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    • 12. 发明申请
    • Tap Change Operation Monitoring Apparatus for On-Load Tap Changer
    • 用于有载分接开关的变换操作监控装置
    • US20080129524A1
    • 2008-06-05
    • US11793813
    • 2006-04-27
    • Daisuke KondoHideo Shinohara
    • Daisuke KondoHideo Shinohara
    • G08B21/00
    • H02P13/06H01F29/04H01H2009/0061Y10T307/297
    • It is intended to provide a tap change operation monitoring apparatus for an on-load tap changer which can employ relatively simple and low-cost torque sensing means by mitigating an accuracy requirement with regard to detecting a starting time of tap change operation, acquire torque waveform data concerning tap change operation of a diverter switch in an accurate and reliable fashion, and discriminate an abnormal state of the tap change operation with high accuracy. There is provided waveform processing means 47 including a third low-pass filter 70 for generating processed torque waveform data by removing noise components from torque waveform data, first and second low-pass filters 71, 72 having cutoff frequencies lower than a cutoff frequency of the third low-pass filter 70 for generating shaped torque waveform data, and first and second differentiators 73, 74, a multiplier 75 and a maximal value extractor circuit 76 for together extracting time of occurrence of an extremum of a waveform obtained by differentiating the shaped torque waveform data in the time domain within a specific time period as reference operating time.
    • 旨在提供一种用于有载分接开关的分接变换操作监视装置,其可以采用相对简单和低成本的扭矩传感装置,通过减轻关于检测分接变换操作的启动时间的精度要求,获取转矩波形 关于切换开关的分接变换操作的数据以精确可靠的方式进行的数据,并且高精度地识别分接变换操作的异常状态。 提供了波形处理装置47,该波形处理装置47包括:第三低通滤波器70,用于通过从转矩波形数据中去除噪声分量来产生处理的转矩波形数据;第一低通滤波器71和第二低通滤波器72具有低于截止频率的截止频率 用于产生成形扭矩波形数据的第三低通滤波器70,以及第一和第二微分器73,74,乘法器75和最大值提取器电路76,用于一起提取通过对成形扭矩进行微分而获得的波形的极值出现时间 在特定时间段内的时域中的波形数据作为参考操作时间。
    • 16. 发明授权
    • Non-dissipative current distribution circuit for magnetohydrodynamic
generator electrodes
    • 用于磁流体动力发电机电极的非耗散电流分配电路
    • US4608627A
    • 1986-08-26
    • US746902
    • 1985-06-20
    • James F. Holt
    • James F. Holt
    • H02P13/06H02M3/315H02M3/337
    • H02P13/06
    • A nondissipative current distribution circuit for a power source, such as magnetohydrodynamic generator, that delivers its output current through a first plurality of positive electrodes and a second plurality of negative electrodes (including plural positive and negative electrode pairs) and provides a predetermined current distribution among the electrodes, is described, and comprises a transformer including first and second windings, the second winding including means for connection to a load, the first winding having plural adjustable taps intermediate its ends, an inductor connected at one end to one end of the first transformer winding and at the other end to a plurality of capacitors connected respectively to each electrode, and a first plurality of silicon controlled rectifiers connected, respectively, between each positive electrode and a tap or the second end of the first transformer winding, and a second plurality of silicon controlled rectifiers connected, respectively, between each negative electrode and a tap or the second end of the first transformer winding, the first plurality of rectifiers configured to conduct alternately with the second plurality of rectifiers. In alternative embodiments, mechanical switches are connected between each electrode and tap or winding end, all switches configured to operate in unison, with an RC filter connected across each switch; or a silicon controlled rectifier switch is connected between each electrode and tap or winding end, all switches configured to operate in unison, with a commutating circuit connected across each rectifier switch.
    • 一种用于诸如磁流体动力发生器的电源的无耗散电流分配电路,其通过第一多个正电极和第二多个负极(包括多个正电极对和负电极对)传递其输出电流,并且提供预定的电流分布 电极,并且包括包括第一和第二绕组的变压器,第二绕组包括用于连接到负载的装置,第一绕组在其端部之间具有多个可调节抽头,电感器在一端连接到第一和第二绕组的一端 变压器绕组,另一端连接到分别连接到每个电极的多个电容器,以及分别连接在每个正电极和第一变压器绕组的抽头或第二端之间的第一多个可控硅整流器, 分别连接多个可控硅整流器 衰减每个负电极和第一变压器绕组的抽头或第二端,所述第一多个整流器被配置为与所述第二多个整流器交替地导通。 在替代实施例中,机械开关连接在每个电极和抽头或绕组端之间,所有开关被配置为一致地操作,RC滤波器连接在每个开关上; 或者可控硅整流开关连接在每个电极和抽头或绕组端之间,所有开关配置为一致工作,每个整流开关连接有换向电路。
    • 17. 发明授权
    • Transformer for the controllable shifting of the phase angle of output
voltages in relation to the phase angles of input voltages
    • 变压器,用于相对于输入电压的相位角可控地移动输出电压的相位角
    • US4336488A
    • 1982-06-22
    • US168494
    • 1980-07-14
    • Hans GlavitschGerhard Guth
    • Hans GlavitschGerhard Guth
    • H02P13/06H03K3/352
    • H02P13/06
    • A transformer which is suitable for connecting with a compound network and renders possible shifting the phase angle of the secondary side-output voltage in relation to the primary side-input voltage. The secondary windings are divided into winding stages and there are provided lines and switches, by means of which these winding stages can be selectively connected in series. Since the phase angle of the voltage in each winding stage coincides with the angle of the corresponding winding, it is possible to vectorially add in this manner partial voltages with different phase angles, so that at the output terminal of one winding there appears a composite voltage whose phase angle is aligned in the same direction as said one winding or, in relation to such direction, is shifted through a predetermined angle value in clockwise direction or in counterclockwise direction.
    • 一种适于与复合网络连接的变压器,并且可以相对于初级侧输入电压移动次级侧输出电压的相位角。 次级绕组被分为绕组段,并且设有线路和开关,通过它们可以选择性地串联这些绕组级。 由于每个绕组中的电压的相位角与相应的绕组的角度一致,所以可以以这种方式以不同的相位角向量地相加部分电压,使得在一个绕组的输出端处出现复合电压 其相位角在与所述一个绕组相同的方向上或者相对于该方向在顺时针方向或逆时针方向上偏移预定的角度值。