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    Photovoltaic system for feeding three-phase current into a power grid
    1.
    发明授权
    Photovoltaic system for feeding three-phase current into a power grid 有权
    用于将三相电流馈入电网的光伏系统

    公开(公告)号：US09018801B2

    公开(公告)日：2015-04-28

    申请号：US13204957

    申请日：2011-08-08

    申请人： Sven Bremicker ,  Frank Greizer ,  Joachim Laschinski ,  Matthias Victor ,  Peter Simon

    发明人： Sven Bremicker ,  Frank Greizer ,  Joachim Laschinski ,  Matthias Victor ,  Peter Simon

    IPC分类号： H02J1/00 ,  H02J3/38 ,  H01L31/02

    CPC分类号： H02J3/383 ,  H01L31/02021 ,  Y02E10/563 ,  Y10T307/707

    摘要： The invention relates to a photovoltaic system for feeding three-phase current to a power grid that includes several monophase or three-phase photovoltaic inverters that can be connected to the power grid at the output end and are each fitted with a disconnecting device at the output end. The system includes several photovoltaic generators that are connected to the input end of the photovoltaic inverters. A central control and monitoring unit is connected between the photovoltaic inverters and the power grid. The control and monitoring unit has a grid monitoring device at the feeding point to the grid to measure one or more grid parameters. At least one communication link is provided between the individual photovoltaic inverters or the individual disconnecting devices and the connected central control and monitoring unit such that the connecting devices can disconnect the individual photovoltaic inverters from the power grid by means of a control instruction signal of the communication link. The central control and monitoring unit includes a load unbalance recognition component and a load unbalance regulation component, wherein the regulation includes limiting the power variation between the individual phases to a predetermined value.

    摘要翻译： 本发明涉及一种用于将三相电流馈送到电网的光伏系统，该电力系统包括若干单相或三相光伏逆变器，其可在输出端连接到电力网，并且在输出端分别装有断开装置 结束。 该系统包括连接到光伏逆变器的输入端的几个光伏发电机。 光伏逆变器和电网之间连接一个中央控制和监控单元。 控制和监测单元在电网的馈电点处具有网格监测装置，以测量一个或多个电网参数。 在各个光伏逆变器或单独的断路装置和连接的中央控制和监测单元之间提供至少一个通信链路，使得连接装置可以通过通信的控制指令信号将各个光伏逆变器与电网断开 链接。 中央控制和监测单元包括负载不平衡识别部件和负载不平衡调节部件，其中所述调节包括将各个相之间的功率变化限制到预定值。

    Inverter, more specifically for photovoltaic plants
    4.
    发明授权
    Inverter, more specifically for photovoltaic plants 有权
    逆变器，更专门用于光伏电站

    公开(公告)号：US07843714B2

    公开(公告)日：2010-11-30

    申请号：US12221125

    申请日：2008-07-31

    申请人： Sven Bremicker ,  Frank Greizer ,  Matthias Victor

    发明人： Sven Bremicker ,  Frank Greizer ,  Matthias Victor

    IPC分类号： H02M7/5387

    CPC分类号： H02M7/515 ,  H02M1/15 ,  H02M1/44 ,  H02M7/5387 ,  H02M7/5388 ,  Y02E10/56

    摘要： On an inverter (1) for converting an electric direct voltage, in particular of a photovoltaic direct voltage source into an alternating voltage with a direct voltage input with two terminals (DC+, DC−) and one alternating voltage output with two terminals (AC1, AC2) and with one bridge circuit including semiconductor switching elements (S1-S6), said bridge circuit comprising one first bridge branch (Z1) including four switching elements (S1-S4) and one second bridge branch (Z2) including two additional switching elements (S5, S6) as well as a freewheeling circuit provided with additional diodes (D7, D8), the efficiency is further increased without high frequency interferences and capacitive leakage currents having the possibility to occur on the generator side. This is achieved in that a respective one of the freewheeling diodes (D7, D8) forms a freewheeling branch together with a respective one of the switching elements (S2, S3) located in the first bridge branch (Z1), said freewheeling branch carrying a freewheeling current in a condition decoupled from the direct voltage.

    摘要翻译： 在用于将具有两个端子（DC +，DC-）的直流电压输入和具有两个端子（AC1，...）的一个交流电压输出的电压直接电压特别是光伏直流电压源转换为交流电压的逆变器（1） AC2），并且具有包括半导体开关元件（S1-S6）的一个桥接电路，所述桥接电路包括一个包括四个开关元件（S1-S4）和一个第二桥接支路（Z2）的第一桥接支路（Z1） （S5，S6）以及具有附加二极管（D7，D8）的续流电路，进一步增加了效率，而没有发生器侧可能发生的高频干扰和电容性泄漏电流。 这样实现的是，续流二极管（D7，D8）中的相应一个与位于第一桥接支路（Z1）中的开关元件（S2，S3）中的相应一个形成续流支路，所述续流支路 在与直流电压分离的条件下的续流电流。

    Method for activating a multi-string inverter for photovoltaic plants
    8.
    发明申请
    Method for activating a multi-string inverter for photovoltaic plants 有权
    激活光伏电站多串逆变器的方法

    公开(公告)号：US20090236917A1

    公开(公告)日：2009-09-24

    申请号：US12322916

    申请日：2009-02-09

    申请人： Gerd Bettenwort ,  Ralf Juchem ,  Matthias Victor ,  Tobias Muller

    发明人： Gerd Bettenwort ,  Ralf Juchem ,  Matthias Victor ,  Tobias Muller

    IPC分类号： H02J1/00

    CPC分类号： H02J1/102 ,  H02J3/383 ,  H02J3/385 ,  H02M3/1584 ,  H02M7/48 ,  H02M2001/007 ,  Y02E10/563 ,  Y02E10/58 ,  Y10T307/707

    摘要： A method of activating a Multi-String inverter for photovoltaic generators (1a, 1b) of a photovoltaic plant (6), the Multi-String inverter incorporating on the input side a separate DC-DC converter (2a, 2b) for each generator string (photovoltaic generator) (1a, 1b) and each output of the DC-DC converters (2a, 2b) being connected in parallel and to an input of a DC-AC converter (3) and the DC-AC converter (3) being connected with an alternating current mains (4) for feeding into the mains aims at improving efficiency. This is achieved in that one or several electrical variables, namely input current, input voltage and/or input power are measured at each DC-DC converter (2a, 2b) and at least one of the DC-DC converters (2a, 2b) changing its operating condition as a is function of this measurement when a limit value and/or a range is exceeded in such a manner that its power loss is reduced so that the energy yield of the photovoltaic plant (6) is increased.

    摘要翻译： 一种激活光伏电站（6）的光伏发电机（1a，1b）的多串联逆变器的方法，所述多串联逆变器在输入侧包括用于每个发电机串的单独的DC-DC转换器（2a，2b） （光电发生器）（1a，1b），DC-DC转换器（2a，2b）的每个输出并联连接到DC-AC转换器（3）和DC-AC转换器（3）的输入端 与交流电源（4）连接以供电到电源，旨在提高效率。 这是通过在每个DC-DC转换器（2a，2b）和至少一个DC-DC转换器（2a，2b）中测量一个或多个电变量，即输入电流，输入电压和/或输入功率， 当超过限制值和/或范围以减小其功率损耗使得光伏电站（6）的能量产量增加时，作为该测量的功能来改变其工作条件。

    Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic couse of direct current voltage, into a alternating current voltage
    9.
    发明申请
    Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic couse of direct current voltage, into a alternating current voltage 有权
    将来自直流电压源的直流电压更具体地从直流电压的光伏电池转换成交流电压的方法

    公开(公告)号：US20050286281A1

    公开(公告)日：2005-12-29

    申请号：US11154094

    申请日：2005-06-16

    申请人： Matthias Victor ,  Frank Greizer ,  Sven Bremicker ,  Uwe Hubler

    发明人： Matthias Victor ,  Frank Greizer ,  Sven Bremicker ,  Uwe Hubler

    IPC分类号： H02M7/48 ,  H02M7/537

    CPC分类号： H02M7/48 ,  H02J3/383 ,  Y02E10/563

    摘要： An inverter is devised to avoid high-frequency voltages at input terminals and to allow good efficiency thanks to its simple and cost-optimized circuit layout. This is achieved by a method of converting a direct current voltage, more specifically from a photovoltaic source of direct current voltage, into an alternating current voltage at a frequency through a bridge circuit comprising switching elements (V1-V4) and free-wheeling elements (D1-D4), said switching elements (V1-V4) being on the one side gated at the frequency and on the other side clocked at a high clock rate, a direct current voltage circuit, an alternating current voltage circuit and a plurality of free-wheeling phases being provided. It is provided that, during the free-wheeling phases, the alternating current voltage circuit is decoupled from the direct current voltage circuit by means of a switching element disposed in the direct current voltage circuit, a free-wheeling current flowing through one of the free-wheeling elements (D1) in the bridge circuit when in the decoupled state.

    摘要翻译： 设计了一种逆变器，以避免输入端子处的高频电压，并且由于其简单且成本优化的电路布局，可以实现高效率。 这是通过将直流电压更具体地从直流电压的光源转换成通过包括开关元件（V 1 -V 4）和续流的桥式电路的频率的交流电压的方法来实现的 元件（D 1 -D 4），所述开关元件（V 1 -V 4）在一侧以在高时钟频率时钟的频率和另一侧选通，直流电压电路，交流电压 电路和多个续流相。 规定在续流阶段期间，交流电压电路通过设置在直流电压电路中的开关元件与直流电压电路分离，流过自由电流之一的续流电流 （D1）在桥接电路中处于去耦状态。

    Method for activating a multi-string inverter for photovoltaic plants
    10.
    发明授权
    Method for activating a multi-string inverter for photovoltaic plants 有权
    激活光伏电站多串逆变器的方法

    公开(公告)号：US08212409B2

    公开(公告)日：2012-07-03

    申请号：US12322916

    申请日：2009-02-09

    申请人： Gerd Bettenwort ,  Ralf Juchem ,  Matthias Victor ,  Tobias Müller

    发明人： Gerd Bettenwort ,  Ralf Juchem ,  Matthias Victor ,  Tobias Müller

    IPC分类号： H02J3/00

    CPC分类号： H02J1/102 ,  H02J3/383 ,  H02J3/385 ,  H02M3/1584 ,  H02M7/48 ,  H02M2001/007 ,  Y02E10/563 ,  Y02E10/58 ,  Y10T307/707

    摘要： A method of activating a Multi-String inverter for photovoltaic generators (1a, 1b) of a photovoltaic plant (6), the Multi-String inverter incorporating on the input side a separate DC-DC converter (2a, 2b) for each generator string (photovoltaic generator) (1a, 1b) and each output of the DC-DC converters (2a, 2b) being connected in parallel and to an input of a DC-AC converter (3) and the DC-AC converter (3) being connected with an alternating current mains (4) for feeding into the mains aims at improving efficiency. This is achieved in that one or several electrical variables, namely input current, input voltage and/or input power are measured at each DC-DC converter (2a, 2b) and at least one of the DC-DC converters (2a, 2b) changing its operating condition as a function of this measurement when a limit value and/or a range is exceeded in such a manner that its power loss is reduced so that the energy yield of the photovoltaic plant (6) is increased.

    摘要翻译： 一种激活光伏电站（6）的光伏发电机（1a，1b）的多串联逆变器的方法，所述多串联逆变器在输入侧包括用于每个发电机串的单独的DC-DC转换器（2a，2b） （光电发生器）（1a，1b），DC-DC转换器（2a，2b）的每个输出并联连接到DC-AC转换器（3）和DC-AC转换器（3）的输入端 与交流电源（4）连接以供电到电源，旨在提高效率。 这是通过在每个DC-DC转换器（2a，2b）和至少一个DC-DC转换器（2a，2b）中测量一个或多个电变量，即输入电流，输入电压和/或输入功率， 当超过限制值和/或范围以减小其功率损耗使得光伏电站（6）的能量产量增加时，作为该测量的函数改变其工作条件。