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    Method for the Operational Control of an Inverter
    1.
    发明申请
    Method for the Operational Control of an Inverter 有权
    变频器运行控制方法

    公开(公告)号：US20130099571A1

    公开(公告)日：2013-04-25

    申请号：US13645983

    申请日：2012-10-05

    Applicant: SMA Solar Technology AG

    Inventor： Sven Bremicker ,  Karel De Brabandere ,  Tobias Mueller

    IPC: H02M7/42

    CPC classification number: H02M7/42 ,  H02J3/383 ,  H02M1/32 ,  H02M7/487 ,  H02M2001/0025 ,  H02M2001/123 ,  Y02E10/563 ,  Y10T307/50

    Abstract: A method for the operational control of an inverter designed for DC/AC voltage conversion that has at least one direct-voltage input and that can be connected to a power supply grid via at least one alternating-voltage output, the inverter being involved in a power flow interaction with the grid in such a manner that, during operation of the inverter, a leakage current IA can occur, wherein the leakage current IA is controlled in the operational control.

    Abstract translation: 一种用于DC / AC电压转换设计的逆变器的操作控制方法，所述逆变器具有至少一个直流电压输入，并且可经由至少一个交流电压输出连接到电网，所述逆变器参与 与电网的功率流相互作用使得在逆变器工作期间可能发生泄漏电流IA，其中泄漏电流IA被控制在操作控制中。

    METHOD FOR OPERATING AN INVERTER AND INVERTER COMPRISING A SWITCH BETWEEN A CENTER POINT OF A DC LINK AND A CONNECTION FOR A NEUTRAL CONDUCTOR OF AN AC GRID
    8.
    发明申请
    METHOD FOR OPERATING AN INVERTER AND INVERTER COMPRISING A SWITCH BETWEEN A CENTER POINT OF A DC LINK AND A CONNECTION FOR A NEUTRAL CONDUCTOR OF AN AC GRID 有权
    用于操作包括DC链路的中心点和AC网络中性导体的连接之间的开关的逆变器和逆变器的方法

    公开(公告)号：US20160268923A1

    公开(公告)日：2016-09-15

    申请号：US15163329

    申请日：2016-05-24

    Applicant: SMA Solar Technology AG

    Inventor： Sven Bremicker

    IPC: H02M7/48 ,  H02M5/458

    CPC classification number: H02M7/4807 ,  H02J3/383 ,  H02M1/12 ,  H02M1/126 ,  H02M5/458 ,  H02M7/487 ,  H02M2001/123 ,  Y02E10/563

    Abstract: A method of operating a transformerless inverter connected on the input side to a generator and on the output side to a multiphase AC grid and comprising a multi-phase inverter bridge with a switch between a midpoint of a DC intermediate circuit on the input side and a terminal for a neutral conductor of the multiphase AC grid, includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch closed when first operating conditions are present, and opening the switch when there is a transition from the first operating conditions to second operating conditions different from the first operating conditions. The method further includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch open when the second operating conditions are present, and closing the switch when there is a transition from the second operating conditions to the first operating conditions.

    Abstract translation: 一种将在输入侧连接到发电机和在输出侧连接到多相交流电网的无变压器逆变器的方法，包括具有在输入侧的直流中间电路的中点与开关之间的开关的多相逆变桥， 用于多相交流电网的中性导体的端子包括通过逆变器桥将直流中间电路的电力馈送到交流电网中，当存在第一操作条件时，开关闭合，并且当存在从 第一操作条件与第一操作条件不同于第一操作条件。 该方法还包括当第二操作条件存在时，逆变器桥将交流电源从直流中间电路馈送到交流电网中，并且当从第二操作条件向第一操作转变时闭合开关 条件。

    Inverter, more specifically for photovoltaic plants
    10.
    再颁专利
    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：USRE45453E1

    公开(公告)日：2015-04-07

    申请号：US13691668

    申请日：2012-11-30

    Applicant: SMA Solar Technology AG

    Inventor： Sven Bremicker ,  Frank Greizer ,  Matthias Victor

    IPC: H02M7/5387

    CPC classification number: H02M7/515 ,  H02M1/15 ,  H02M1/44 ,  H02M7/5387 ,  H02M7/5388 ,  Y02E10/56

    Abstract: 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.

    Abstract translation: 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。

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