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    • 9. 发明申请
    • PHOTOVOLTAIC SYSTEM FOR FEEDING THREE-PHASE CURRENT INTO A POWER GRID
    • 用于将三相电流馈送到电网的光伏系统
    • US20110298292A1
    • 2011-12-08
    • US13204957
    • 2011-08-08
    • Sven BremickerFrank GreizerJoachim LaschinskiMatthias VictorPeter Simon
    • Sven BremickerFrank GreizerJoachim LaschinskiMatthias VictorPeter Simon
    • H02M7/42
    • H02J3/383H01L31/02021Y02E10/563Y10T307/707
    • 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.
    • 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。
    • 10. 发明授权
    • Inverter comprising normally conductive gate-controlled semiconductor switches
    • 逆变器包括正常导通的门控半导体开关
    • US08194429B2
    • 2012-06-05
    • US12643142
    • 2009-12-21
    • Jens FriebeOliver PriorFrank GreizerMatthias VictorSven Bremicker
    • Jens FriebeOliver PriorFrank GreizerMatthias VictorSven Bremicker
    • H02M7/5387
    • H03K17/063H02M1/32H03K17/162H03K17/20H03K2017/066H03K2017/6875Y02E10/56
    • An inverter has two input lines; an inverter bridge connected between the input lines and including at least one half-bridge having two normally conductive gate-controlled semiconductor switches; a controller which supplies control voltages to the gates of the semiconductor switches in an operative state of the inverter; and a DC voltage source for supplying an auxiliary control voltage to the gates of the semiconductor switches in an inoperative state of the inverter so as to hold the inverter bridge in a non-conductive state between the input lines. The DC voltage source has a charging unit connected between the input lines in series with a further normally conductive gate-controlled semiconductor switch, and charging a storage unit for electric charge, which is connected to the gate of the further semiconductor switch such that this switch becomes non-conductive, when the storage unit has been sufficiently charged for providing the auxiliary control voltage.
    • 变频器有两条输入线; 连接在所述输入线之间并且包括具有两个正常导电的栅极控制的半导体开关的至少一个半桥的逆变桥; 控制器,其在所述逆变器的操作状态下向所述半导体开关的栅极提供控制电压; 以及直流电压源,用于在逆变器的非工作状态下向半导体开关的栅极提供辅助控制电压,以便将反相器桥保持在输入线之间的非导通状态。 直流电压源具有连接在与另一正常导电的栅极控制半导体开关串联的输入线之间的充电单元,并且对连接到另外的半导体开关的栅极的电荷的存储单元进行充电,使得该开关 当存储单元充分充电以提供辅助控制电压时,变得不导通。