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31 条记录 (耗时 0.015 秒)

    Replicated controller and fault recovery method thereof
    3.
    发明公开
    Replicated controller and fault recovery method thereof 失效
    RepliziertesSteuergerätund Fehlerkorrekturverfahrendafür

    公开(公告)号：EP0866389A2

    公开(公告)日：1998-09-23

    申请号：EP98301664.3

    申请日：1998-03-06

    申请人： HITACHI, LTD.

    发明人： Shimamura, Kotaro ,  Morita, Yuuichiro ,  Takahashi, Yoshitaka ,  Hotta, Takashi ,  Satou, Hiroyasu ,  Ueda, Shigeta ,  Bando, Akira ,  Suzuki, Hirokazu ,  Sakamoto, Koji

    IPC分类号： G05B9/03 ,  G06F11/18

    CPC分类号： G06F11/182 ,  G05B9/03 ,  G06F11/184 ,  G06F11/188 ,  Y10S707/99953

    摘要： A replicated controller and a fault recovery method therefor which can restore a faulty system to a normal state without interrupting operation of an equipment, even in an equipment controller performing processing with short operating periods.
    In a fault recovery method for a replicated controller, control data is divided into a plurality of blocks on the basis of dependency of the blocks, and a plurality of blocks are transferred in a sequential order of superiority of the dependency from the normally operating system to the faulty system in a period over a plurality of operating periods. BY this, even in an equipment controller performing processing at a short operating period, the system, in which failure is caused, can be restored into normal state without interrupting operation of the equipment.

    摘要翻译： 复制控制器及其故障恢复方法，即使在执行短操作周期的处理的设备控制器中，也可以将故障系统恢复到正常状态而不中断设备的操作。 在复制控制器的故障恢复方法中，基于块的依赖性将控制数据划分为多个块，并且以从依赖关系的正常操作系统的优越性的顺序传送多个块到 在多个操作期间内的故障系统。 由此，即使是在短时间内进行处理的设备控制器中，也可以在不中断设备的运转的情况下将导致故障的系统恢复到正常状态。

    Control system for variable speed hydraulic turbine generator apparatus
    4.
    发明公开
    Control system for variable speed hydraulic turbine generator apparatus 失效
    变速液压涡轮发电机装置控制系统

    公开(公告)号：EP0220492A3

    公开(公告)日：1988-06-22

    申请号：EP86113077

    申请日：1986-09-23

    申请人： HITACHI, LTD. ,  THE KANSAI ELECTRIC POWER CO., INC.

    发明人： Haraguchi, Eiji ,  Nakagawa, Hiroto ,  Bando, Akira ,  Kuwahara, Takao ,  Nohara, Haruo ,  Ono, Kenichi

    IPC分类号： H02P09/42 ,  H02P09/04

    CPC分类号： H02P9/007 ,  H02P9/42

    摘要： A control system for variable speed hydraulic turbine generator apparatus comprises an induction gene­rator (l) connected at its primary side (la) to an AC power line system (4), a secondary excitation controller (3) connected to the secondary side (lb) of the induction generator (l) and being responsive to a generator output command signal (Po) supplied externally to supply to the induction generator (l) an excitation current which causes the induction generator (l) to generate AC power at the same frequency as that on the AC power line system (4), a hydraulic turbine (2) for rotating the induction generator (l), a guide valve (ll) for regulating the amount of water supplied to the hydraulic turbine (2), a rotation speed detector (6) for detecting a rotation speed of the induc­tion generator (l), a rotation speed command calculator (l5) for receiving a hydraulic turbine running condition signal (Po, H) inclusive of the external generator output command signal (Po) and calculating an optimum rotation speed command (Na), a rotation speed controller (l6) for comparing the optimum rotation speed command (Na) with a rotation speed signal (N) from the rotation speed detector (6) and producing a guide valve opening control signal (Ya) in accordance with a difference (ΔN) between the optimum rotation speed command (Na) and the rotation speed signal (N), and a guide valve driver (l0) responsive to the guide valve opening control signal (Ya) to deliver to the guide valve (ll) a signal which controls the opening of the guide valve (ll) in accordance with the guide valve opening control signal (Ya).

    Power conversion apparatus and control method thereof
    5.
    发明公开
    Power conversion apparatus and control method thereof 审中-公开
    电力变换装置和控制方法

    公开(公告)号：EP2728722A2

    公开(公告)日：2014-05-07

    申请号：EP13181750.4

    申请日：2013-08-27

    申请人： Hitachi Ltd.

    发明人： Inoue, Shigenori ,  Katoh, Shuji ,  Bando, Akira ,  Kiyofuji, Yasuhiro ,  Eguchi, Yoshio ,  Ichinose, Masaya ,  Yamamoto, Takayoshi

    IPC分类号： H02M1/00

    CPC分类号： H02M7/2173 ,  H02M5/10 ,  H02M5/4585 ,  H02M7/483 ,  H02M7/5388 ,  H02M2007/4835

    摘要： In the present invention, provided is a power conversion apparatus (102) in which at least one energy storage element and at least one switching element are included, a plurality of series circuits of a transformer winding and an arm (104U, 104V, 104W) in which one or a plurality of at least two-terminal unit converters (105) which depend on ON/OFF of the switching element and supply a zero voltage or a voltage depending on a voltage of the energy storage element are connected in series are connected in parallel, and a multi-phase power source or a multi-phase load is connected to another winding of the transformer (103), and the parallel-connection point is set as a DC terminal, and which includes means (106) for controlling a current flowing through each of the arms (104U, 104V, 104W) to have a phase and amplitude different from each other.

    Semiconductor eletric power conversion system
    7.
    发明公开
    Semiconductor eletric power conversion system 失效
    半导体电力转换系统

    公开(公告)号：EP0388850A3

    公开(公告)日：1990-12-19

    申请号：EP90105135.9

    申请日：1990-03-19

    申请人： HITACHI, LTD. ,  THE KANSAI ELECTRIC POWER CO., INC.

    发明人： Bando, Akira ,  Tanaka, Chikara ,  Saito, Keiji ,  Kawai, Tadao ,  Kita, Eizo, c/o The Kansai Eletric Power Co., Inc. ,  Mitsuhashi, Keiichi Kansai Elec.Power Co.Inc ,  Ohno, Yasuteru, c/o The Kansai Elec. Power Co.,Inc ,  Nakagawa, Hiroto, c/o The Kansai Elec.Power Co.Inc

    IPC分类号： H02H7/125 ,  H02M7/162 ,  H02M7/525

    CPC分类号： H02M7/1623 ,  H02H7/1255

    摘要： An improved electric power conversion system comprising a multi-phase bridge circuit (3) is composed of semiconductors such as thyristors (TY1...TY6) and an associated firing cir­cuit (31). It is so constructed that: if the AC input current Iac flowing in said bridge circuit (3) is equal to or larger in value than the DC output current Idc flowing out of the bridge circuit, it will be decided that an inner defect or fault is caused, and possible expansion of inner defect will be prevented by disabling the firing circuit (31) to ex­tinguish said thyristors in the bridge circuit, and if the AC input current Iac is smaller than the DC output current Idc in value, the bridge (3) is permitted to continue the operation of power conversion, thus eliminating unnecessary interruption which otherwise would be caused by exterior disturbances. Also, an improved electric power conversion system may be equipped with a device to prevent an adverse effect from being caused by abnormal rise of thyristors' temperature.

    摘要翻译： 包括多相电桥电路（3）的改进的电力转换系统由诸如晶闸管（TY1 ... TY6）的半导体和相关联的触发电路（31）组成。 其构造为：如果在所述桥式电路（3）中流动的AC输入电流Iac等于或大于流出桥式电路的DC输出电流Idc的值，则将确定内部缺陷或故障 并且通过禁止点火电路（31）熄灭桥式电路中的所述晶闸管可防止内部缺陷的扩展，并且如果AC输入电流Iac小于DC输出电流Idc的值，则桥路（ 3）允许继续进行功率转换操作，从而消除由外部干扰引起的不必要的中断。 而且，改进的电力转换系统可以配备有装置以防止由晶闸管温度的异常升高引起的不利影响。

    Variable speed pump-up control method and apparatus
    8.
    发明公开
    Variable speed pump-up control method and apparatus 失效
    Regelverfahren undGerätzum Regeln eines Pumpsystems mitveränderbarerDrehzahl。

    公开(公告)号：EP0221244A2

    公开(公告)日：1987-05-13

    申请号：EP86109994.3

    申请日：1986-07-21

    申请人： HITACHI, LTD. ,  THE KANSAI ELECTRIC POWER CO., INC.

    发明人： Haraguchi, Eiji ,  Nakagawa, Hiroto ,  Nohara, Haruo ,  Goto, Masuo ,  Kuwahara, Takao ,  Bando, Akira ,  Ono, Kenichi

    IPC分类号： H02P7/635

    CPC分类号： H02P9/008 ,  H02P9/007 ,  H02P2101/10 ,  H02P2207/01

    摘要： A method and an apparatus for stable controlling toward a target value during AFC (automatic frequency control) operation for pumping-up in a variable speed dynamo system. The phase angle of the secondary exciting voltages is controlled using the difference between a power control command and an actual power level. For controlling the guide vane opening (Y), the actual revolution number is utilized. Thus, on the basis of an actual value of the revolution number (N) and a lift head (H), the guide vane opening is so controlled that a predetermined optimum can be reached, and hence the dynamo system may be operated under the input, revolution number and guide vane opening which are determined by the power control command. This ensures that the variable speed dynamo system can run with high stability and high efficiency, attaining highly economical effects.

    摘要翻译： 一种用于在用于在变速发电机系统中进行泵送的AFC（自动频率控制）操作期间稳定地控制目标值的方法和装置。 使用功率控制指令和实际功率电平之间的差来控制次级激励电压的相位角。 为了控制导叶开度（Y），利用实际的转数。 因此，基于转数（N）和提升头（H）的实际值，导向叶片开度受到控制，使得能够达到预定的最优值，因此发电机系统可以在输入下操作 ，转数和导叶开度由功率控制指令决定。 这样可以确保变速发电系统能够以高稳定性和高效率运行，达到高效经济效果。

    Voltage source converter and method for controlling the converter
    10.
    发明公开
    Voltage source converter and method for controlling the converter 审中-公开
    电压源换流器和用于控制换流器的方法

    公开(公告)号：EP2685621A3

    公开(公告)日：2018-03-07

    申请号：EP13003491.1

    申请日：2013-07-10

    申请人： Hitachi, Ltd.

    发明人： Yamamoto, Takayoshi ,  Ichinose, Masaya ,  Bando, Akira ,  Inoue, Shigenori ,  Yoshihara, Toru

    IPC分类号： H02M7/483

    CPC分类号： H02M5/44 ,  H02M7/483 ,  H02M2007/4835

    摘要： A control apparatus for use with a voltage source converter (102) includes legs (104) each of which is configured by a plurality of converter modules (108) each having capacitors (203). Each of the legs has a first terminal on a positive side and a second terminal on a negative side. The control apparatus is operative to create command pulses for operating the converter modules to operate the converter modules. The command pulses have a frequency that is a non-integral multiple of a frequency of a system voltage (VGR, VGS, VGT). The non-integral multiple is 3.5, for example.

    摘要翻译： 与电压源转换器（102）一起使用的控制装置包括腿（104），每个腿由多个转换器模块（108）构成，每个转换器模块具有电容器（203）。 每个腿部具有正侧上的第一端子和负侧上的第二端子。 控制装置可操作以产生用于操作转换器模块以操作转换器模块的命令脉冲。 指令脉冲的频率是系统电压频率（VGR，VGS，VGT）的非整数倍。 例如，非整数倍数是3.5。