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1.发明公开公开(公告)号：US20230253776A9
公开(公告)日：2023-08-10
申请号：US17432769
申请日：2019-12-06
发明人： Hendrik GLOES , Martin GESKE , Thomas BRÜCKNER
CPC分类号： H02H3/023 , H02H1/0015 , H02H7/1222
摘要： An electrical system forming part of a solar power plant is described. The electrical system includes a plurality of photovoltaic (PV) panels, a power converter, and a controller. In response to a detected electric arc on the DC side of the power converter, the controller is configured to enable a short circuit state of the power converter by controlling semiconductor switches of the power converter (e.g., turning on some or all of the semiconductor switches) to create a short circuit between DC input terminals of the power converter. The short circuit path though the power converter will extinguish the detected electric arc in the connected DC circuit.
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公开(公告)号：US11437895B2
公开(公告)日：2022-09-06
申请号：US16184348
申请日：2018-11-08
IPC分类号： H02K11/40 , H02K11/02 , H02K1/18 , H02P29/024 , H02K11/01 , H02K11/33 , H02K5/22 , H02K5/24 , H03H7/06
摘要： The invention relates to a power system that includes an electrical machine, (e.g., a motor or generator). The electrical machine has a stator with a stator winding connected to a power converter. The power system includes an assembly to reduce, and optionally eliminate, common mode currents between the electrical machine and the power converter. The assembly includes a stator frame connected to ground potential and an electrical insulator (e.g., a plurality of stator mounts) located between the stator frame and the stator.
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公开(公告)号：US10693352B2
公开(公告)日：2020-06-23
申请号：US15611024
申请日：2017-06-01
发明人： Jacob Thomas Nies
摘要： A stator for an electrical machine is described. The stator includes a plurality of axially adjacent generally annular laminations. An axially extending coolant passageway through which a coolant fluid flows in use, extends through the stator. A plurality of axially spaced sealing recesses are provided. Each sealing recess is located between a pair of laminations and is in open communication with the surface of the axially extending coolant passageway. Each sealing recess has an axial width greater than the gap between the facing planar surfaces of axially adjacent laminations and is at least partially filled with a cured resin material to define a plurality of axially spaced seals.
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公开(公告)号：US10483746B2
公开(公告)日：2019-11-19
申请号：US15779997
申请日：2016-11-28
发明人： Thomas Kolbe , Martin Bansemir , Jan Kamm
IPC分类号： H02G15/115 , H01R4/70 , H02G5/02 , H02G15/117 , H01R4/22 , H01R4/60
摘要： The invention relates to a cover to enclose a longitudinal section of at least one electrical conductor and prevent the formation of an arc or a flashover. The cover has at least two cover parts made of an electrically insulating material. A first cover part and a second cover part each have at least one passage opening. Each passage opening has an electrical conductor guided through it, so that no gap opening, or only a small gap opening remains between the outside surface of the conductor and a bordering wall of the passage opening. Moreover, the cover has at least one connection location. At this connection location, two of the cover parts that are present lie against one another in a force-fit and/or positive-fit manner and form a nondestructively detachable connection. This ensures accessibility to the protected longitudinal section.
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公开(公告)号：US10333388B2
公开(公告)日：2019-06-25
申请号：US15762850
申请日：2016-09-30
发明人： Helmut Jebenstreit , Frank Wothe , Kai Niemann
IPC分类号： H02M1/32 , H02M7/483 , H02M1/088 , H02M7/219 , H02M7/5387
摘要： A control device and method for large power converters having a high number of power cells may contain power semiconductor switching elements, receive commands from a central control unit, and send information to the central control unit. The control device comprises multiplexer/demultiplexer device(s), which comprises an uplink port for connection to the central control unit, a plurality of downlink ports for direct connection to a communications interface of an associated power cell, and a communications control and management module. The communications control and management module may extract information from a transmit frame received from the central control unit via the uplink port, may feed this information to the corresponding downlink port for the relevant power cell , may insert response information received from particular power cells into a receive frame, and may send this via the uplink port to the central control unit.
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公开(公告)号：US10250160B2
公开(公告)日：2019-04-02
申请号：US15789482
申请日：2017-10-20
发明人： Kamran Jalili
摘要： An inverter and method of controlling an inverter, which is connected between a photovoltaic generator and a power supply network for ride-through of a network fault, is disclosed. A voltage dip is detected in the network voltage and the voltage of a DC voltage link of the inverter is monitored. When the DC link voltage exceeds an upper limit value, an operating mode for ride-through of the network fault is started. The upper limit value corresponds to a saturation voltage in the specific Iac/Udc characteristic curve of the inverter, above which the maximum AC output current of the inverter decreases. In the FRT operating mode, an energy dissipation device dissipates power from the DC voltage link and is controlled to keep the DC link voltage within a range below the saturation voltage.
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公开(公告)号：US10233892B2
公开(公告)日：2019-03-19
申请号：US14374673
申请日：2013-01-24
摘要： This hydrokinetic rotor is arranged to be rotated by a flow of a liquid. This rotor comprises of an inner ring, an outer ring and at least one blade extending between the inner ring and the outer ring in a radial direction (R), the inner rings and the external rings being centered on a same longitudinal axis (X).This rotor comprises of at least one radial axis extending radially between the inner ring and the outer ring, and at least one blade is movable around the respective radial axis. The rotor comprises of the limitation means of the movement in rotation of at least one blade mentioned above around its respective radial axis.
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公开(公告)号：US10135433B2
公开(公告)日：2018-11-20
申请号：US13834301
申请日：2013-03-15
发明人： Stephane Richard , Herve Cara , Jean-Marc Nicolai
摘要： The system (21) includes: a power transistor (22), a data medium (60) including data relating to the manufacturing tolerance (Tol) of at least one electric parameter of the transistor (22), an electric circuit (26) for controlling the transistor adapted so as to operate for a reference value of the parameter (VREF), an electric circuit (64) having an inductance of less than 100 nH and such that the assembly (70) formed with the circuit (64) and the transistor (22) has a value for the parameter, for which the deviation in absolute with the reference value is strictly less than the manufacturing tolerance (Tol).
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公开(公告)号：US10020652B2
公开(公告)日：2018-07-10
申请号：US14683768
申请日：2015-04-10
发明人： Eric Lewis, III
摘要： A power distribution system including first and second ac busbars connected to ac generators. A first active rectifier/inverter has ac input terminals electrically connected to the first ac busbar. A second active rectifier/inverter has ac input terminals electrically connected to the second ac busbar. A first dc interface is electrically connected to dc output terminals of the first active rectifier/inverter and a second dc interface is electrically connected to dc output terminals of the second active rectifier/inverter. The dc interfaces include reverse blocking means. A third active rectifier/inverter operates as a drive and has dc input terminals electrically connected in the parallel to dc output terminals of the first and second dc interfaces by means of an interposing dc busbar. An electric motor, that can optionally form part of a marine thruster T1, is electrically connected to ac output terminals of the third active rectifier/inverter.
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10.发明授权公开(公告)号：US10020650B2
公开(公告)日：2018-07-10
申请号：US14628764
申请日：2015-02-23
发明人： Robert Roesner , Christoph Rytz
IPC分类号： H02H3/38 , H02H1/00 , H02H3/087 , H02H3/093 , H02H7/18 , H02J7/00 , H01M10/42 , H01M10/48 , H02J1/10
CPC分类号： H02H3/38 , H01M10/425 , H01M10/48 , H01M2010/4271 , H01M2220/10 , H01M2220/20 , H02H1/0015 , H02H3/087 , H02H3/093 , H02H7/18 , H02J1/108 , H02J7/0026 , H02J7/0029 , H02J7/0083 , H02J2007/0039
摘要： A battery energy storage system is disclosed, the battery energy storage system comprising a rechargeable battery assembly for storing and providing energy and a protection system including an arc flash protection device to protect against risks due to arc flashes. The arc flash protection device comprises an overcurrent protection unit which detects overcurrent conditions indicating arc flash conditions in case of a low impedance of the battery assembly and an undervoltage protection unit which detects undervoltage conditions indicating arc flash conditions in case of a low impedance of the battery assembly, wherein upon detecting the overcurrent conditions and/or the undervoltage conditions for a predetermined minimum time period, the arc flash protection device initiates protective measures to prevent further operation of the battery assembly. An energy conversion system comprising such a battery energy storage system, which can be used for stationary and mobile energy supply or distribution applications, is also disclosed.
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