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    INTERCONNECTING POWER GENERATION SYSTEM
    1.
    发明申请
    INTERCONNECTING POWER GENERATION SYSTEM 审中-公开
    互联发电系统

    公开(公告)号：WO2004054081A3

    公开(公告)日：2004-08-12

    申请号：PCT/JP0315649

    申请日：2003-12-08

    Applicant: EBARA CORP ,  EBARA DENSAN LTD

    Inventor： FURUYA TAI ,  KATAOKA TADASHI ,  MCKELVEY TERENCE ,  MARUI EISHI ,  SATO MOTOYASU ,  OZAWA TAKAHIDE ,  ZHENG SHAOJUN ,  ISHIHARA SEIICHI ,  KINOSHITA NOBORU

    IPC: H02J3/38

    CPC classification number: H02J3/38 ,  H02J2003/388 ,  Y10T307/615

    Abstract: To provide an interconnecting power generation system which can detect an abnormality in the utility power supply and can be isolated from a utility power system (10) and can prevent damage to a turbogenerator. An interconnecting power generation system comprises: an interconnecting inverter (14); a voltage phase shift circuit (20) which synchronizes the output voltage phase of the interconnecting inverter (14) with the utility power voltage phase and monitors zero crossings of the utility power voltage, and which shifts the output voltage phase from the utility power voltage phase and shifts the shifted output voltage phase to the utility power voltage phase; a phase comparator (24) for comparing the voltage phase of the utility power system (10) and the output voltage phase of the interconnecting inverter; and an interconnection control unit (30) which detects a power outage caused by an interruption of power supply from the utility power system (10) based on a series of a predetermined number of matching signals outputted from the phase comparator (24) and sends a control signal to a circuit breaker (22) to shut off the output of the interconnecting inverter (14) from the utility power system (10).

    Abstract translation: 提供能够检测公用电源的异常并且可以与公用电力系统（10）隔离并且可以防止对涡轮发电机的损坏的互连发电系统。 互连发电系统包括：互连逆变器（14）; 电压相移电路（20），其将互连逆变器（14）的输出电压相位与公用电力电压相位同步，并且监视公用电力电压的过零点，并且将公用电源电压相位的输出电压相位 并将移位的输出电压相位移动到公用电源电压阶段; 相位比较器（24），用于比较公用电力系统（10）的电压相位和互连逆变器的输出电压相位; 以及互连控制单元（30），其基于从所述相位比较器（24）输出的一系列预定数量的匹配信号，检测由所述公用电力系统（10）的电力供应中断引起的停电，并发送 控制信号到断路器（22）以将互连逆变器（14）的输出与公用电力系统（10）切断。

    Power supply system
    2.
    发明专利
    Power supply system 未知

    公开(公告)号：AU2003257641A8

    公开(公告)日：2004-03-11

    申请号：AU2003257641

    申请日：2003-08-21

    Applicant: EBARA DENSAN LTD ,  EBARA CORP

    Inventor： MCKELVEY TERENCE ,  MARUI EISHI ,  MIYAMOTO MASAHIRO ,  SATO MOTOYASU ,  KATAOKA TADASHI ,  FURUYA TAI ,  ISHIHARA SEIICHI ,  OZAWA TAKAHIDE ,  KINOSHITA NOBORU ,  ZHENG SHAOJUN

    IPC: H02J3/46 ,  H02M5/458 ,  H02J3/38

    Abstract: A power supply system for supplying power to a load is provided. The system comprises power transmission lines for supplying power to the load, and a plurality of power supply units the outputs of which are parallelly connected to power transmission lines. Each of the power supply unit comprises a generator; an inverter for converting a voltage generated by the generator into an AC voltage and outputting the AC voltage; an inverter control unit for controlling the inverter, and a connection apparatus for connecting the AC voltage outputted from the inverter to the power transmission lines. The inverter controller comprises a load sharing adjuster for adjusting a shared load current supplied from the power supply unit, so that at least one of the power supply units in operation can operated at its rating condition, thereby realizing an efficiency operation.

    POWER SUPPLY SYSTEM
    3.
    发明专利
    POWER SUPPLY SYSTEM 未知

    公开(公告)号：AU2003257641A1

    公开(公告)日：2004-03-11

    申请号：AU2003257641

    申请日：2003-08-21

    Applicant: EBARA CORP

    Inventor： MCKELVEY TERENCE ,  MARUI EISHI ,  MIYAMOTO MASAHIRO ,  SATO MOTOYASU ,  KATAOKA TADASHI ,  FURUYA TAI ,  ISHIHARA SEIICHI ,  OZAWA TAKAHIDE ,  KINOSHITA NOBORU ,  ZHENG SHAOJUN

    IPC: H02J3/46 ,  H02M5/458 ,  H02J3/38

    Abstract: A power supply system for supplying power to a load is provided. The system comprises power transmission lines for supplying power to the load, and a plurality of power supply units the outputs of which are parallelly connected to power transmission lines. Each of the power supply unit comprises a generator; an inverter for converting a voltage generated by the generator into an AC voltage and outputting the AC voltage; an inverter control unit for controlling the inverter, and a connection apparatus for connecting the AC voltage outputted from the inverter to the power transmission lines. The inverter controller comprises a load sharing adjuster for adjusting a shared load current supplied from the power supply unit, so that at least one of the power supply units in operation can operated at its rating condition, thereby realizing an efficiency operation.

    Dispositivo de suministro de agua
    7.
    发明专利
    Dispositivo de suministro de agua 未知

    公开(公告)号：ES2686333T3

    公开(公告)日：2018-10-17

    申请号：ES13843458

    申请日：2013-09-30

    Applicant: EBARA CORP

    Inventor： IKEDA MASAYOSHI ,  TEJIMA TOMOHARU ,  NINOMIYA HIRONORI ,  KINOSHITA NOBORU ,  TAMURA HIROYUKI ,  TATEISHI KAZUFUMI ,  NAKAJIMA KAORU

    IPC: F04D15/00 ,  F04B49/06 ,  F04B49/08 ,  F04B49/10 ,  F04D15/02

    Abstract: Un aparato de suministro de agua que comprende: una bomba (1); un motor (2) configurado para hacer girar la bomba (1); un inversor (3) configurado para aplicar un voltaje que tiene una frecuencia variable al motor (2); una válvula (15) de retención colocada en un lado de descarga de la bomba (1); un sensor (16) de presión en el lado de descarga configurado para medir una presión en el lado de descarga de la bomba (1) en un lado de descarga de la válvula (15) de retención; y un controlador (5, 10) configurado para realizar un control de retroalimentación para controlar una velocidad de rotación de la bomba (1) a través del motor (2) y el inversor (3) a base de un valor medido de la presión en el lado de descarga de la bomba (1) para mantener la presión en el lado de descarga a una presión objetivo predeterminada, caracterizado porque el controlador (5, 10) está configurado para almacenar en el mismo un primer valor límite inferior de la velocidad de rotación que es superior a una velocidad de rotación de corte, y un segundo valor límite inferior de la velocidad de rotación que es inferior a la velocidad de rotación de corte, siendo la velocidad de rotación de corte una velocidad de rotación requerida para alcanzar la presión objetivo en un estado de corte, y el controlador (5, 10) está configurado para conmutar un límite inferior de un valor de comando de la velocidad de rotación de la bomba (1) desde el primer valor límite inferior al segundo valor límite inferior si el valor de comando de la velocidad de rotación de la bomba (1) no ha sido superior al primer valor límite inferior de manera continua durante un tiempo de confirmación predeterminado, y determinar que la bomba (1) está en un estado de bajo caudal si el valor de comando de la velocidad de rotación de la bomba (1) es igual o inferior a la velocidad de rotación durante un tiempo de detección predeterminado.

    CONTACT SIGNAL INPUT CIRCUIT
    10.
    发明专利
    CONTACT SIGNAL INPUT CIRCUIT 失效

    公开(公告)号：JP2001023470A

    公开(公告)日：2001-01-26

    申请号：JP19046399

    申请日：1999-07-05

    Applicant: EBARA CORP ,  EBARA DENSAN LTD

    Inventor： OHATA SHIGEO ,  KAWANISHI TAKU ,  ISHIHARA SEIICHI ,  KINOSHITA NOBORU

    IPC: H01H9/54

    Abstract: PROBLEM TO BE SOLVED: To provide a contact signal input circuit capable of removing a covering film from a contact even when the power supply has small capacity and generating a contact feed current certainly every time the contact is closed. SOLUTION: When a contact S1 is connected and closed, signal is fed with the current flowing in this contact S1. In this contact signal input circuit 10, a capacitor C1 is installed to be charged when the contact S1 is opened and the current is discharged from the capacitor via the contact when it is closed.

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