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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
    5.
    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
    6.
    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.

    Power converter for driving pump
    8.
    发明专利
    Power converter for driving pump 有权
    电动转换器驱动泵

    公开(公告)号：JP2013201850A

    公开(公告)日：2013-10-03

    申请号：JP2012069261

    申请日：2012-03-26

    Applicant: Ebara Corp ,  株式会社荏原製作所

    Inventor： TSUKAGOSHI KENTA ,  KOMAI MASAKAZU ,  OZAWA TAKAHIDE ,  HATABAYASHI KIMI

    IPC: H02P27/06

    Abstract: PROBLEM TO BE SOLVED: To provide a power converter which can perform protective operation when a power converter is actuated by an induction voltage generated from a synchronous motor, in a pump system being driven by the synchronous motor.SOLUTION: A control power supply 18 generates a low voltage DC power from a DC power generated by a DC voltage smoothing circuit 14, and an MCU 15 is driven by receiving the low voltage DC power supply from the control power supply 18. In order to determine whether the DC power stored in the DC voltage smoothing circuit 14 is input from a commercial power supply 1 or generated from a motor M, the MCU 15 compares an input voltage obtained from an input voltage measuring instrument 22 with a predetermined starting voltage of the control power supply 18. When a determination is made that the power converter is actuated by a power generated from the motor M, the MCU 15 performs a protective operation.

    Abstract translation: 要解决的问题：提供一种功率转换器，其在由同步电动机驱动的泵系统中由功率转换器由同步电动机产生的感应电压驱动时可以执行保护操作。解决方案：控制电源18产生 来自直流电压平滑电路14产生的直流电力的低压直流电力和MCU 15通过从控制电源18接收低压直流电源来驱动。为了确定存储在 直流电压平滑电路14从商用电源1输入或从电动机M产生，MCU 15将从输入电压测量仪22获得的输入电压与控制电源18的预定起动电压进行比较。当确定 通过由电动机M产生的电力来驱动电力转换器，MCU15进行保护动作。

    Power supply unit, and method for synchronously operating power conversion device
    9.
    发明专利
    Power supply unit, and method for synchronously operating power conversion device 审中-公开
    电源单元以及用于同步操作电力转换装置的方法

    公开(公告)号：JP2008043184A

    公开(公告)日：2008-02-21

    申请号：JP2007138054

    申请日：2007-05-24

    Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

    Inventor： KATAOKA TADASHI ,  SAKATA SHIGERU ,  OZAWA TAKAHIDE ,  TSUKAGOSHI ISAO ,  TAI MASA

    IPC: H02M7/00

    Abstract: PROBLEM TO BE SOLVED: To provide a power supply unit suited for a power supply system that performs parallel operation of a plurality of unitized power supply devices, formed from generators and power converters. SOLUTION: This power supply device includes a generator, a power converter for converting power generated by the generator into AC power at a required frequency and voltage, and a controller for the power converter. The controller is provided with a control section with output voltage-output current characteristics for determining the output voltage, corresponding to the output current of the power converter. The output voltage-output current characteristics include a first drooping characteristic for limiting the output power of the generator between a first output current that exceeds the generation capacity of the generator and a second output current beyond the conversion capacity of the power converter. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种适用于由发电机和电力转换器形成的多个单元化电力供应装置的并行运行的电源系统的电源装置。 解决方案：该电源装置包括发电机，用于将发电机产生的电力以所需频率和电压转换为交流电的功率转换器，以及用于功率转换器的控制器。 该控制器具有控制部分，具有用于确定与功率转换器的输出电流相对应的输出电压的输出电压 - 输出电流特性。 输出电压 - 输出电流特性包括用于在超过发电机的发电量的第一输出电流和超过功率转换器的转换容量的第二输出电流之间限制发电机的输出功率的第一下垂特性。 版权所有（C）2008，JPO＆INPIT

    Pump control device
    10.
    发明专利
    Pump control device 有权
    泵控制装置

    公开(公告)号：JP2014043800A

    公开(公告)日：2014-03-13

    申请号：JP2012186063

    申请日：2012-08-27

    Applicant: Ebara Corp ,  株式会社荏原製作所

    Inventor： HATABAYASHI KIMI ,  KOMAI MASAKAZU ,  OZAWA TAKAHIDE ,  TSUKAGOSHI KENTA

    IPC: F04B49/06 ,  F04D15/00

    Abstract: PROBLEM TO BE SOLVED: To provide a pump control device in which an additional inverter device can be easily installed at low cost and that can continue pump operation even if a state quantity measuring device such as a pressure sensor fails.SOLUTION: A first inverter device VFD1 functions as a master device that generates a control signal to control the operation of motor pumps MP1 and MP2 on the basis of a state quantity measured by a first state quantity measuring device DP1, and a second inverter device VFD2 functions as a slave device that receives the control signal to drive the motor pump MP2 connected to the second inverter device VFD2. When an abnormality occurs in the first inverter device VFD1 or the first state quantity measuring device DP1, the second inverter device VFD2 functions as a master device, and the first inverter device VFD1 functions as a slave device.

    Abstract translation: 要解决的问题：提供一种泵控制装置，其中可以以低成本容易地安装附加的逆变器装置，并且即使诸如压力传感器的状态量测量装置失效也可以继续泵运行。解决方案：第一逆变器装置 VFD1作为主装置，根据由第一状态量测量装置DP1测定的状态量，产生控制信号，控制电动泵MP1，MP2的动作，第二变换装置VFD2作为从动装置， 接收控制信号以驱动连接到第二逆变器装置VFD2的电动泵MP2。 当第一逆变器装置VFD1或第一状态量测量装置DP1发生异常时，第二逆变器装置VFD2用作主装置，第一逆变器装置VFD1用作从装置。

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