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公开(公告)号：AU2003238599B9
公开(公告)日：2003-09-02
申请号：AU2003238599
申请日：2003-01-29
Applicant: EBARA CORP , FUJI ELECTRIC CO LTD
Inventor： NAKAJIMA KAORU , KAWAI MASHITO , MURAI YUKIO , MINAMI MASAHIRO , ICHIKAWA HIROAKI
IPC: H02P27/06 , G05F1/67 , H02J7/35 , H02M7/5387
Abstract: A photovoltaic inverter control method includes steps of monitoring a variation in output voltage of a solar battery by a power and voltage monitoring circuit ( 51 ) and, when the variation occurs, accelerating or decelerating an electric motor ( 3 ) to maximize the output voltage of the solar battery ( 1 ), whereby the electric motor for driving, for example, a pump and a fan by the solar battery as a power source can be driven by a photovoltaic inverter always at the maximum power point of the solar battery.
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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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公开(公告)号：AU6944801A
公开(公告)日：2002-01-21
申请号：AU6944801
申请日：2001-07-05
Applicant: EBARA CORP
Inventor： NAKAJIMA KAORU , KAJIWARA KENICHI , KAWAI MASAHITO , KISHI MASAHIKO , HIGAKI NOBUHIRO , MURAI YUKIO
Abstract: According to the present invention, in a water supply apparatus which converts output power of a solar cell with an inverter to drive a motor pump for pumping up water, a DC brushless motor having no sensor for detecting a position of a rotatable shaft is used as a motor for driving the pump. Further, the water supply apparatus, having a pump and a frequency converter for supplying electric power to the pump and controlling a rotational speed of the pump, includes a standard current value table in which rotational frequencies of the pump and standard current values as criteria for shutoff operation at the rotational frequencies are associated with each other, a rotational frequency detecting device for detecting a rotational frequency of the pump, a standard current value acquiring device for acquiring a standard current value corresponding to the rotational frequency detected by the rotational frequency detecting device with reference to the standard current value table, a current detecting device for detecting a current value supplied to the pump, and a comparing device for comparing the current value detected by the current detecting device with the standard current value acquired by the standard current value acquiring device.
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公开(公告)号：AU2003238599B2
公开(公告)日：2008-01-17
申请号：AU2003238599
申请日：2003-01-29
Applicant: EBARA CORP , FUJI ELECTRIC HOLDINGS
Inventor： NAKAJIMA KAORU , KAWAI MASHITO , MURAI YUKIO , MINAMI MASAHIRO , ICHIKAWA HIROAKI
IPC: H02P27/06 , G05F1/67 , H02J7/35 , H02M7/5387
Abstract: A photovoltaic inverter control method includes steps of monitoring a variation in output voltage of a solar battery by a power and voltage monitoring circuit ( 51 ) and, when the variation occurs, accelerating or decelerating an electric motor ( 3 ) to maximize the output voltage of the solar battery ( 1 ), whereby the electric motor for driving, for example, a pump and a fan by the solar battery as a power source can be driven by a photovoltaic inverter always at the maximum power point of the solar battery.
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公开(公告)号：HK1089223A1
公开(公告)日：2006-11-24
申请号：HK06109439
申请日：2006-08-25
Applicant: EBARA CORP
Inventor： HIRAIWA HIRONAO , NAKAJIMA KAORU , KOMATSU TAKAHIDE , TEJIMA TOMOHARU , NAKAHARA SATOSHI , HIGAKI NOBUHIRO , KURODA KIYOSHI
IPC: F04B20060101 , H02M20060101
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Patent Agency Ranking
公开(公告)号：BR0112491A
公开(公告)日：2003-11-25
申请号：BR0112491
申请日：2001-07-05
Applicant: EBARA CORP
Inventor： NAKAJIMA KAORU , KAJIWARA KENICHI , KAWAI MASAHITO , KISHI MASAHIKO , HIGAKI NOBUHIRO , MURAI YUKIO
Abstract: According to the present invention, in a water supply apparatus which converts output power of a solar cell with an inverter to drive a motor pump for pumping up water, a DC brushless motor having no sensor for detecting a position of a rotatable shaft is used as a motor for driving the pump. Further, the water supply apparatus, having a pump and a frequency converter for supplying electric power to the pump and controlling a rotational speed of the pump, includes a standard current value table in which rotational frequencies of the pump and standard current values as criteria for shutoff operation at the rotational frequencies are associated with each other, a rotational frequency detecting device for detecting a rotational frequency of the pump, a standard current value acquiring device for acquiring a standard current value corresponding to the rotational frequency detected by the rotational frequency detecting device with reference to the standard current value table, a current detecting device for detecting a current value supplied to the pump, and a comparing device for comparing the current value detected by the current detecting device with the standard current value acquired by the standard current value acquiring device.
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公开(公告)号：AU4726297A
公开(公告)日：1998-05-22
申请号：AU4726297
申请日：1997-10-30
Applicant: EBARA CORP
Inventor： NAKAJIMA KAORU , TADOKORO YASUKI
Abstract: The present invention provides a rotary machine integral with a control device, which is effective to reduce the cost of manufacture of a variable-speed pump or the like, and allows control programs to be easily established at the installation site. The present invention also provides an inverter device suitable for the above mentioned rotary machine. A rotary machine and control device combination comprises a rotary machine such as a pump, a fan, or the like and a control device integral therewith. The rotary machine has an inverter device (20) for operating the rotary machine, a memory (11) for storing a control program (11A) for the inverter device and a program (11B) for controlling operation of the rotary machine, a CPU (12) operable according to the programs stored in the memory (11), an input and output unit (15) connected to sensors and switches positioned in said rotary machine, one or more serial ports (14) connected to the CPU (12), and means for rewriting contents stored in the memory (11). The memory stores a plurality of control programs, there is a means for externally selecting a control program to be used among the stored control programs. The inverter device has a circuit board with circuit components thereon are encased by molded resin, with only input and output lines and interface terminals being disposed outside of the molded resin.
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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
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.
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公开(公告)号：EP2910787A4
公开(公告)日：2016-07-20
申请号：EP13843458
申请日：2013-09-30
Applicant: EBARA CORP
Inventor： IKEDA MASAYOSHI , TEJIMA TOMOHARU , NINOMIYA HIRONORI , KINOSHITA NOBORU , TAMURA HIROYUKI , TATEISHI KAZUFUMI , NAKAJIMA KAORU
CPC classification number: F04D15/0236 , F04B49/06 , F04B49/08 , F04B49/103 , F04B2203/0209 , F04B2205/05 , F04D15/0066 , F05D2270/03 , F05D2270/3013
Abstract: The present invention relates to a water supply apparatus that pressurizes water from a water main pipe to supply the water to a building, such as an apartment building, a commercial building, or the like. The water supply apparatus includes a controller (10) storing a first lower limit value L1 higher than a shutoff rotational speed N0 and a second lower limit value L2 lower than the shutoff rotational speed, which is a rotational speed required for achieving a target pressure PA in a shutoff state. The controller (10) is configured to switch a lower limit of the rotational speed of the pump (1) from the first lower limit value L1 to the second lower limit value L2, and determine that the pump (1) is in a low-flow-rate state if the rotational speed of the pump (1) becomes equal to or lower than the shutoff rotational speed N0 within a predetermined detection time.
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公开(公告)号：EP0936729A4
公开(公告)日：2000-08-30
申请号：EP97909703
申请日：1997-10-30
Applicant: EBARA CORP , EBARA DENSAN LTD
Inventor： NAKAJIMA KAORU , TADOKORO YASUKI
CPC classification number: H02P23/0077 , H02K11/33
Abstract: A rotating machine integrated with a controller, which can reduce the manufacturing cost of a variable speed pump, fan, etc., and can easily set a control program at the site of installation, and an inverter suitable for the rotating machine. The rotating machine is a pump, fan, or the like and has a controller (10) incorporated in the rotating machine and provided with an inverter (20) which drives the rotating machine, a memory (11) in which a program (11A) for controlling the inverter (20) and a program (11B) for controlling the operation of the rotating machine are stored, a CPU (12) which operates in accordance with a program stored in the memory (11), an input/output section (15) which is connected to sensors and switches installed in the rotating machine, one or a plurality of serial ports (14) for communication with the CPU (12), and a means which rewrites the stored contents of the memory (11). A plurality of control programs are stored in the memory (11), and a means which switches the control program in use from the outside is provided. In the inverter (20), a circuit board mounted with circuit parts is integrally molded with molding resin and only input/output wires and interface terminals are led out from the molding resin.
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