METHOD AND APPARATUS FOR BIDIRECTIONAL STORAGE AND RENEWABLE POWER CONVERTER

    公开(公告)号:US20190052092A1

    公开(公告)日:2019-02-14

    申请号:US16103145

    申请日:2018-08-14

    Abstract: An energy storage system for renewable energy applications includes a renewable energy source, a bidirectional inverter connected an AC bus and a DC bus, an energy storage unit connected to the bidirectional DC/DC converter, and a control system comprising one or more controllers coupled to the bidirectional inverter and the bidirectional DC/DC converter. The bidirectional inverter is connected to the renewable energy source and a bidirectional DC/DC converter through the DC bus. The control system is configured to facilitate the operation of the bidirectional DC/DC converter and the bidirectional inverter. The energy storage system both stores energy from the renewable energy source and a utility grid, and also supplies power to the utility grid. The energy storage system is utilized in a method for supporting frequency regulation of a utility grid and a method for controlling an output power ramp rate for a renewable energy storage system.

    ISLANDING A PLURALITY OF GRID TIED POWER CONVERTERS

    公开(公告)号:US20180048158A1

    公开(公告)日:2018-02-15

    申请号:US15790549

    申请日:2017-10-23

    CPC classification number: H02J3/381 H02J2003/388 Y02P80/14 Y02P80/152

    Abstract: A power system having a plurality of power converters coupled together at a point of common coupling (PCC). The power converters are coupled to a load and provide a combined power converter output to the load. A switch is coupled in series between the PCC and an external grid. When the switch is closed, the power system is in a grid-tied configuration and when the switch is open, the power system is in a microgrid configuration. A control system coupled to the power converters enables the switch to open and close in response to a signal received from one or more sensors monitoring the external grid, enables the power converters to operate in a current control mode when the switch is closed, and transitions the power converters from grid-tied mode to microgrid mode and synchronize the power converters such that the converters share the load.

    POWER CONVERTER SYSTEM HAVING ACTIVE STANDBY MODE AND METHOD OF CONTROLLING THE SAME
    6.
    发明申请
    POWER CONVERTER SYSTEM HAVING ACTIVE STANDBY MODE AND METHOD OF CONTROLLING THE SAME 有权
    具有有源待机模式的电力转换器系统及其控制方法

    公开(公告)号:US20170005564A1

    公开(公告)日:2017-01-05

    申请号:US15197007

    申请日:2016-06-29

    Abstract: A power system having a plurality of operating modes including an active mode and an active standby mode includes a power converter and a controller the power converter is configured to adapt a power supply to a desired output, and the power converter includes a plurality of semiconductor switches that receive a gating signal when the power system is in the active mode such that the power converter is in a gating state. The controller controls the power converter in the active mode and the active standby mode, and the controller is configured to: while the power converter is synchronized to the grid, determine whether the power system should enter into the active standby mode in which the power converter is in a non-gating state; when it is determined the power system should enter into the active standby mode, control the power converter to be in a non-gating state such that the power system is in the active standby mode.

    Abstract translation: 具有主动模式和主动待机模式的多种操作模式的电力系统包括功率转换器和控制器,所述功率转换器被配置为使电源适配于期望的输出,并且所述功率转换器包括多个半导体开关 当电力系统处于活动模式时,其接收选通信号,使得功率转换器处于选通状态。 控制器控制电源转换器处于主动模式和主动待机模式,控制器配置为:电源转换器与电网同步时,确定电源系统是否应进入主动待机模式,在此模式下,电源转换器 处于非门控状态; 当确定电源系统进入主动待机模式时,控制电源转换器处于非门控状态,使电源系统处于主动待机状态。

    ENERGY STORAGE SYSTEM FOR PHOTOVOLTAIC ENERGY AND METHOD OF STORING PHOTOVOLTAIC ENERGY

    公开(公告)号:US20190115761A1

    公开(公告)日:2019-04-18

    申请号:US16213331

    申请日:2018-12-07

    Abstract: An energy system for renewable energy applications includes a renewable energy source, a bidirectional inverter connected an AC bus and a DC bus, an energy storage unit connected to the bidirectional DC/DC converter, and a control system comprising one or more controllers coupled to the bidirectional inverter and the bidirectional DC/DC converter. The bidirectional inverter is connected to the renewable energy source and a bidirectional DC/DC converter through the DC bus. The system is configured to capture low power of a photovoltaic (PV) array, energy typically lost to inverter clipping, and through the utilization of ramp rate control.

    ISLANDING A PLURALITY OF GRID TIED POWER CONVERTERS
    8.
    发明申请
    ISLANDING A PLURALITY OF GRID TIED POWER CONVERTERS 有权
    沉没多种电力电力转换器

    公开(公告)号:US20170005473A1

    公开(公告)日:2017-01-05

    申请号:US15196869

    申请日:2016-06-29

    CPC classification number: H02J3/381 H02J2003/388 Y02P80/14 Y02P80/152

    Abstract: A power system having a plurality of power converters coupled together at a point of common coupling (PCC). The power converters are coupled to a load and provide a combined power converter output to the load. A switch is coupled in series between the PCC and an external grid. When the switch is closed, the power system is in a grid-tied configuration and when the switch is open, the power system is in a microgrid configuration. A control system coupled to the power converters enables the switch to open and close in response to a signal received from one or more sensors monitoring the external grid, enables the power converters to operate in a current control mode when the switch is closed, and transitions the power converters from grid-tied mode to microgrid mode and synchronize the power converters such that the converters share the load.

    Abstract translation: 一种具有在公共耦合点(PCC)处耦合在一起的多个功率转换器的电力系统。 功率转换器耦合到负载,并向负载提供组合的功率转换器输出。 开关在PCC和外部电网之间串联耦合。 当交换机关闭时,电力系统处于并网配置,当交换机打开时,电力系统处于微电网配置。 耦合到功率转换器的控制系统使得开关响应于从监测外部电网的一个或多个传感器接收的信号而打开和关闭,使得电力转换器能够在开关闭合时以电流控制模式运行,并且转换 电源转换器从并网模式到微格栅模式,并同步电源转换器,使转换器共享负载。

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