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164 条记录 (耗时 0.028 秒)

    INVERTER PARALLELING CONTROL SYSTEM AND METHOD
    91.
    发明申请
    INVERTER PARALLELING CONTROL SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20190067988A1

    公开(公告)日：2019-02-28

    申请号：US15684450

    申请日：2017-08-23

    申请人： SCHNEIDER ELECTRIC IT CORPORATION

    发明人： Rajesh Ghosh ,  Mudiyula Srikanth ,  Damir Klikic ,  Mahendrakumar H. Lipare ,  Nikhill Onthath

    IPC分类号： H02J9/06 ,  H02M1/12 ,  H02M1/14

    CPC分类号： H02J9/062 ,  H02J3/34 ,  H02M1/12 ,  H02M1/14 ,  H02M2007/4822

    摘要： According to one aspect, embodiments of the invention provide a UPS system comprising an input, an output, a converter, an inverter configured to convert DC power into output AC power, and a controller configured to operate the inverter to introduce a voltage droop to the output AC power, wherein the controller includes an active power droop controller including a first moving average filter configured to sample instantaneous active power of the inverter to obtain instantaneous active power samples and calculate a first DC component of the instantaneous active power samples, and a first Min-Max filter configured to receive the first DC component of the instantaneous active power samples and output a second DC component of the instantaneous active power samples having a convergence time less than the first DC component, wherein the active power droop controller is configured to calculate the voltage droop based on the second DC component.

    MOTOR AND FAN HAVING MOTOR
    95.
    发明申请
    MOTOR AND FAN HAVING MOTOR 审中-公开

    公开(公告)号：US20170353132A1

    公开(公告)日：2017-12-07

    申请号：US15611209

    申请日：2017-06-01

    申请人： Johnson Electric S.A.

    发明人： Rui Feng QIN ,  Xin Hui GUAN ,  Kwok Kuen TSE ,  Tao QU ,  Zhong WAN ,  Kai Qi XU ,  Bao Yi XU

    IPC分类号： H02P7/29 ,  H02P7/28 ,  H02J3/34 ,  H02M5/458 ,  H02J7/34

    CPC分类号： H02P7/2913 ,  H02J3/34 ,  H02J7/34 ,  H02K11/33 ,  H02M3/156 ,  H02M5/458 ,  H02P7/2805 ,  H02P7/29

    摘要： A fan and a motor thereof are provided. The motor includes a motor drive device. The motor drive device includes a printed circuit board. A control management unit and a voltage converter are arranged on the printed circuit board, the control management unit classifies target rotation speed signals provided by an ECU into multiple rotation speed intervals, with each rotation speed interval corresponding to a fixed duty ratio. The control management unit receives a target rotation speed signal transmitted from the ECU in a real-time manner, and outputs a pulse width modulation signal having a duty ratio corresponding to the rotation speed interval to which the target rotation speed signal transmitted from the ECU belongs. The voltage converter is connected between the power source and the winding, and is configured to regulate a voltage outputted to the winding in response to the pulse width modulation signal having the fixed duty ratio outputted from the control management unit, to control a rotation speed of the motor. The motor drive device performs segment control on the rotation speed of the motor, thereby reducing the cost.

    Method and apparatus for obtaining electricity from offshore wind turbines
    96.
    发明授权
    Method and apparatus for obtaining electricity from offshore wind turbines 有权

    公开(公告)号：US09735581B2

    公开(公告)日：2017-08-15

    申请号：US14253590

    申请日：2014-04-15

    申请人： ABB Technology AG

    发明人： Jiuping Pan ,  Debrup Das ,  Xiaoming Feng

    IPC分类号： H02J3/38 ,  F03D9/00 ,  H02J3/34 ,  F03D9/25

    CPC分类号： H02J3/38 ,  F03D9/257 ,  H02J3/34 ,  H02J3/386 ,  Y02E10/725 ,  Y02E10/727 ,  Y02E10/763 ,  Y10T307/664

    摘要： According to one aspect of the teachings herein, various feeder connection arrangements and architectures are disclosed, for collecting electricity from wind turbines in an offshore collection grid that operates at a fixed low frequency, e.g., at one third of the targeted utility grid frequency. Embodiments herein detail various feeder arrangements, such as the use of parallel feeder connections and cluster-based feeder arrangements where a centralized substation includes a common step-up transformer for outputting electricity at a stepped-up voltage, for low-frequency transmission to onshore equipment. Further aspects relate to advantageous generation arrangements, e.g., tower-based arrangements, for converting wind power into electrical power using, for example, medium-speed or high-speed gearboxes driving generators having a rated electrical frequency for full-power output in a range from about 50 Hz to about 150 Hz, with subsequent conversion to the fixed low frequency for off-shore collection.

    Automatic Network Device Electrical Phase Identification
    98.
    发明申请
    Automatic Network Device Electrical Phase Identification 审中-公开
    自动网络设备电相鉴定

    公开(公告)号：US20160352103A1

    公开(公告)日：2016-12-01

    申请号：US15058112

    申请日：2016-03-01

    申请人： Itron, Inc.

    发明人： Roberto Aiello ,  Patrick Amihood

    IPC分类号： H02J3/00 ,  G05B13/02

    CPC分类号： H02J3/00 ,  G01R19/2513 ,  G05B13/0265 ,  H02J3/26 ,  H02J3/34 ,  H02J13/0006 ,  H02J13/001 ,  Y02B70/3266 ,  Y04S10/40 ,  Y04S20/242

    摘要： Techniques detect an electrical phase used by electrical network devices (e.g., a transformer, electrical meter, etc.). Voltage measurement data is obtained, such as from electrical meters. The voltage measurement data may be associated with a timestamp, and may be made at intervals over a period of time. Voltage changes may be calculated using the voltage measurement data. In an example, the voltage change is a difference determined between sequential voltage measurements. In some instances, voltage changes data is removed if it exceeds a threshold. An initial classification of network devices (e.g., randomly or by assumed electrical phase) is determined. A clustering technique (e.g., k-means) is applied, wherein the classification is updated in a manner that segregates the network devices according to actual electrical phase.

    摘要翻译： 技术检测电网设备（例如，变压器，电表等）使用的电相位。 获得电压测量数据，例如从电表。 电压测量数据可以与时间戳相关联，并且可以在一段时间内间隔地进行。 可以使用电压测量数据计算电压变化。 在一个示例中，电压变化是在顺序电压测量之间确定的差值。 在某些情况下，如果电压变化超过阈值，则会删除电压变化数据。 确定网络设备的初始分类（例如，随机地或由假设的电相位）。 应用聚类技术（例如，k均值），其中以按照实际电相分离网络设备的方式更新分类。

    INVERTER, METHOD FOR OPERATING AN INVERTER AND ENERGY SUPPLY INSTALLATION WITH AN INVERTER
    99.
    发明申请
    INVERTER, METHOD FOR OPERATING AN INVERTER AND ENERGY SUPPLY INSTALLATION WITH AN INVERTER 有权
    逆变器，逆变器运行方法和能源供应安装

    公开(公告)号：US20150333657A1

    公开(公告)日：2015-11-19

    申请号：US14758974

    申请日：2013-10-22

    申请人： SMA SOLAR TECHNOLOGY

    发明人： Claus Allert ,  Thorsten Buleo ,  Markus Hopf

    IPC分类号： H02M7/44 ,  H02J3/34

    CPC分类号： H02M7/44 ,  H02J3/26 ,  H02J3/34 ,  H02J3/383 ,  H02J9/062 ,  H02J2003/388 ,  Y02B10/14 ,  Y02B10/72 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E40/50 ,  Y02P80/14 ,  Y10T307/305

    摘要： The invention relates to an inverter with at least one DC input for connecting to an energy producing device and/or an energy store and with a multiphase AC output for connecting to a local energy distribution network, which is coupled to a likewise multiphase master energy supply network via a switching device. The inverter is characterised in that it has a control terminal for connecting to the switching device such that individual phases of the local energy distribution network can be selectively connected to or disconnected from corresponding phases of the energy supply network via the control terminal, and is intended, in the event of a network error of at least one but not all phases of the energy supply network, to separate, via the control terminal, the at least one defective phase of the energy supply network from the corresponding phase of the local energy distribution network and to supply the at least one separated phase of the local energy distribution network with network-compatible alternating voltage. The invention also relates to a method for operating such an inverter and to an energy supply installation with an inverter.

    摘要翻译： 本发明涉及具有至少一个DC输入的逆变器，用于连接到能量产生装置和/或能量储存器，并具有用于连接到同一多相主能量供应的局部能量分配网络的多相AC输出 网络通过交换设备。 逆变器的特征在于它具有用于连接到开关装置的控制端子，使得本地能量分配网络的各个相位可以经由控制端子选择性地连接到能量供应网络的相应的相或从其断开，并且是预期的 在能量供应网络的至少一个但不是所有阶段的网络错误的情况下，经由控制终端将能量供应网络的至少一个故障阶段与本地能量分配的相应阶段分离 并且提供本地能量分布网络的至少一个分离阶段与网络兼容的交流电压。 本发明还涉及一种用于操作这种逆变器和与逆变器的能量供应装置的方法。

    Power grid operation control system, device, and method
    100.
    发明授权
    Power grid operation control system, device, and method 有权
    电网运行控制系统，装置及方法

    公开(公告)号：US09124138B2

    公开(公告)日：2015-09-01

    申请号：US13420838

    申请日：2012-03-15

    申请人： Shigeki Mori ,  Yuuta Gima ,  Ryuta Kinjo ,  Fumihiro Shinjo ,  Yasunori Uezu ,  Eiichiro Kagawa

    发明人： Shigeki Mori ,  Yuuta Gima ,  Ryuta Kinjo ,  Fumihiro Shinjo ,  Yasunori Uezu ,  Eiichiro Kagawa

    IPC分类号： H02J3/00 ,  H02J3/38 ,  H02J3/34

    CPC分类号： H02J3/382 ,  H02J3/34 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22 ,  Y10T307/718

    摘要： A power grid operation control system, device, and method for steadily operating a power grid while making the most of renewable energy. The power grid operation control system serves a power grid connected to a plurality of renewable energy and a plurality of thermal/hydroelectric power generators, and includes an automatic dispatching system, which controls the thermal/hydroelectric power generators, and a renewable energy generation control system, which controls the renewable energy. The automatic dispatching system controls the thermal/hydroelectric power generators by generating an automatic frequency control signal for correcting the power supply and demand imbalance of the power grid. The renewable energy generation control system determines an available connection capability and issues load instructions to ensure that the total power generation capacity of the renewable energy does not exceed the available connection capability.

    摘要翻译： 一种在充分利用可再生能源的同时稳定运行电网的电网运行控制系统，装置和方法。 电网运行控制系统用于连接多个可再生能源的电网和多个热/水力发电机，并且包括控制热/水力发电机的自动调度系统和可再生能源发电控制系统 ，其控制可再生能源。 自动调度系统通过生成自动频率控制信号来控制热/水力发电机，用于校正电网的电力供需不平衡。 可再生能源发电控制系统确定可用的连接能力并发出加载指令，以确保可再生能源的总发电能力不超过可用的连接能力。