公开(公告)号：US12264401B2

公开(公告)日：2025-04-01

申请号：US18543235

申请日：2023-12-18

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk ,  Christian Hardt

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

Abstract: 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.

公开(公告)号：US20230335999A1

公开(公告)日：2023-10-19

申请号：US18337543

申请日：2023-06-20

Applicant: SMA Solar Technology AG

Inventor： Christian Hardt ,  Andreas Falk

IPC: H02J3/18 ,  H02J3/38

CPC classification number: H02J3/381 ,  H02J3/18 ,  H02J2300/24

Abstract: The disclosure describes a method for operating an energy supply installation which is connected to an AC supply grid via a transformer, and exchanges electrical power with the AC supply grid via the transformer. The transformer is connected on a first side to the AC supply grid and on a second side to an AC installation grid of the energy supply installation, wherein the energy supply installation has at least one inverter which exchanges electrical power between a DC unit on the DC side of the inverter and the AC installation grid on the AC side of the inverter. The method includes receiving at least one parameter of the power conversion of the at least one inverter by an installation controller, determining a setpoint AC voltage for the AC installation grid by the installation controller according to the parameter, transmitting the setpoint AC voltage to the transformer.

公开(公告)号：US20220231513A1

公开(公告)日：2022-07-21

申请号：US17716067

申请日：2022-04-08

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk ,  Dirk Hermeling

IPC: H02J3/38 ,  H02J7/35

Abstract: The application relates to a method for operating an energy generating system including a plurality of DC sub-generators which are connected in parallel with one another and in each case to a shared DC load via a DC/DC converter. Each of the DC sub-generators includes a DC source which is connected, via at least one fuse that is connected in series to the DC source, to the particular DC/DC converter that is assigned to the corresponding DC sub-generator. The method includes monitoring each of the DC sub-generators for a fault, in particular a short-circuit fault; —wherein, if the monitoring of the DC sub-generators indicates a faulty DC sub-generator; —the DC/DC converters that are not assigned to the faulty DC sub-generator are operated at a common total current IRest which corresponds to a default value. The application also relates to an energy generating system which is designed and configured to carry out the method.

公开(公告)号：US20210359367A1

公开(公告)日：2021-11-18

申请号：US17388226

申请日：2021-07-29

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk

IPC: H01M50/209 ,  H01M10/613 ,  H01M10/663

Abstract: A container for an energy supply system includes a first section configured to accommodate an air-conditioning unit and/or a control circuit during transport of the container and operation of the energy supply system, and a second section configured to accommodate an energy conversion unit during transport of the container. The energy conversion unit is configured to be selectively removed from the container, and the second section includes a fixing structure for shelf units, such that, after the energy conversion unit has been removed from the container, the shelf units are configured to be installed on the fixing structure and can be fitted with storage modules.

公开(公告)号：US11005270B2

公开(公告)日：2021-05-11

申请号：US16727215

申请日：2019-12-26

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk ,  Christian Hardt ,  Neidhardt Bechtel ,  Dirk Hermeling

IPC: H02J3/46 ,  H02J3/32

Abstract: A method for operating an island system is disclosed. The island system includes a group of voltage-controlling converters, wherein each of the voltage-controlling converters of the group are configured to convert power of respectively connected regenerative power sources into AC power in accordance with a respective frequency-power characteristic curve. The island system also includes a load having a power consumption that depends on a voltage amplitude of an AC voltage of the island system, and a control unit that is configured to transmit a default value of the voltage amplitude to the group of voltage-controlling converters. The method adapts the power to be consumed by the load.

公开(公告)号：US10193284B2

公开(公告)日：2019-01-29

申请号：US15892720

申请日：2018-02-09

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk ,  Sebastian Umlauf

IPC: H01R4/60 ,  H01R25/16 ,  H02G5/00 ,  H02G5/02 ,  H02B1/20

Abstract: An apparatus for establishing a multi-phase electrical connection including at least one connecting element per phase, wherein each connecting element comprises two busbars and a number (N) of substantially identical, flexible conductors arranged in parallel with one another in a plane, said conductors electrically conductively connecting the two busbars. Further, a spacing (a) of geometric center points of cross sections of adjacent conductors from one another is at least twice as large as an equivalent diameter (d, dequiv) of one of the conductors, and each busbar respectively comprises a connection region for electrical and mechanical connection of the connecting element to an electrical device. In addition, the connecting elements are arranged in parallel with one another and the geometric center points of the cross sections of adjacent conductors of adjacent connecting elements, which are assigned to different phases, have a spacing (b) from one another that is in each case at most half the product of the number (N) of electrical conductors minus 1 multiplied by the spacing (a) of the conductors of a phase from one another.

公开(公告)号：US20190013420A1

公开(公告)日：2019-01-10

申请号：US16108852

申请日：2018-08-22

Applicant: SMA Solar Technology AG

Inventor： Karl Nesemann ,  Andreas Falk

IPC: H01L31/02 ,  H02J3/38 ,  H02S40/36

Abstract: A circuit for limiting the voltage of a photovoltaic string divided into a first section and a second section of a series circuit of solar modules, includes a first terminal for connection to a first end of the first section, a second terminal for connection to a first end of the second section and a third terminal for connection to a second end of the second section. The circuit also includes a bypass switch, which is connected at one end to the first terminal and at the other end to the third terminal and a disconnect switch, which is connected at one end to the first terminal and at the other end to the second terminal. The circuit has a controller for actuating the bypass switch and the disconnect switch, wherein the controller is configured to determine a first threshold value UUL and a second, lower threshold value ULL depending on a switch voltage UOC dropped across the disconnect switch in an open state and taking into account the number of solar modules in the first section and in the second section.

公开(公告)号：US09917443B2

公开(公告)日：2018-03-13

申请号：US14535462

申请日：2014-11-07

Applicant: SMA Solar Technology AG ,  Adensis GmbH

Inventor： Andreas Falk ,  Bernhard Beck ,  Aaron Philipp Gerdemann ,  Frank Niebling

IPC: H02J3/38 ,  H02M7/5387

CPC classification number: H02J3/38 ,  H02J3/383 ,  H02M7/53871 ,  Y02E10/563 ,  Y10T307/609

Abstract: The disclosure relates to a method for operating a photovoltaic system for feeding a medium-voltage grid, wherein the photovoltaic system has a photovoltaic generator including a plurality of photovoltaic modules, at least one inverter and at least one medium-voltage transformer. The medium-voltage transformer is connected on the primary side directly to a low-voltage AC output of the inverter, the inverter is connected to the photovoltaic generator via a DC input, and the inverter permits reverse currents from the low-voltage AC output to the DC input. The method is characterized by the fact that in the event that there is insufficient generation of electric power for the feed by the photovoltaic modules, the inverter remains connected on the AC side to the medium-voltage grid via the medium-voltage transformer, and remains connected on the DC side to the photovoltaic generator.

公开(公告)号：US20160226256A1

公开(公告)日：2016-08-04

申请号：US15072761

申请日：2016-03-17

Applicant: SMA Solar Technology AG

Inventor： Andreas Falk ,  Franz Lukas

IPC: H02J3/38 ,  H02M1/32 ,  H02M7/44

CPC classification number: H02J3/383 ,  H01L31/02021 ,  H02H3/023 ,  H02H7/20 ,  H02M1/32 ,  H02M7/44 ,  H02S40/32 ,  Y02E10/563

Abstract: A circuit arrangement for a photovoltaic inverter includes two bus lines, input terminals for connecting at least one photovoltaic generator to the bus lines, respectively, and at least one DC/AC converter connected to the bus lines. The circuit arrangement further includes a disconnector between each DC/AC converter and the bus lines, respectively, and at least one short-circuit path for short-circuiting a voltage between the bus lines, wherein a short-circuit switch is arranged in the short-circuit path, wherein the at least one short-circuit path runs between the bus lines upstream of all disconnectors between the input terminals and the disconnectors, and wherein the short-circuit switch in the at least one short-circuit path between the bus lines is connected in series with a fuse. Still further, the circuit arrangement includes at least one further short-circuit path for short-circuiting the voltage between the bus lines, wherein a short-circuit switch likewise is arranged in the at least one further short-circuit path

Abstract translation: 用于光伏逆变器的电路装置包括两条总线，分别用于将至少一个光伏发电机连接到总线的输入端和连接到总线的至少一个DC / AC转换器。 电路装置还包括分别在每个DC / AC转换器和总线之间的隔离开关，以及用于短路总线之间的电压的至少一个短路路径，其中在短路中布置短路开关 其中所述至少一个短路路径在所述输入端子和所述断路器之间的所有断路器上游的总线线路之间延伸，并且其中所述至少一条短路路径中的所述短路开关在所述总线线路之间 与保险丝串联连接。 此外，电路装置还包括用于使总线之间的电压短路的至少一个另外的短路路径，其中短路开关同样布置在至少一个另外的短路路径

公开(公告)号：US12283808B2

公开(公告)日：2025-04-22

申请号：US18108751

申请日：2023-02-13

Applicant: SMA Solar Technology AG

Inventor： Martin Putz ,  Andreas Falk

IPC: H02H7/20 ,  H02H1/00 ,  H02S40/36 ,  H02S50/10

Abstract: The disclosure relates to a device and associated method for electrolysis from photovoltaically generated DC power, including an electrolyzer and a DC/DC converter. The DC/DC converter feeds DC power to the electrolyzer, the DC power is generated by a photovoltaic (PV) sub-generator connected to the DC/DC converter. The PV sub-generator is connected to the DC/DC converter via a first disconnector that is coupled to an isolation monitoring structure in such a way that closure of the first disconnector requires a successful check for sufficient isolation of the PV sub-generator. The PV sub-generator has a main string and a second disconnector arranged between the main string and the first disconnector. The second disconnector is coupled to a fault current monitoring circuit in such a way that the second disconnector is opened in the event that a predefinable limit value of the fault current is exceeded.