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公开(公告)号：US20240332981A1
公开(公告)日：2024-10-03
申请号：US18743411
申请日：2024-06-14
发明人： Marcel Kratochvil , Alexander Unru
CPC分类号： H02J3/381 , H02J15/008 , H02J2300/24
摘要： A device for converting electrical power between a PV generator and an electrolyzer. The device has an inverter arranged between a first side thereof and a transformer, and an active rectifier is arranged between the transformer and a second side of the device, such that an AC side of the active rectifier and an AC side of the inverter are connected to one another via the transformer. The inverter is configured to convert a first DC voltage on the DC side of the inverter into a first AC voltage on the AC side of the inverter and the active rectifier is configured designed to convert a second AC voltage on the AC side of the active rectifier into a second DC voltage on the DC side of the active rectifier. The device has a controller configured to influence a power flow between the first side and the second side of the device from a connected PV generator to a connected electrolyzer by adjusting an AC/DC transformation ratio of the active rectifier between the second AC voltage and the second DC voltage.
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公开(公告)号：US20240322572A1
公开(公告)日：2024-09-26
申请号：US18735348
申请日：2024-06-06
发明人： Björn Oliver Winter
CPC分类号： H02J3/388 , G01R19/2513 , H02J3/001
摘要： The disclosure is directed to an island network detection method using a voltage-impressing converter, and includes determining the frequency and phase of a voltage curve of a sub-network connected to a network connection point of the converter, and generating a voltage curve using a bridge circuit of the converter with the determined frequency. The method also includes determining a correlation between a first temporal variation and a second temporal variation of an output exchanged by the converter with the sub-network, and detecting an island network if the determined correlation undershoots a specified correlation measurement.
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公开(公告)号：US12088249B2
公开(公告)日：2024-09-10
申请号：US17746040
申请日：2022-05-17
发明人： Edwin Kiel
摘要： A method and associated system for determining an operating parameter of a PV installation having a plurality of PV modules is disclosed. The PV modules each include a shutdown apparatus connected to a transmission apparatus of the PV installation and has a feed-in operation and a shutdown operation. At least one PV module is equipped with a power-optimizing device which is configured to set an operating point of the PV module in an optimizing operation. The method includes determining a first total electrical power of the PV modules in a non-optimizing operation of the at least one power-optimizing device and in the feed-in operation of the shutdown apparatuses, and determining a second total electrical power of the PV modules in the optimizing operation of all the power-optimizing devices and in the feed-in operation of the shutdown apparatuses. The method also includes determining the operating parameter using a difference between the determined first total electrical power and the determined second total electrical power.
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4.发明公开公开(公告)号：US20240247390A1
公开(公告)日：2024-07-25
申请号：US18627548
申请日：2024-04-05
发明人： Alexander Unru , Andreas Falk , Ralf Juchem
IPC分类号： C25B15/02 , H01M8/04082 , H01M8/04303 , H01M8/04858 , H01M8/0656 , H02M3/04 , H02M7/44
CPC分类号： C25B15/02 , H01M8/04201 , H01M8/04303 , H01M8/04917 , H01M8/0656 , H02M3/04 , H02M7/44
摘要： The application describes a method for operating an electrolyzer and a fuel cell which, in parallel with one another, are connected to a device-side converter connection of a common bidirectional converter, on
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公开(公告)号：US12044735B2
公开(公告)日：2024-07-23
申请号：US17231390
申请日：2021-04-15
发明人： Steffen Aust , Martin Putz
IPC分类号： G01R31/327 , G01R27/20 , G01R31/52
CPC分类号： G01R31/3277 , G01R27/205 , G01R31/52
摘要： A method for measuring insulation resistance in an inverter that has a DC link circuit and a bridge circuit, connected to the DC link circuit, for driving an AC current via a bridge center tap is disclosed. The method includes connecting the bridge center tap to a grounding point, successively connecting, by way of the bridge circuit, the bridge center tap that is connected to the grounding point to two points of the ungrounded DC link circuit that differ in terms of voltage, and measuring the current flowing from the two points that differ in terms of voltage to the grounding point. The two points of the ungrounded DC link circuit that differ in terms of voltage are selected from a group of points that includes at least one intermediate voltage point of the DC link circuit in addition to two end points of the DC link circuit, such that the voltages present between the two points that differ in terms of voltage and the grounding point do not exceed a predefined voltage limit value.
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6.发明公开公开(公告)号：US20240128857A1
公开(公告)日：2024-04-18
申请号：US18396810
申请日：2023-12-27
发明人： Alexander Unru , Eike Rafael Koch
摘要： A method for starting an electrolysis system is disclosed. A supply circuit has an AC terminal connected to an AC grid, a DC terminal connected to an electrolyzer, and an AC/DC converter arranged between the AC terminal and the DC terminal. The method includes charging an output capacitor connected to a DC converter terminal of the AC/DC converter, by operating the electrolyzer in a reverse mode, while the AC/DC converter is connected to the electrolyzer and disconnected from the AC grid, connecting the AC/DC converter to the AC grid, reversing the operation of the electrolyzer from the reverse mode to a normal mode as a DC load, to suppress a power flow between the AC grid and the electrolyzer, and operating the electrolyzer in the normal mode with electrical power drawn from the AC grid which is rectified by the AC/DC converter.
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公开(公告)号：US20240039915A1
公开(公告)日：2024-02-01
申请号：US18483544
申请日：2023-10-10
发明人： Marek Seeger , Stefan Börger , Dirk Schlote , Jens Klein , Raimund Thiel , Mirko Wischer , Ingo Hanke
CPC分类号： H04L63/0884 , H04L63/061 , H04L63/166 , H04L9/0838 , H04L9/3226 , H04L2463/082
摘要： A method for logging a user into a device for a power generation plant, using a service gateway, wherein an access authorization of the user for the device is stored on the service gateway, is disclosed. The method includes authenticating the user on the service gateway, sending a device access request using an access device from the user to the service gateway specifying an identifier of the device for the power generation plant, and comparing a device secret stored on the service gateway with a copy of the device secret generated using the device secret and stored on the device, via an SRP protocol.
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8.发明公开公开(公告)号：US20240035298A1
公开(公告)日：2024-02-01
申请号：US18485341
申请日：2023-10-12
发明人： Andreas Falk
CPC分类号： E04H5/04 , H05K9/0081
摘要： The disclosure relates to a platform stack for the space-saving configuration of an energy conversion installation, comprising at least two platforms stacked one over another to form the platform stack, wherein each of the platform is configured to position a skid with a respective converter unit of the energy conversion installation such that they are stacked one on top of the other on via the two platforms. The platforms each include a frame structure having a storage surface for the skid, and have alignment elements on a first side and support posts on a second side of the frame structure, opposite the first side.
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公开(公告)号：US20230393179A1
公开(公告)日：2023-12-07
申请号：US18453599
申请日：2023-08-22
发明人： Martin Putz
CPC分类号： G01R27/025 , G01R27/10 , G01R31/40
摘要： To measure an insulation resistance of a DC voltage source connected to a split intermediate circuit, a midpoint potential of the DC voltage source is shifted by different operation of two voltage converters by way of which two poles of the DC voltage source are each connected to one of two parts of the split intermediate circuit. A change in a residual current across all lines that carry a current flowing across the intermediate circuit from the DC voltage source, resulting from the shifting of the midpoint potential of the DC voltage source, is measured.
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公开(公告)号：US20230380088A1
公开(公告)日：2023-11-23
申请号：US18358325
申请日：2023-07-25
发明人： Steffen Müller
CPC分类号： H05K5/0221 , H02M7/003 , H05K5/0008 , H05K5/03 , H05K5/068
摘要： An explosion-proof housing for a power electronics unit includes a housing pan and a cover that closes the housing pan via a seal, wherein the cover and the housing pan are pressed against each other at two opposing sides formed by edge regions of the cover and the housing pan via a plurality of fasteners that are configured to be released by rotation and that engage in latching structures. The plurality of fasteners are arranged in a central third of the respective sides. The explosion-proof housing can be used, for example, for a photovoltaic inverter.
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