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1. 发明申请

US20230070123A1 3-PHASE PV INVERTER WITH 2-PHASE ISOLATED OPERATION IN THE EVENT OF A NETWORK FAULT 有权
公开(公告)号：US20230070123A1
公开(公告)日：2023-03-09
申请号：US17985243
申请日：2022-11-11
申请人： SMA Solar Technology AG
发明人： Alexander Unru , Burkard Müller
IPC分类号： H02J3/38 , H02M7/487 , H02M7/5387 , H02M1/32 , H02M1/00
摘要： The disclosure relates to an inverter including a first bridge branch with a first phase output, a second bridge branch with a second phase output, a third bridge branch with a third phase output, wherein the phase outputs of the bridge branches can each be connected to a phase conductor of a three-phase power distribution network. The inverter is configured, in a normal operating mode of the three-phase power distribution network and/or of a higher-level power supply network connected thereto, to connect the phase outputs to the relevant phase conductor and, in the event of a fault in the three-phase power distribution network and/or in the higher-level power supply network connected thereto, to disconnect the three-phase power distribution network from the higher-level power supply network via a network disconnector, to disconnect the first phase output from the first phase conductor by means of a switching unit and to connect same to a neutral conductor of the three-phase power distribution network, and to establish a neutral potential for the neutral conductor via the first bridge branch. The disclosure further relates to a method for operating an inverter of this kind.

2. 发明申请

US20220368243A1 METHOD FOR SUPPLYING A DC LOAD, ENERGY CONVERSION SYSTEM AND ELECTROLYSIS SYSTEM 有权
公开(公告)号：US20220368243A1
公开(公告)日：2022-11-17
申请号：US17876664
申请日：2022-07-29
申请人： SMA Solar Technology AG
发明人： Alexander Unru , Marcel Kratochvil , Ralf Juchem
IPC分类号： H02M7/04 , H02J5/00 , C25B9/65
摘要： The disclosure is directed to a method for supplying power to a DC load using an energy conversion system that includes first and second rectifiers and a transformer system. Each of the rectifiers contains an AC-DC converter connected to an AC grid via a separate secondary side of the transformer system. The transformer system provides a first AC voltage having a first voltage amplitude Û1 on the first secondary side and a second AC voltage having a second voltage amplitude Û2 on the second secondary side, wherein a value of the second voltage amplitude Û2 exceeds a corresponding value of the first voltage amplitude Û1. The method includes operating the first rectifier with a first non-zero power flow P1 to supply power to the DC load when an input voltage UDC,load at the input of the DC load falls below a voltage threshold value UTH: wherein a second power flow P2 through the second rectifier is suppressed, and operating the second rectifier with a second non-zero power flow P2 to supply power to the DC load when the input voltage UDC,load at the input of the DC load reaches or exceeds the voltage threshold value UTH. The application likewise discloses an energy conversion system for performing the method and an electrolysis system.

3. 发明申请

US20220360214A1 METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING AN ARC AND PHOTOVOLTAIC (PV) INVERTER HAVING A CORRESPONDING CIRCUIT ARRANGEMENT 有权
公开(公告)号：US20220360214A1
公开(公告)日：2022-11-10
申请号：US17865606
申请日：2022-07-15
申请人： SMA Solar Technology AG
发明人： Marcel Kratochvil , Rainer Schmitt , Torsten Otto , Sybille Pape
IPC分类号： H02S50/00 , H02S40/36 , H02S40/32
摘要： The disclosure describes a method for detecting an arc in a direct-current (DC) circuit comprising a DC load, a DC source supplying the DC load, and a circuit arrangement arranged between the DC source and the DC load. A power flow P between an input and an output of the circuit arrangement is suppressed by means of a switching circuit through cyclical interruption such that the power flow P is enabled in an active time window with the first period Δt1 and the power flow P is suppressed in an inactive time window with the second period Δt2. Via detection of an input current Iin flowing at the input and/or an input voltage Uin applied to the input and comparison of values of the input current Iin and/or input voltage Uin detected in the inactive time window with a current threshold value ITH or a voltage threshold value UTH an arc presence criterion is signaled if the input current Iin detected in the inactive time window falls below the current threshold value ITH and/or the input voltage Uin detected in the inactive time window does not exceed the voltage threshold value UTH. The application also describes a circuit arrangement for detecting an arc and a photovoltaic (PV) inverter including such a circuit arrangement.

4. 发明申请

US20220304184A1 INVERTER OF COMPACT DESIGN 有权
公开(公告)号：US20220304184A1
公开(公告)日：2022-09-22
申请号：US17831867
申请日：2022-06-03
申请人： SMA Solar Technology AG
发明人： Klaus Rigbers , Thomas Wappler , Gerrit Braun , Andreas Knobloch , Matthias Rehbein
IPC分类号： H05K7/20 , H05K7/14 , H05K1/18
摘要： An inverter with a rated power of at least 3 kVA includes a first assembly which includes a first printed circuit board and a DC/AC converter stage, and a second assembly which includes a second printed circuit board and an EMC filter for the DC/AC converter stage. The first printed circuit board is mounted on a heat sink and lies substantially flat on the heat sink, and the DC/AC converter stage has converter components which comprise power semiconductors, chokes and link circuit capacitors. The chokes and the link circuit capacitors are arranged together on one side of the first printed circuit board, and the heat sink is arranged on the opposite side of the first printed circuit board, and the chokes and/or the power semiconductors are thermally connected to the heat sink via the first printed circuit board and a thermally conductive material arranged between the first printed circuit board and the heat sink. The second printed circuit board is arranged on the side of the first printed circuit board opposite the heat sink, and a metal sheet is arranged between the first assembly and the second assembly, and the second printed circuit board is mounted on the metal sheet.

5. 发明申请

US20220231513A1 METHOD FOR OPERATING AN ENERGY GENERATING SYSTEM, AND ENERGY GENERATING SYSTEM COMPRISING SAID METHOD 有权
公开(公告)号：US20220231513A1
公开(公告)日：2022-07-21
申请号：US17716067
申请日：2022-04-08
申请人： SMA Solar Technology AG
发明人： Andreas Falk , Dirk Hermeling
IPC分类号： H02J3/38 , H02J7/35
摘要： 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.

6. 发明申请

US20220231455A1 METHOD FOR LOCKING A CONNECTOR ARRANGED ON A CHARGING CABLE TO A MATING CONNECTOR, AND CHARGING STATION FOR CARRYING OUT THE METHOD 有权
公开(公告)号：US20220231455A1
公开(公告)日：2022-07-21
申请号：US17716023
申请日：2022-04-08
申请人： SMA Solar Technology AG
发明人： Raimund Thiel , Jens Klein
IPC分类号： H01R13/627 , H01R13/622 , H01R43/26 , B60L53/18 , B60L53/16 , B60L53/60
摘要： A method for locking a connection between a connector and a mating connector arranged on an electric vehicle is disclosed. The connector is arranged on a charging cable connected to a charging post of a charging station, such as a charging cable fixedly connected to a charging post of a charging station. The connector is associated with a first locking element, and the mating connector is associated with a second locking element, wherein the first locking element and the second locking element cooperate to lock the connection between the connector and the mating connector, and each have an activated state and a deactivated state. The method includes operating the first locking element associated with the connector in an activated state in a first operating mode of the charging station to lock the connection between the connector and the mating connector when the second locking element associated with the mating connector is activated. The method further includes operating the first locking element associated with the connector in a deactivated state in a second operating mode of the charging station to unlock the connection between the connector and the mating connector when the second locking element associated with the mating connector is activated. Additionally described is a charging station which is suitable and set up for carrying out the method.

7. 发明授权

US11342104B2 Inductor arrangement comprising an insert 有权
公开(公告)号：US11342104B2
公开(公告)日：2022-05-24
申请号：US16171866
申请日：2018-10-26
申请人： SMA Solar Technology AG
发明人： Mariusz Gwadera , Jakub Hachlowski , Mariusz Walczak , Zajac Tomasz
IPC分类号： H01F30/16 , H01F27/32 , H01F27/29 , H01F17/06 , H01F27/28 , H01F5/04
摘要： A inductor arrangement has a toroidal core with a central opening, a winding which is arranged around the core and has two winding ends, and an electrically insulating insert which is inserted into the central opening in a clamping manner. Here, the winding ends are inserted into the insert in a clamping manner.

8. 发明申请

US20220090826A1 SOLAR MODULE, SOLAR MODULE-INTEGRABLE ASSEMBLY AND POWER GENERATION SYSTEM 有权
公开(公告)号：US20220090826A1
公开(公告)日：2022-03-24
申请号：US17540430
申请日：2021-12-02
申请人： SMA Solar Technology AG
发明人： Raimund Thiel , Peter Lahnor , Simon Butterweck
IPC分类号： F24S50/20 , H04J3/06 , H02S20/23
摘要： The disclosure relates to a solar module, which includes a plurality of solar cells which are interconnected to generate a direct-voltage power at module terminals, and a receiving unit for receiving an accurate time signal. The solar module further includes a communication unit for the synchronous transmission of the received accurate time signal to an inverter. The inverter is connected to the solar module by means of direct-voltage lines. The disclosure also relates to an assembly that can be integrated into a solar module, and to an energy generation system having a solar module of this type.

9. 发明授权

US11228277B2 Method and device for detecting a maximum system power output of a photovoltaic system 有权
公开(公告)号：US11228277B2
公开(公告)日：2022-01-18
申请号：US16792375
申请日：2020-02-17
申请人： SMA Solar Technology AG
发明人： Mathias Buenemann
IPC分类号： H02J1/00 , H02J3/00 , H02S50/00 , H02J3/38
摘要： A method for determining a system power, which is maximally possible at a point in time, of a photovoltaic system, comprising a plurality of photovoltaic generators, wherein the photovoltaic system is not operated at the maximally possible system power at the point in time, and wherein at least some of the photovoltaic generators of the plurality of photovoltaic generators are operated at different operating points at the point in time, is disclosed. The method and associated apparatus includes defining a mapping between the different operating points of the individual photovoltaic generators and virtual operating points of a standard generator, determining virtual operating points of a standard generator corresponding to the different operating points of the individual photovoltaic generators based on the mapping, determining a characteristic curve of the standard generator from the virtual operating points of the standard generator, determining a maximum of the characteristic curve, and determining the maximally possible system power at the point in time from the maximum of the characteristic curve of the standard generator.

10. 发明授权

US11221356B2 Single-fault-tolerant isolation resistance determination in a photovoltaic system 有权
公开(公告)号：US11221356B2
公开(公告)日：2022-01-11
申请号：US16713173
申请日：2019-12-13
申请人： SMA Solar Technology AG
发明人： Martin Putz
IPC分类号： G01R27/18 , G01R27/02 , H02S50/10
摘要： A method for a single-fault-tolerant determination of an isolation resistance of a photovoltaic system including an inverter and a solar generator connected thereto is disclosed. The isolation resistance is determined as a function of a test voltage drop in a resistor network, wherein the resistor network is connected to a variable voltage source by way of a first terminal, to a first pole of the solar generator by way of a second terminal and to a ground terminal of the inverter via an isolation relay by way of a third terminal. A capacitor is disposed between the ground terminal and the first pole of the solar generator. The method includes a) applying a first DC voltage value to the first terminal when the isolation relay is closed using the variable voltage source, b) applying a second DC voltage value to the first terminal when the isolation relay is closed using the variable voltage source, c) generating an AC voltage at the first terminal using the variable voltage source when the isolation relay is closed, d) generating the AC voltage at the first terminal using the variable voltage source when the isolation relay is open, and e) testing a function of the isolation relay by comparing an amplitude of the test voltage between the acts c) and d).

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