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    Circuit arrangement for balancing a split DC link
    2.
    发明授权
    Circuit arrangement for balancing a split DC link 有权

    公开(公告)号：US12074521B2

    公开(公告)日：2024-08-27

    申请号：US17886134

    申请日：2022-08-11

    申请人： SMA Solar Technology AG

    发明人： Burkard Mueller

    IPC分类号： H02M3/158 ,  H02M7/483

    CPC分类号： H02M3/158 ,  H02M7/4833

    摘要： A circuit arrangement for balancing a split DC link arranged between a first DC-voltage terminal and a second DC-voltage terminal is disclosed. The first DC-voltage terminal is connected via a first semiconductor switch to a first intermediate point that is connected via a second semiconductor switch to a bridge center point that is connected via a third semiconductor switch to a second intermediate point that is connected via a fourth semiconductor switch to the second DC-voltage terminal. A first terminal of a resonant capacitor is connected to the first intermediate point, and a second terminal of the resonant capacitor is connected to a DC-link center point via a connecting path, in which a resonant inductor is arranged in a series circuit with the third semiconductor switch, and which runs via the second intermediate point. An additional winding is magnetically coupled to the resonant inductor and a first terminal thereof is connected via a first diode to a first terminal of a countervoltage source, and a second terminal thereof is connected to a second terminal of the countervoltage source so that an energy coupled into the additional winding from the resonant inductor is discharged into the countervoltage source.

    Current inverter
    3.
    外观设计
    Current inverter 有权

    公开(公告)号：USD1037157S1

    公开(公告)日：2024-07-30

    申请号：US35513982

    申请日：2022-02-22

    申请人： SMA Solar Technology AG

    设计人： Alexander Benn ,  Christof Wetzel

    摘要： 1. Current inverter
    2. Current inverter
    3. Current inverter
    4. Current inverter
    Fig. 1.1 is a top plan view of a first embodiment of a current inverter showing the new design;
    Fig. 1.2 is a first side elevation view thereof;
    Fig. 1.3 is a front perspective view thereof;
    Fig. 1.4 is a back elevation view thereof;
    Fig. 1.5 is a front elevation view thereof;
    Fig. 1.6 is a bottom plan view thereof;
    Fig. 1.7 is a second side elevation view thereof;
    Fig. 1.8 is a back perspective view thereof;
    Fig. 2.1 is a first side elevation view of a second embodiment of a current inverter showing the new design;
    Fig. 2.2 is a back elevation view thereof;
    Fig. 2.3 is a front perspective view thereof;
    Fig. 2.4 is a second side elevation view thereof;
    Fig. 2.5 is a bottom plan view thereof;
    Fig. 2.6 is a front elevation view thereof;
    Fig. 2.7 is a top plan view thereof;
    Fig. 2.8 is a back perspective view thereof;
    Fig. 3.1 is a front perspective view of a third embodiment of a current inverter showing the new design;
    Fig. 3.2 is a bottom plan view thereof;
    Fig. 3.3 is a first side elevation view thereof;
    Fig. 3.4 is a front elevation view thereof;
    Fig. 3.5 is a top plan view thereof;
    Fig. 3.6 is a back elevation view thereof;
    Fig. 3.7 is a second side elevation view thereof;
    Fig. 3.8 is a back perspective view thereof;
    Fig. 4.1 is a bottom plan view of a fourth embodiment of a current inverter showing the new design;
    Fig. 4.2 is a front perspective view thereof;
    Fig. 4.3 is a first side elevation view thereof;
    Fig. 4.4 is a second side elevation view thereof;
    Fig. 4.5 is a back elevation view thereof;
    Fig. 4.6 is a front elevation view thereof;
    Fig. 4.7 is a top plan view thereof; and
    Fig. 4.8 is a back perspective view thereof.
    The broken lines shown depict the portions of the current inverter that form no part of the claimed design.

    Energy supply system having a coupling device
    4.
    发明授权
    Energy supply system having a coupling device 有权

    公开(公告)号：US12003104B2

    公开(公告)日：2024-06-04

    申请号：US17584982

    申请日：2022-01-26

    申请人： SMA Solar Technology AG

    发明人： Claus Allert

    IPC分类号： H02J3/00 ,  H02J3/32 ,  H02J3/38 ,  H02J9/06

    CPC分类号： H02J3/0073 ,  H02J3/32 ,  H02J3/388 ,  H02J9/062

    摘要： A local power supply system having a grid transfer point for the connection of an energy supply grid has a first transmission line for transmitting electrical energy from the grid transfer point to a first terminal for connecting an arrangement of consumers, and a second transmission line for transmitting electrical energy between the grid transfer point and a second terminal for connecting an arrangement of energy stores. A first disconnector is arranged in the first transition line between the grid transfer point and the first terminal, and a second disconnector is arranged in the second transmission line between the grid transfer point and the second terminal. A coupling device, which electrically connects the first terminal and the second terminal, has a first switch and a second switch connected in series thereto, wherein a coupling element is arranged between the two switches connected in series, which coupling element has a grounding apparatus, a phase connection apparatus, a neutral conductor connection apparatus, a connection to a diesel generator and/or an apparatus for generating a neutral conductor potential. The disclosure also relates to a method for operating such a system.

    Electrolysis device having a converter and method for providing instantaneous reserve power for an AC voltage grid
    8.
    发明授权
    Electrolysis device having a converter and method for providing instantaneous reserve power for an AC voltage grid 有权

    公开(公告)号：US11851776B2

    公开(公告)日：2023-12-26

    申请号：US17355565

    申请日：2021-06-23

    申请人： SMA Solar Technology AG

    发明人： Andreas Falk ,  Christian Hardt

    IPC分类号： C25B15/02 ,  C25B9/65 ,  H02M3/04

    CPC分类号： C25B15/02 ,  C25B9/65 ,  H02M3/04

    摘要： A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.