to some power N where N is related to the number of modulating means. This current is then applied to charge a capacitor which effectively integrates the current with respect to time. Integration converts the charging current into a voltage signal which is directly proportional to the Nth power of the overload current in the protected circuit. The voltage signal is then compared with a reference or threshold voltage in a trigger circuit and when it exceeds the reference voltage, a signal is generated by the trigger circuit which actuates a circuit breaker tripping means causing the circuit breaker protecting the aforementioned circuit to open or trip.

    Abstract translation: 一种过电流保护电路或包括与输入信号调节装置并联连接的静态固态非线性元件的装置，使得受保护电路中的过载电流由输入信号调节装置感测，然后转换成同时施加的信号 到每个非线性元件。 在过载电流超过对于各个非线性元件可能不同的预定值之后，由每个非线性元件产生与受保护电路中的过电流值成正比或随其变化的输出电流。 来自每个非线性元件的输出被提供给相应的相关联的调制装置，例如振荡器，多谐振荡器或电流发生器。 这些调制装置组合起来产生一个电流信号，该电流信号与被保护电路中的过载电流成比例地升高到一些功率N，其中N与调制装置的数量有关。 然后施加该电流以对电流相对于时间有效地积分的电容器进行充电。 积分将充电电流转换为与受保护电路中的过载电流的第N次方成正比的电压信号。 然后将电压信号与触发电路中的参考电压或阈值电压进行比较，并且当其超过参考电压时，由触发电路产生信号，触发电路致动断路器跳闸装置，使断路器保护上述电路打开或 旅行

    Fast response frequency and wave shape measuring circuit
    6.
    发明授权
    Fast response frequency and wave shape measuring circuit 失效
    快速响应频率和波形测量电路

    公开(公告)号：US3590277A

    公开(公告)日：1971-06-29

    申请号：US3590277D

    申请日：1969-05-07

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： SOUTH WILLIAM H

    IPC: G01R23/02 ,  G04F10/00 ,  H03K5/20

    CPC classification number: G04F10/00 ,  G01R23/02

    Abstract: A measuring network in which a ramp generator is energized throughout each alternate half cycle of the frequency to be measured and in which the ramp generator is reset to an initial potential during each of the intervening half cycles whereby the change in potential of the ramp generator is a measure of the half cycle interval and consequently of the frequency when the wave shape remains constant, a measure of changes in wave shape of the cycle when the frequency is constant, and a measure of the frequency regardless of the wave shape when the output quantities of two such networks are summed; one such network measuring the interval of one half cycle and the other measuring the interval of the other half cycle.

    Regulated exciter-generator electrical power apparatus responsive to exciter field current
    8.
    发明授权
    Regulated exciter-generator electrical power apparatus responsive to exciter field current 失效
    对EXCITER现场电流的调节发电机电力设备

    公开(公告)号：US3652920A

    公开(公告)日：1972-03-28

    申请号：US3652920D

    申请日：1970-12-03

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： SOUTH WILLIAM H ,  KEAY FREDERICK W

    IPC: H02P9/36

    CPC classification number: H02P9/36 ,  Y10S322/02

    Abstract: Regulated electric power apparatus including a dynamoelectric machine and exciter. A control feedback loop responsive to the parameter to be regulated is modified by a supplementary negative feedback loop responsive to the exciter field current, which forces current into the field and reduces the effective exciter time constant.

    Abstract translation: 包括电动机和励磁机的调压电力装置。 响应于要调节的参数的控制反馈回路由响应于励磁机励磁电流的辅助负反馈环路来修改，该励磁电流迫使电流进入励磁电流并降低有效的励磁机时间常数。

    Static antipump circuit breaker closing system
    9.
    发明授权
    Static antipump circuit breaker closing system 失效
    静态电路断路器闭合系统

    公开(公告)号：US3644790A

    公开(公告)日：1972-02-22

    申请号：US3644790D

    申请日：1970-03-25

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： KOZLOVIC JOHN M ,  SOUTH WILLIAM H

    IPC: H02H7/22 ,  H02H11/00 ,  H02H1/00

    CPC classification number: H02H11/005 ,  H02H7/224

    Abstract: The use of a charged capacitor in conjunction with the closing switch associated with a circuit breaker such that when the closing switch is closed, the capacitor discharges through the switch and the primary of a pulse transformer creating a pulse in the secondary of the transformer which, in turn, is used to gate a solid-state control device such as a triac or silicon controlled rectifier. The cathode and anode of the solid-state control device is in electrical series with the closing switch and the spring release coil of the circuit breaker, such that when the previously mentioned pulse is applied it causes the solid-state device to turn on and conduct current through the spring release coil thus actuating the closing of the circuit breaker. In the event the circuit breaker immediately reopens because of a fault in the protected circuit or a similar circumstance, the circuit breaker will not reclose again until the depressed closing switch is opened, thus allowing the aforementioned capacitor to recharge.

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