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公开(公告)号：US20210175711A1
公开(公告)日：2021-06-10
申请号：US16071093
申请日：2017-03-06
Inventor： Jin YOSHIZAWA , Kenichi WATANABE , Toshifumi ISE , Jia LIU
Abstract: A power supply system includes: a synchronous generator connected to a three-phase power distribution system that is connected to a consumer load; an inverter that is connected to the power distribution system, supplies power to the consumer load, and compensates for unbalanced current of the synchronous generator; and a control device that generates a gate command for controlling the inverter. The control device: generates, based on a three-phase voltage and current output from the inverter, a target output voltage which is an amplitude of a vector in a complex plane combining voltages of three phases, and a target output phase which is a phase of the vector in the complex plane combining the voltages of three phases; generates a first compensation voltage, based on a current negative-phase-sequence component relating to the synchronous generator; and generates a gate command from the generated values.
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公开(公告)号：US20240291316A1
公开(公告)日：2024-08-29
申请号：US18570001
申请日：2022-05-11
Inventor： Kenichi WATANABE , Takamasa UENO , Atsuo OKAICHI
IPC: H02J13/00
CPC classification number: H02J13/00001 , H02J13/00002
Abstract: An energy resource control system according to the present disclosure includes a data acquirer, a display controller, and a generator. The data acquirer is configured to acquire measuring data measured in a facility. The display controller is configured to control a display unit to display data about the resource control. The generator is configured to generate a control command for a control target energy resource that is a target of the resource control. The display controller is further configured to allow the display unit to display an energy resource input screen. The generator is configured to generate the control command based on: the control target energy resource according to an input received on the energy resource input screen; and the measuring data acquired by the data acquirer.
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公开(公告)号：US20180331537A1
公开(公告)日：2018-11-15
申请号：US15775832
申请日：2016-11-09
Inventor： Kenichi WATANABE
Abstract: A received power control device (200) that performs control of received energy, which is an amount of power received from a power system per predetermined time at a power receiving point to which a load (302) and an electric storage device (303) are electrically connected, the received power control device (200) performing the control by controlling charge and discharge of at least the electric storage device (303), including: a received energy obtainer (201) that periodically obtains information indicating the received energy; a controller (202) that causes at least the electric storage device (303) to discharge to prevent the received energy from exceeding a first threshold; a remaining capacity obtainer (203) that periodically obtains information indicating a remaining capacity of the electric storage device (303); and a threshold setter (204) that increases the first threshold when an amount of decrease in the remaining capacity per unit time exceeds a second threshold.
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公开(公告)号：US20160048118A1
公开(公告)日：2016-02-18
申请号：US14781114
申请日：2014-02-26
Inventor： Hoday STEARNS , Kenichi WATANABE , Mitsuru KAJI
IPC: G05B19/042 , G05B19/10
CPC classification number: G05B19/106 , G05B19/0423 , G05B2219/25354 , G05B2219/2639 , H02J3/24 , H02J13/0006 , H02J2003/003 , Y04S10/54
Abstract: A frequency control method for use in a frequency control system including: a server that receives, from a power system operator, a power command for controlling a frequency of a power grid within a predetermined frequency; at least one distributed energy resource; and a local controller connected to the server through a communication network and to the at least one distributed energy resource, the frequency control method includes: receiving the power command from the power system operator; obtaining a frequency measurement of the power grid; predicting a next power command using the frequency measurement, before the next power command is received from the power system operator; and controlling an input or output of the at least one distributed power energy resource using the predicted next power command, before the next power command is received from the power system operator.
Abstract translation: 一种用于频率控制系统的频率控制方法，包括：服务器，从电力系统操作员接收用于控制预定频率内的电网频率的功率指令; 至少一个分布式能源; 以及通过通信网络和所述至少一个分布式能源连接到所述服务器的本地控制器，所述频率控制方法包括：从所述电力系统操作者接收所述电力指令; 获得电网的频率测量; 在从电力系统运营商接收到下一个电力指令之前，使用频率测量预测下一个电力指令; 以及在从所述电力系统运营商接收到下一个电力命令之前，使用所述预测的下一个电力指令来控制所述至少一个分布式电力能量的输入或输出。
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