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公开(公告)号：US09906019B2
公开(公告)日：2018-02-27
申请号：US14277944
申请日：2014-05-15
发明人： Burkard Mueller
IPC分类号： H02J1/00 , H02M7/42 , H02M1/10 , H02M3/158 , H02J3/38 , H02J7/35 , H02J7/00 , H02M3/00 , H02M7/48 , H02M1/00
CPC分类号： H02J1/00 , H02J3/383 , H02J7/35 , H02J2007/0059 , H02M1/10 , H02M3/005 , H02M3/158 , H02M7/42 , H02M7/48 , H02M2001/007 , Y02E10/563 , Y02E10/566 , Y10T307/50 , Y10T307/549
摘要： A circuitry arrangement includes two-pole connectors for connecting a battery and a further voltage source. The plus pole of one connector and the minus pole of the other connector are directly connected to a plus pole and a minus pole of a DC voltage link. The plus and minus poles of the one connector are connected via a first parallel circuit of a switch and a diode and a first choke connected in series. The minus and plus poles of the other connector are connected via a second parallel circuit of a switch and a diode and a second choke connected in series. A connection between choke ends of the two parallel circuits is electrically conductive at least for alternating currents. The two chokes are magnetically coupled in that their winding senses on a common magnetic core are equal as viewed from the connection between the two parallel circuits.
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公开(公告)号：US09859713B2
公开(公告)日：2018-01-02
申请号：US14575025
申请日：2014-12-18
发明人： Raphael Knoke , Henning Schneider , Gerold Schulze
摘要： An inductor device has a plurality of inductor windings arranged on a common magnetic core and electrically connected, parallel to one another, to a common connection at one end of the inductor windings. The inductor windings are implemented by a one-part coil form arranged on the common magnetic core and comprising the common connection of the inductor windings. The inductor windings are wound around their common connection and the common magnetic core.
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公开(公告)号：US09831678B2
公开(公告)日：2017-11-28
申请号：US14845540
申请日：2015-09-04
发明人： Daniel Premm , Christian Schuetz
CPC分类号： H02J3/383 , H02J3/386 , H02J3/42 , H02M7/44 , Y02E10/563
摘要： In a method for black start of a power station including a plurality of inventers connectable to a local AC electrical grid, a first AC voltage is built up in the AC electrical grid by a first inverter, said first AC voltage being reduced in comparison with a rated voltage of the AC electrical grid by at least a quarter, and at least one second inverter is connected to the AC electrical grid after synchronization with the first AC voltage. After connection of the second converter, a second AC voltage, which is higher than the first AC voltage, is built up in the AC electrical grid.
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公开(公告)号：US09793812B2
公开(公告)日：2017-10-17
申请号：US15238067
申请日：2016-08-16
发明人： Jens Friebe , Oliver Prior
IPC分类号： H02M3/22 , H02M3/24 , H02M7/5387 , H02M1/44 , H02J3/38 , H02M7/48 , H02M1/42 , H02M1/00 , H02M3/158
CPC分类号： H02M3/24 , H02J3/383 , H02M1/42 , H02M1/44 , H02M3/1582 , H02M7/48 , H02M7/53871 , H02M2001/007 , Y02E10/563
摘要： A method for operating an inverter with reactive power capability that includes a voltage link circuit and an unfolding bridge, wherein poles of the voltage link circuit are configured to be selectively connected to terminals of an AC output in different configurations by means of the unfolding bridge, in order to change a polarity of the AC output relative to the voltage link circuit. The method includes in the case of a phase shift between an AC current (I) and an AC voltage (U) at the AC output reversing the direction of a current flowing via the voltage link circuit. Reversing the direction of the current flowing via the voltage link circuit includes disconnecting the AC output from the voltage link circuit, providing a freewheeling path between the terminals of the AC output, while the AC output is disconnected from the voltage link circuit, and reconnecting the AC output to the voltage link circuit with the polarity of the AC output relative to the voltage link circuit being changed by the unfolding bridge.
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公开(公告)号：USD798809S1
公开(公告)日：2017-10-03
申请号：US29525748
申请日：2015-05-01
设计人： Alexander Benn , Christof Wetzel
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公开(公告)号：US09768610B2
公开(公告)日：2017-09-19
申请号：US14997740
申请日：2016-01-18
发明人： Sebastian Bieniek , Markus Hopf
CPC分类号： H02H9/02 , G01R19/10 , H01L31/02021 , H02H3/17 , H02H3/337 , H02M7/42 , H02S40/32 , H02S50/00 , Y02E10/50
摘要： A method for leakage current compensation in a photovoltaic system includes determining a reference current flowing from at least one current-carrying line under voltage via a capacitor to earth, and generating a compensation current, having a phase and a frequency of the reference current, and having an amplitude adjusted by a negative scaling factor based on the reference current. The method further includes determining a current sum using a differential current sensor for at least a portion thereof, wherein the addends of the current sum are the currents through a complete set of current-carrying lines and the compensation current, minimizing the determined current sum by adjusting the scaling factor, and routing the compensation current through at least one other differential current sensor, such that the compensation current compensates a leakage current component of a differential current monitored by the other differential current sensor. A related device and system is also disclosed.
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公开(公告)号：US09632116B2
公开(公告)日：2017-04-25
申请号：US14599597
申请日：2015-01-19
发明人： Andre Schieleit
摘要： For inspecting polarities of poles of DC voltage sources, each pole being individually connected to one of separate input terminals of a combiner circuit, an inspection apparatus includes electric contacts each provided for one of the input terminals such that one of the poles of each DC voltage sources is each connected to one of the electric contacts, respectively. A signaling element when subjected to an electric signal emits a matching signal. One switching element per each of the at least two electric contacts forwards the electric signal if a polarity of a voltage present at the respective electric contact matches a polarity pre-set for the respective electric contact with regard to a reference potential, and blocks the electric signal if the polarity of the voltage does not match the pre-set polarity. The switching elements are electrically connected in series.
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公开(公告)号：US09625516B2
公开(公告)日：2017-04-18
申请号：US13729234
申请日：2012-12-28
CPC分类号： G01R31/2642 , G08B13/1409 , H02S50/10
摘要： A device and corresponding method for monitoring a photovoltaic system to detect an occurrence of events impairing normal operation of the photovoltaic system is provide. The photovoltaic system includes a photovoltaic generator including a first group of photovoltaic modules and a second group of photovoltaic modules being different from the first group. The device includes a first and a second pair of coupling means, both pairs including signal coupling-in means for coupling a test signal into the photovoltaic generator, and a signal coupling-out means for coupling out a response signal from the photovoltaic generator, the first pair of coupling means configured to selectively detect the occurrence of the events in the first group of photovoltaic modules, and the second pair of coupling means configured to selectively detect the occurrence of the events in the second group of photovoltaic modules.
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公开(公告)号：US09614427B2
公开(公告)日：2017-04-04
申请号：US14683301
申请日：2015-04-10
发明人： Niels Berger , Tomasz Napierala , Stefan Buchhold , Julia Pinne , Frank Rueckmann , Henrik Wolf
CPC分类号： H02M1/00 , H02J3/385 , H02M1/44 , H02M3/1584 , H02M7/44 , H02M7/48 , H02M2001/007 , H02M2001/0074 , Y02E10/58
摘要： An inverter includes a DC/AC converter, a DC intermediate circuit on the direct current input side of the DC/AC converter, multiple DC/DC converters connected in parallel to one another on the output side to the DC intermediate circuit, multiple inputs each coupled to one of the DC/DC converters, and an EMC filter connected between the inputs and the DC/DC converters. The EMC filter includes chokes in all current-carrying lines between the inputs and the DC/DC converters and filter capacitors between the inputs and the DC/DC converters leading from all the current-carrying lines to ground. The chokes in all current-carrying lines from the at least two inputs are formed by means of choke windings on a common core of a current-compensated choke.
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50.发明授权Distributed detection of leakage current and fault current, and detection of string faults 有权泄漏电流和故障电流的分布式检测，以及串故障检测公开(公告)号：US09594126B2
公开(公告)日：2017-03-14
申请号：US14607151
申请日：2015-01-28
发明人： Andreas Falk , Mario Willenberg
CPC分类号： G01R31/40 , G01R31/025 , H01L31/02021 , H02H3/337 , H02H7/122 , H02H7/20 , H02S50/00 , H02S50/10 , Y02E10/50
摘要： For monitoring an inverter that includes separate input-side connectors for multiple direct-current generators with regard to the occurrence of a critical fault current, differential currents in at last two pairs of input lines are measured separately in the inverter. The at last two pairs of input lines conduct the currents that are fed in at different input-side connectors, and all pairs of input lines in their entirety transmit all currents that are fed in at the connectors. The differential currents are compared with a limit value separately for each pair of input lines. A case of the limit value being exceeded is recognized as a fault. In addition, a sum of simultaneously occurring differential currents in all pairs of input lines is determined and the sum is compared with a further limit value, wherein a case of the further limit value being exceeded is also recognized as a fault.
摘要翻译： 为了监测一个逆变器，包括关于发生临界故障电流的多个直流发电机的单独的输入侧连接器，最后两对输入线路中的差分电流在逆变器中单独测量。 最后两对输入线传导在不同输入侧连接器馈送的电流，并且所有输入线对全部传输在连接器处馈送的所有电流。 差分电流与每对输入线分别与极限值进行比较。 超过极限值的情况被认定为故障。 此外，确定所有输入线对中同时出现的差分电流的总和，并将和与另外的限制值进行比较，其中超过另外的限制值的情况也被认为是故障。
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