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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.

    WATER SUPPLY APPARATUS AND INVERTER
    10.
    发明专利
    WATER SUPPLY APPARATUS AND INVERTER 未知

    公开(公告)号：HK1086313A1

    公开(公告)日：2006-09-15

    申请号：HK06106341

    申请日：2006-06-01

    Applicant: EBARA CORP

    Inventor： HIRAIWA HIRONAO ,  NAKAJIMA KAORU ,  KOMATSU TAKAHIDE ,  SATO MOTOYASU ,  ISHIHARA SEIICHI ,  TAMURA HIROYUKI ,  TEJIMA TOMOHARU ,  NAKAHARA SATOSHI ,  HIGAKI NOBUHIRO ,  KURODA KIYOSHI

    IPC: F04B49/06 ,  H02M7/48 ,  H02P20060101

    Abstract: PROBLEM TO BE SOLVED: To provide a water feed apparatus capable of dealing with a configuration change in a flexible and inexpensive manner.SOLUTION: A water feed apparatus 1 includes: a plurality of pumps 3; a plurality of inverters 5 that variably control rotation frequency of the pumps corresponding thereto; and a control unit 6 that controls the inverters 5. Each of the inverters 5 includes: a main board 50 having a rectifier 500 that rectifies alternate current power, a power unit 501 that converts the power rectified by the rectifier 500 into alternate current power at a desired frequency, a central control unit 504 that controls the power unit 501, and a communication unit that exchanges information with the outside; and an input-output board 54 having an input terminal that inputs a signal from the outside and an output terminal that outputs a signal to the outside.

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