Patents Assigned to Wind Engineering Center Co., Ltd.
  • Patent number: 9866022
    Abstract: When an AC line of one local system and a power system are in a parallel-off state, a control device included in a power supply system causes local inverter devices of the local systems to operate in a parallel-off operation mode in which control is performed such that the voltage and frequency of power on the AC line is at a target voltage and a target frequency determined according to the state of charge of a power storage device. When a condition for switching to the connected state has been satisfied, the control device stops operation of the local inverter device in the parallel-off operation mode and causes a switch to the connected state by operating the interrupting device, and thereafter causes the local inverter device to operate in a charging operation mode used in charging the power storage device with supplementary power received from the power system.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: January 9, 2018
    Assignees: Osaka Gas Co., Ltd., Wind Engineering Center Co., Ltd.
    Inventors: Kunihiro Nakao, Koji Yakire, Tomoyuki Hirai, Satoshi Nagata
  • Patent number: 9705326
    Abstract: A power consumption mode guiding device includes a local system wherein the frequency of power on an AC line, is controlled at a target frequency determined according to the state of charge of a power storage device. The power consumption mode guiding device includes a frequency detection unit that detects the actual frequency of power on the AC line, an information storage unit in which guidance information for guiding the mode of use of a power consumption device by a power consumer (D) to a prescribed mode are stored in advance in association with frequency information obtained from detection results from the frequency detection unit, and a guidance information output unit that reads out, from the information storage unit, the guidance information associated with the frequency information obtained from the detection result from the frequency detection unit, and outputs the guidance information to the power consumer (D).
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 11, 2017
    Assignees: Osaka Gas Co., Ltd., Wind Engineering Center Co., Ltd.
    Inventors: Kunihiro Nakao, Koji Yakire, Tomoyuki Hirai, Satoshi Nagata
  • Publication number: 20150180236
    Abstract: A power consumption mode guiding device includes a local system wherein the frequency of power on an AC line, is controlled at a target frequency determined according to the state of charge of a power storage device. The power consumption mode guiding device includes a frequency detection unit that detects the actual frequency of power on the AC line, an information storage unit in which guidance information for guiding the mode of use of a power consumption device by a power consumer (D) to a prescribed mode are stored in advance in association with frequency information obtained from detection results from the frequency detection unit, and a guidance information output unit that reads out, from the information storage unit, the guidance information associated with the frequency information obtained from the detection result from the frequency detection unit, and outputs the guidance information to the power consumer (D).
    Type: Application
    Filed: March 23, 2012
    Publication date: June 25, 2015
    Applicants: Wind Engineering Center Co., Ltd., Osaka Gas Co., Ltd.
    Inventors: Kunihiro Nakao, Koji Yakire, Tomoyuki Hirai, Satoshi Nagata