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公开(公告)号：US11831149B2
公开(公告)日：2023-11-28
申请号：US17280250
申请日：2019-09-26
CPC分类号： H02H3/33 , G01R31/52 , H02H1/0015
摘要： To recognize a fault in an arrangement including a transformer having a primary winding connected in series with a DC voltage line and a secondary winding coupled magnetically to the primary winding, and including an evaluation unit that processes a secondary signal on the secondary winding, a signal component at at least one frequency is determined from the secondary signal and a signal level of the signal component is compared with a signal threshold. The fault is detected when the signal level falls below the signal threshold.
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公开(公告)号：US11056876B2
公开(公告)日：2021-07-06
申请号：US16650178
申请日：2018-09-28
摘要： Circuit arrangement 1 for securely switching inverter devices 2 of a system by a common emergency switch 3 which is connected to a switching signal input 4 of one of the inverter devices 2 which is configured as a master of the system and comprises a switching signal output 5, other inverter devices 2 of the system configured as a slave being connected to the one inverter device via switching signal lines 6, wherein the inverter devices 2 configured as a slave together with the inverter device 2 configured as a master form a switching chain which is automatically switched upon actuation of the emergency switch 3.
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公开(公告)号：US11804710B2
公开(公告)日：2023-10-31
申请号：US17263396
申请日：2019-07-26
发明人： Bernd Hofer , Christian Fasthuber , Franz Fischereder , Stefan Breuer , Walter Spitzer , Mario Bairhuber , Reimar Pfeil
CPC分类号： H02J1/06 , H02H1/0015 , H02H1/0076 , H02J3/381 , H02J13/00002 , H02J2300/24
摘要： The aim of the invention is to detect an arc in an assembly for transmitting a direct voltage. This aim is achieved by a communication transformer having a primary winding and a secondary winding, the secondary winding being connected to a transmitting device, which is designed to impress a communication signal onto the secondary winding of the communication transformer, and the primary winding being connected to one of the direct voltage lines in order to feed a communication signal transformed by the communication transformer to one of the direct voltage lines. In order to detect, in the assembly, the arc signal caused by an arc, the secondary winding is connected to an arc detection unit, which is designed to detect an arc signal transformed by the communication transformer.
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公开(公告)号：US20200227909A1
公开(公告)日：2020-07-16
申请号：US16650178
申请日：2018-09-28
摘要： Circuit arrangement 1 for securely switching inverter devices 2 of a system by a common emergency switch 3 which is connected to a switching signal input 4 of one of the inverter devices 2 which is configured as a master of the system and comprises a switching signal output 5, other inverter devices 2 of the system configured as a slave being connected to the one inverter device via switching signal lines 6, wherein the inverter devices 2 configured as a slave together with the inverter device 2 configured as a master form a switching chain which is automatically switched upon actuation of the emergency switch 3.
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