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公开(公告)号：US08053930B2
公开(公告)日：2011-11-08
申请号：US12484558
申请日：2009-06-15
CPC分类号： H02J3/383 , Y02E10/563 , Y10T307/50 , Y10T307/707
摘要： A solar power plant with a plurality of photovoltaic modules for generating a power to be fed in a multi-phase grid, several photovoltaic strings, which are allocated to different phases, being connected to a primary side of a mains transformer and at least one inverter for converting the direct voltage generated by the photovoltaic modules into an alternating mains voltage conforming to the grid being provided and said mains transformer being provided with a neutral conductor and with a grounded terminal, is intended to be improved in such a manner that the life of the photovoltaic modules, in particular in case of thin-film modules, is increased, allowing for high conversion efficiency of the inverters at low wiring costs. This is achieved in that an additional direct voltage source is inserted between the neutral conductor and ground in such a manner that the potential of the photovoltaic strings is displaced and that a bias voltage is set, which is different from zero volt.
摘要翻译： 一种具有多个光伏模块的太阳能发电厂，其用于产生在多相电网中供电的功率，分配给不同相的几个光伏串连接到电力变压器的初级侧，并且至少一个逆变器 用于将由光伏模块产生的直流电压转换成符合提供的电网的交流电源电压，并且所述电源变压器设置有中性导体和接地端子，旨在以这样的方式改进： 特别是在薄膜模块的情况下，光伏模块被增加，从而能够以较低的布线成本实现逆变器的高转换效率。 这是通过在中性导体和地之间插入附加的直流电压源，使得光伏电池的电位发生偏移，并设定不同于零伏特的偏置电压。
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公开(公告)号：US20120001491A1
公开(公告)日：2012-01-05
申请号：US13228596
申请日：2011-09-09
CPC分类号： H02J3/383 , Y02E10/563 , Y10T307/50 , Y10T307/707
摘要： A solar power plant includes at least one photovoltaic module for generating power to be fed in a multi-phase grid. At least one inverter is provided for converting a direct voltage generated by the at least one photovoltaic module into an alternating mains voltage. A mains transformer is coupled to receive the alternating mains voltage from the inverter. The inverter is coupled to a primary side of the mains transformer. A direct voltage source coupled between an output of the at least one inverter and an input of the mains transformer such that a potential of the at least one photovoltaic module is displaced and that a bias voltage is set which is different from zero volts.
摘要翻译： 太阳能发电厂包括至少一个光伏模块，用于产生要在多相电网中馈电的功率。 提供至少一个逆变器用于将由至少一个光伏模块产生的直流电压转换成交流电源电压。 电源变压器被耦合以接收来自逆变器的交流电源电压。 逆变器耦合到电力变压器的初级侧。 耦合在所述至少一个逆变器的输出端和所述电源变压器的输入端之间的直流电压源，使得所述至少一个光伏组件的电位移位，并且设定不同于零伏特的偏置电压。
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公开(公告)号：US20090315404A1
公开(公告)日：2009-12-24
申请号：US12484558
申请日：2009-06-15
IPC分类号： H02J5/00
CPC分类号： H02J3/383 , Y02E10/563 , Y10T307/50 , Y10T307/707
摘要： A solar power plant with a plurality of photovoltaic modules for generating a power to be fed in a multi-phase grid, several photovoltaic strings, which are allocated to different phases, being connected to a primary side of a mains transformer and at least one inverter for converting the direct voltage generated by the photovoltaic modules into an alternating mains voltage conforming to the grid being provided and said mains transformer being provided with a neutral conductor and with a grounded terminal, is intended to be improved in such a manner that the life of the photovoltaic modules, in particular in case of thin-film modules, is increased, allowing for high conversion efficiency of the inverters at low wiring costs. This is achieved in that an additional direct voltage source is inserted between the neutral conductor and ground in such a manner that the potential of the photovoltaic strings is displaced and that a bias voltage is set, which is different from zero volt.
摘要翻译： 一种具有多个光伏模块的太阳能发电厂，其用于产生在多相电网中供电的功率，分配给不同相的几个光伏串连接到电力变压器的初级侧，并且至少一个逆变器 用于将由光伏模块产生的直流电压转换成符合提供的电网的交流电源电压，并且所述电源变压器设置有中性导体和接地端子，旨在以这样的方式改进： 特别是在薄膜模块的情况下，光伏模块被增加，从而能够以较低的布线成本实现逆变器的高转换效率。 这是通过在中性导体和地之间插入附加的直流电压源，使得光伏电池的电位发生偏移，并设定不同于零伏特的偏置电压。
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4.发明申请公开(公告)号：US20070179720A1
公开(公告)日：2007-08-02
申请号：US11650781
申请日：2007-01-08
申请人： Holger Becker , Gunther Cramer , Sven Bremicker , Thorsten Dingel , Bernd Engel , Wilfried Groote , Frank Greizer , Joachim Laschinski , Matthias Victor , Torben Westphal
发明人： Holger Becker , Gunther Cramer , Sven Bremicker , Thorsten Dingel , Bernd Engel , Wilfried Groote , Frank Greizer , Joachim Laschinski , Matthias Victor , Torben Westphal
CPC分类号： H02J3/383 , H02J3/26 , Y02E10/563 , Y02E40/50 , Y10T307/505 , Y10T307/511 , Y10T307/707
摘要： A method of converting a direct voltage generated by a decentralized power supply system into three-phase alternating voltage by means of a plurality of single-phase inverters (WR1-WR3), said alternating voltage being provided for supplying an electric mains, is intended to avoid inadmissible load unbalances using single-phase inverters. This is achieved in that, upon failure of one inverter (WR1-WR3), an asymmetrical power supply distribution is reduced by limiting the output of the other inverters. The method makes it possible to simplify three-phase voltage monitoring.
摘要翻译： 一种通过多个单相逆变器（WR 1 -WR 3）将由分散电源系统产生的直流电压转换为三相交流电压的方法，所述交流电压被提供用于供电， 旨在避免使用单相逆变器的不允许的负载不平衡。 这是通过一个逆变器（WR 1 -WR 3）的故障而实现的，通过限制其他逆变器的输出来减小非对称的电源分配。 该方法可以简化三相电压监测。
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公开(公告)号：US20110298292A1
公开(公告)日：2011-12-08
申请号：US13204957
申请日：2011-08-08
IPC分类号： H02M7/42
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。
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6.发明授权Method of and apparatus for connecting a photovoltaic device to an AC power grid 有权将光伏器件连接到交流电网的方法和装置公开(公告)号：US08482936B2
公开(公告)日：2013-07-09
申请号：US13273512
申请日：2011-10-14
申请人： Andreas Falk , Joachim Laschinski , Oliver Arend , Peter Simon , Wolfgang Reichenbaecher , Frank Greizer
发明人： Andreas Falk , Joachim Laschinski , Oliver Arend , Peter Simon , Wolfgang Reichenbaecher , Frank Greizer
CPC分类号： H02J3/383 , Y02E10/563
摘要： A method of connecting a photovoltaic device to an AC power grid through an inverter includes monitoring a DC voltage at an input of an inverter, and activating the inverter when the monitored DC voltage exceeds a first predetermined threshold. The method further includes synchronizing an output voltage of the inverter with a grid voltage, connecting an output of the inverter to the AC power grid upon synchronization if the monitored DC voltage exceeds second predetermined threshold, and deactivating the inverter if a detected power being fed through the inverter falls below a predetermined power threshold while maintaining the connection between the output of the inverter and the AC power grid. Lastly, the method includes disconnecting the output of the deactivated inverter from the grid if the monitored DC voltage falls below a third predetermined threshold. Further, an apparatus that performs such functionality is also provided.
摘要翻译： 通过逆变器将光伏器件连接到交流电网的方法包括：监视逆变器的输入端的直流电压，以及当所监视的直流电压超过第一预定阈值时启动逆变器。 该方法还包括使逆变器的输出电压与电网电压同步，如果所监视的直流电压超过第二预定阈值，则在同步时将逆变器的输出连接到交流电网，并且如果检测到的功率被馈送通过则停用逆变器 在保持逆变器的输出与交流电网之间的连接的同时，逆变器下降到预定功率阈值以下。 最后，如果所监视的直流电压低于第三预定阈值，则该方法包括将停用的反相器的输出与电网断开连接。 此外，还提供了执行这种功能的装置。
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公开(公告)号：US09018801B2
公开(公告)日：2015-04-28
申请号：US13204957
申请日：2011-08-08
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。
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8.发明申请Method of and Apparatus for Connecting a Photovoltaic Device to an AC Power Grid 有权将光伏器件连接到交流电网的方法和装置公开(公告)号：US20120039101A1
公开(公告)日：2012-02-16
申请号：US13273512
申请日：2011-10-14
申请人： Andreas Falk , Joachim Laschinski , Oliver Arend , Peter Simon , Wolfgang Reichenbaecher , Frank Greizer
发明人： Andreas Falk , Joachim Laschinski , Oliver Arend , Peter Simon , Wolfgang Reichenbaecher , Frank Greizer
IPC分类号： H02M7/44
CPC分类号： H02J3/383 , Y02E10/563
摘要： A method of connecting a photovoltaic device to an AC power grid through an inverter includes monitoring a DC voltage at an input of an inverter, and activating the inverter when the monitored DC voltage exceeds a first predetermined threshold. The method further includes synchronizing an output voltage of the inverter with a grid voltage, connecting an output of the inverter to the AC power grid upon synchronization if the monitored DC voltage exceeds a second predetermined threshold, and deactivating the inverter if a detected power being fed through the inverter falls below a predetermined power threshold while maintaining the connection between the output of the inverter and the AC power grid. Lastly, the method includes disconnecting the output of the deactivated inverter from the grid if the monitored DC voltage falls below a third predetermined threshold. Further, an apparatus that performs such functionality is also provided.
摘要翻译： 通过逆变器将光伏器件连接到交流电网的方法包括：监视逆变器的输入端的直流电压，以及当所监视的直流电压超过第一预定阈值时启动逆变器。 该方法还包括使逆变器的输出电压与电网电压同步，如果所监视的直流电压超过第二预定阈值，则在同步时将逆变器的输出连接到交流电网，以及如果检测到的电力被馈送则停用逆变器 通过逆变器在保持逆变器的输出和交流电网之间的连接的同时降低到预定功率阈值以下。 最后，如果所监视的直流电压低于第三预定阈值，则该方法包括将停用的反相器的输出与电网断开连接。 此外，还提供了执行这种功能的装置。
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公开(公告)号：US07672115B2
公开(公告)日：2010-03-02
申请号：US12151259
申请日：2008-05-05
摘要： The subject matter of the invention is an inverter including a casing (1), said casing (1) including at least two casing chambers (2, 3) that are each closable through a separate cover (2a, 3a).
摘要翻译： 本发明的主题是包括壳体（1）的逆变器，所述壳体（1）包括至少两个可通过单独的盖（2a，3a）关闭的壳体室（2,3）。
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公开(公告)号：US20080290252A1
公开(公告)日：2008-11-27
申请号：US12151492
申请日：2008-05-07
申请人： Gerald Leonhardt , Christian Kuhnel , Joachim Laschinski , Sven Bremicker , Oliver Arend , Gerd Bettenwort , Wolfgang Kurt Reichenbacher
发明人： Gerald Leonhardt , Christian Kuhnel , Joachim Laschinski , Sven Bremicker , Oliver Arend , Gerd Bettenwort , Wolfgang Kurt Reichenbacher
IPC分类号： G01C21/02
摘要： A method of matching the power of a photovoltaic system producing electric energy by which a working point at which the system produces maximum power is set by changing the working point in an MPP matching process and by comparing the system power, which changes as a result thereof, is intended to be suited both for stationary characteristic curves and for non stationary generator characteristic curves and to be easy to carry out so that the best working point is always set, even when the system is subjected to external interfering factors. This is achieved in that one or several additional control steps or control cycles are performed in order to track during the matching process a power point changing under external impact for a working point of even higher power to be set.
摘要翻译： 一种匹配产生电能的光伏系统的功率的方法，通过改变MPP匹配处理中的工作点并通过比较系统功率来改变系统产生最大功率的工作点，从而改变系统功率 ，旨在适用于静态特性曲线和非固定发电机特性曲线，并且易于执行，以便始终设置最佳工作点，即使系统受到外部干扰因素的影响。 这是通过执行一个或几个附加的控制步骤或控制周期，以便在匹配过程期间跟踪在外部冲击下的功率点对于要设定的更高功率的工作点的变化。
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