Method and apparatus for connecting a photovoltaic system to a power grid
    1.
    发明申请
    Method and apparatus for connecting a photovoltaic system to a power grid 失效
    将光伏系统连接到电网的方法和装置

    公开(公告)号:US20100090634A1

    公开(公告)日:2010-04-15

    申请号:US12540020

    申请日:2009-08-12

    Abstract: An apparatus and a method for preparing connection of a photovoltaic system (Q1) as a first energy source to a power grid (13) by way of a motor generator set (5, 6, 7) is presented. The DC motor (5) is coupled to a three-phase generator (7) by way of a shaft (6), wherein the three-phase generator (7) can be connected to the power grid (13). It has been observed that connecting this type of apparatus to the small or varying power output of the photovoltaic system (Q1) can be difficult and time-consuming. To enable a clean and quick connection, the DC motor (5) is powered with electric DC current from a second DC current source (Q2), wherein the operation of the three-phase generator (7) is matched to the conditions in the power grid (13) with the help of the second DC current source (Q2), and wherein the photovoltaic system (Q1) is connected to the DC motor (5) and the second DC current source (Q2) is disconnected from the DC motor (5) only after a complete match has been attained. This enables a quick and precise connection of the photovoltaic system (Q1) to the power grid (13) with defined parameters using the three-phase generator (7).

    Abstract translation: 提出了一种用于通过电动发电机组(5,6,7)准备将作为第一能量源的光伏系统(Q1)连接到电网(13)的装置和方法。 直流电动机(5)通过轴(6)耦合到三相发电机(7),其中三相发电机(7)可以连接到电网(13)。 已经观察到,将这种类型的装置连接到光伏系统(Q1)的小的或变化的功率输出可能是困难和耗时的。 为了实现干净和快速的连接,直流电动机(5)由来自第二直流电源(Q2)的电流直流电供电,其中三相发电机(7)的工作与功率条件相匹配 借助于第二直流电流源(Q2),电网(13),其中光伏系统(Q1)连接到直流电动机(5),第二直流电流源(Q2)与直流电动机 5)只有在完成比赛完成后。 这使得能够使用三相发电机(7)以规定的参数快速和精确地将光伏系统(Q1)连接到电网(13)。

    Photovoltaic system and method for operating a photovoltaic system
    2.
    发明授权
    Photovoltaic system and method for operating a photovoltaic system 失效
    用于操作光伏系统的光伏系统和方法

    公开(公告)号:US07609019B2

    公开(公告)日:2009-10-27

    申请号:US11756814

    申请日:2007-06-01

    Abstract: A photovoltaic system includes a plurality of photovoltaic modules and a DC motor connected to a three-phase generator driven by a shaft. The three-phase generator is connected to a power mains. The electric power supplied to the DC motor by the plurality of photovoltaic modules is repeatedly measured and adjusted, by changing an external excitation current of the DC motor, to the peak power attainable at the current ambient temperature and the current incident solar radiation intensity. The peak power is preferably determined by incrementally changing the excitation current in predetermined time intervals, until the supplied electric power produces a power level which can be regarded as the peak power.

    Abstract translation: 光伏系统包括多个光伏模块和连接到由轴驱动的三相发电机的直流电动机。 三相发电机连接到电源。 通过将DC电动机的外部激励电流改变为在当前环境温度和当前入射的太阳辐射强度下可达到的峰值功率,通过多个光伏模块提供给DC电动机的电力被重复测量和调节。 峰值功率优选通过以预定的时间间隔递增地改变激励电流来确定,直到所提供的电功率产生可被视为峰值功率的功率电平。

    Method and apparatus for connecting a photovoltaic system to a power grid
    3.
    发明授权
    Method and apparatus for connecting a photovoltaic system to a power grid 失效
    将光伏系统连接到电网的方法和装置

    公开(公告)号:US08115426B2

    公开(公告)日:2012-02-14

    申请号:US12540020

    申请日:2009-08-12

    Abstract: An apparatus and a method for preparing connection of a photovoltaic system (Q1) as a first energy source to a power grid (13) by way of a motor generator set (5, 6, 7) is presented. The DC motor (5) is coupled to a three-phase generator (7) by way of a shaft (6), wherein the three-phase generator (7) can be connected to the power grid (13). It has been observed that connecting this type of apparatus to the small or varying power output of the photovoltaic system (Q1) can be difficult and time-consuming. To enable a clean and quick connection, the DC motor (5) is powered with electric DC current from a second DC current source (Q2), wherein the operation of the three-phase generator (7) is matched to the conditions in the power grid (13) with the help of the second DC current source (Q2), and wherein the photovoltaic system (Q1) is connected to the DC motor (5) and the second DC current source (Q2) is disconnected from the DC motor (5) only after a complete match has been attained. This enables a quick and precise connection of the photovoltaic system (Q1) to the power grid (13) with defined parameters using the three-phase generator (7).

    Abstract translation: 提出了一种用于通过电动发电机组(5,6,7)准备将作为第一能量源的光伏系统(Q1)连接到电网(13)的装置和方法。 直流电动机(5)通过轴(6)耦合到三相发电机(7),其中三相发电机(7)可以连接到电网(13)。 已经观察到,将这种类型的装置连接到光伏系统(Q1)的小的或变化的功率输出可能是困难和耗时的。 为了实现干净和快速的连接,直流电动机(5)由来自第二直流电源(Q2)的电流直流电供电,其中三相发电机(7)的工作与功率条件相匹配 借助于第二直流电流源(Q2),电网(13),其中光伏系统(Q1)连接到直流电动机(5),第二直流电流源(Q2)与直流电动机 5)只有在完成比赛完成后。 这使得能够使用三相发电机(7)以规定的参数快速和精确地将光伏系统(Q1)连接到电网(13)。

    PHOTOVOLTAIC SYSTEM AND METHOD FOR OPERATING A PHOTOVOLTAIC SYSTEM
    4.
    发明申请
    PHOTOVOLTAIC SYSTEM AND METHOD FOR OPERATING A PHOTOVOLTAIC SYSTEM 失效
    用于操作光伏系统的光伏系统和方法

    公开(公告)号:US20070290636A1

    公开(公告)日:2007-12-20

    申请号:US11756814

    申请日:2007-06-01

    Abstract: A photovoltaic system includes a plurality of photovoltaic modules and a DC motor connected to a three-phase generator driven by a shaft. The three-phase generator is connected to a power mains. The electric power supplied to the DC motor by the plurality of photovoltaic modules is repeatedly measured and adjusted, by changing an external excitation current of the DC motor, to the peak power attainable at the current ambient temperature and the current incident solar radiation intensity. The peak power is preferably determined by incrementally changing the excitation current in predetermined time intervals, until the supplied electric power produces a power level which can be regarded as the peak power.

    Abstract translation: 光伏系统包括多个光伏模块和连接到由轴驱动的三相发电机的直流电动机。 三相发电机连接到电源。 通过将DC电动机的外部激励电流改变为在当前环境温度和当前入射的太阳辐射强度下可达到的峰值功率,通过多个光伏模块提供给DC电动机的电力被重复测量和调节。 峰值功率优选通过以预定的时间间隔递增地改变激励电流来确定,直到所提供的电功率产生可被视为峰值功率的功率电平。

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