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41. 发明申请

US20210104372A1 Three Phase Surge Protection Device 有权
公开(公告)号：US20210104372A1
公开(公告)日：2021-04-08
申请号：US16982121
申请日：2019-04-02
申请人： TDK Electronics AG
发明人： Hua Qiu , Xiaojia Tian , Zhouquan He , Wen Yang
IPC分类号： H01H85/02 , H01H85/00 , H01H85/12 , H01H85/30 , H01H85/36 , H02H3/22 , H02H3/02 , H02H3/04 , H02H3/05 , H01C7/12
摘要： A three phase surge protection device is disclosed. In an embodiment a device include a stack comprising a first varistor, a second varistor and a third varistor, wherein the varistors are electrically connected to form a circuit and a first thermal disconnect configured to interrupt the circuit when a temperature of the first thermal disconnect exceeds a predefined temperature.

42. 发明申请

US20210031047A1 THERAPY IN THE EVENT OF ELECTRODE FAILURE 有权
公开(公告)号：US20210031047A1
公开(公告)日：2021-02-04
申请号：US16944443
申请日：2020-07-31
申请人： BIOTRONIK SE & Co. KG
发明人： THOMAS DOERR , ANDREAS KUCHER
IPC分类号： A61N1/39 , H02H3/08 , H02H3/02 , A61N1/05
摘要： An implantable medical device for the defibrillation of a patient's heart includes an energy storage device for providing a voltage, and at least one electrode for generating an electrical current pulse by way of the voltage. The energy storage device includes at least two capacitors for providing the voltage. The medical device is configured to prompt a further electrical current pulse by way of a reduced voltage from a parallel connection of the at least two capacitors in the event of the short circuit. A method for controlling an implantable medical device is also provided.

43. 发明授权

US10840699B2 Fault current managing branch for surge-less current interruption in DC system 有权
公开(公告)号：US10840699B2
公开(公告)日：2020-11-17
申请号：US15751971
申请日：2016-08-11
申请人： EFACEC ENERGIA, MÁQUINAS E EQUIPAMENTOS ELÉCTRICOS, S.A.
发明人： Ataollah Mokhberdoran , Nuno Silva , António Carrapatoso , Adriano Da Silva Carvalho , Helder Leite
IPC分类号： H02H9/00 , H02H3/087 , H02H9/02 , H02H3/02 , H01H33/59
CPC分类号： H02H9/005 , H02H3/087 , H02H9/02 , H01H33/596 , H02H3/021
摘要： A circuit breaker and fault current managing branch thereof for power transmission using Direct Current (DC) applications. A surge suppressor having DC bus terminal, transmission line terminal, and common terminal. An auxiliary branch comprises a pre-chargeable capacitor. The capacitor is charged by the DC bus before the circuit breaker is closed for operation and the capacitor is connected to be discharged to the transmission line when the circuit breaker is opened in operation, for suppressing the surge voltage across the circuit breaker. The auxiliary branch may comprise a charge sub-branch comprising a first controlled semiconductor switch for closing the charge sub-branch and charging the capacitor by the DC bus before the circuit breaker is closed. The auxiliary branch may comprise a discharge sub-branch comprising a second controlled semiconductor switch for closing the discharge sub-branch and discharging the capacitor to the transmission line when the circuit breaker is opened in operation.

44. 发明授权

US10811864B2 DC circuit breaker with counter current generation 有权
公开(公告)号：US10811864B2
公开(公告)日：2020-10-20
申请号：US15546625
申请日：2016-01-28
申请人： General Electric Technology GmbH
发明人： Jean-Pierre Dupraz
IPC分类号： H02H1/04 , H02H3/087 , H01H9/54 , H02H3/02 , H01H33/59
摘要： A circuit-breaker device, comprising a main branch and an auxiliary branch electrically in parallel with the main branch, wherein the main branch comprises at least one mechanical switch-disconnector in series with a breaker cell constituted of at least one semiconductor switch, and a snubber circuit in parallel with the at least one breaker cell, the snubber circuit including an energy storage element, wherein the mechanical switch-disconnector is switchable to selectively allow current to flow in the main branch in a first mode of operation or commutate current from the main branch to the auxiliary branch in a second mode of operation, characterized in that the snubber circuit further comprises a bleeder resistor arranged to create a counter current in the main branch when current is commutated from the main branch to the auxiliary branch by discharging the energy storage element.

45. 发明授权

US10756571B2 System and method for stabilizing power system 有权
公开(公告)号：US10756571B2
公开(公告)日：2020-08-25
申请号：US16307395
申请日：2016-07-11
申请人： Hitachi, Ltd.
发明人： Tomomichi Ito , Akira Kikuchi , Masahiro Watanabe
IPC分类号： H02J13/00 , H02H1/00 , H02H7/20 , H02J3/38 , H02H3/02 , H02J3/24
摘要： Providing a power system and a method for stabilizing a system, in which the number of generators to be disconnected is reduced to narrow an area influenced by a grid fault in the case where the reliability of the state estimation calculation is judged to be high. The power system stabilizing method applied to a power system configured to include a plurality of feeders including circuit breakers, a plurality of nodes, a plurality of generators, and a plurality of loads, in which method: a protection relay detects a grid fault by using an output from a first sensor installed close to the circuit breaker, thereby opening-controlling the circuit breaker, and the circuit breaker is opening-controlled by a power system stabilization output; a state estimation value of a power system obtained by using the first sensor output and a state detection value, of the power system, containing information associated with measurement time measured in the power system are compared with each other to judge reliability of the state estimation value; the circuit breaker which is to be newly cut off from a viewpoint of power system stability after occurrence of a grid fault at a supposed grid fault point of the power system is stored, and the circuit breaker which is to be cut off every reliability judgment result of the state estimation value is stored; and at the time of occurrence of a grid fault of the power system, a turn-off command for the circuit breaker which is selected in response to the reliability judgment result of the state estimation value so as to be newly cut off is set as the power system stabilization output.

46. 发明授权

US10727665B2 Short-circuit protection apparatus and method 有权
公开(公告)号：US10727665B2
公开(公告)日：2020-07-28
申请号：US15997713
申请日：2018-06-05
申请人： AutoChips Inc.
发明人： Xianfeng Xiong , Zhenghua Song , Jiyong Lin
IPC分类号： H02H7/20 , H02H3/08 , H02H3/02 , H02H3/20 , H02H1/00
摘要： The present disclosure provides a short-circuit protection apparatus and method. The short-circuit protection apparatus includes a current detection circuit, a control circuit, and a voltage detection circuit. The current detection circuit detects an output current of an output circuit and outputs a current detection signal when the detected current is greater than a preset current. The control circuit receives the current detection signal and controls the output circuit to be turned off The voltage detection circuit detects an output voltage of the output circuit. When the output voltage is not in the preset voltage range, the output voltage is detected continuously When the output voltage is in the preset voltage range, the control circuit receives the voltage detection signal for controlling the output circuit.

47. 发明授权

US10707673B2 Protection circuit for oscilloscope measurement channel 有权
公开(公告)号：US10707673B2
公开(公告)日：2020-07-07
申请号：US15469039
申请日：2017-03-24
申请人： FORD GLOBAL TECHNOLOGIES, LLC
发明人： Chingchi Chen , Richard William Kautz , Krishna Prasad Bhat
IPC分类号： H02H3/20 , G01R1/36 , H01H3/02 , G01R13/02 , H02H3/02
摘要： A system includes a surge protection circuit electrically connected via a signal transmission line between a source and an oscilloscope, and including a diode configured to be reverse biased, responsive to a voltage of the source being less than a threshold, to decouple an impedance of the circuit from the transmission line and forward biased, responsive to the voltage being greater than the threshold, to couple the impedance to absorb excess energy of the voltage.

48. 发明授权

US10707029B2 Low-voltage circuit breaker device 有权
公开(公告)号：US10707029B2
公开(公告)日：2020-07-07
申请号：US16342547
申请日：2017-09-29
申请人： EATON INTELLIGENT POWER LIMITED
发明人： Kenan Askan
IPC分类号： H01H9/54 , H02H3/02 , H02H3/08 , H02H7/22 , H02H1/00
摘要： A low-voltage circuit breaker device includes: at least one outer conductor path from an outer conductor supply terminal of the low-voltage circuit breaker device to an outer conductor load terminal of the low-voltage circuit breaker device; a neutral conductor path from a neutral conductor terminal of the low-voltage circuit breaker device to a neutral conductor load terminal of the low-voltage circuit breaker device; a mechanical by-pass switch arranged in the outer conductor path; a semiconductor circuit arrangement of the low-voltage circuit breaker device connected in parallel to the bypass switch; an electronic control unit; and a current measurement arrangement arranged in the outer conductor path and connected to the electronic control unit. The electronic control unit actuates the mechanical by-pass switch and the first semiconductor circuit arrangement upon detection of a predefined overload current, namely a short-circuit current, by the current measurement arrangement.

49. 发明授权

US10700515B2 Power supply with surge voltage protection 有权
公开(公告)号：US10700515B2
公开(公告)日：2020-06-30
申请号：US14854802
申请日：2015-09-15
申请人： DET International Holding Limited
发明人： Christian Krumpholz
IPC分类号： H02H9/00 , H02H9/04 , H02H3/20 , H02H3/02
摘要： The invention relates to a surge protected power supply for feeding a device with electrical energy. The power supply includes a surge protection device SPD connected in series with a controllable switch where this series connection is connected between two current conductors of the power supply. The power supply further includes a device for determining a comparison voltage such that the comparison voltage is in some form indicative of a surge voltage present at the input of the power supply. This comparison voltage then is compared to a threshold. If the comparison voltage is higher than the threshold, the controllable switch is closed such that the SPD in series with the switch is effectively connected between the two current conductors to divert the surge current through the SPD. If the comparison voltage is lower than the threshold the switch remains open.

50. 发明授权

US10693293B2 Fault protection in converter-based DC distribution systems 有权
公开(公告)号：US10693293B2
公开(公告)日：2020-06-23
申请号：US15344013
申请日：2016-11-04
申请人： ABB Schweiz AG
发明人： Li Qi , Jiuping Pan , Yao Chen , Guoju Zhang
IPC分类号： H02J1/00 , H02H7/26 , H02M1/32 , H02H3/02 , H02H3/06 , H02H9/02 , H02M3/04 , H02M7/04
摘要： Methods and apparatus for protecting a direct-current (DC) electric power distribution system that includes one or more AC/DC converters and/or one more DC/DC converters, and one or more loads, connected by DC buses. An example method, which is carried out in response to the detection of a fault somewhere in the system, begins with limiting an output current of each of one or more of the converters so that each of the limited converters outputs a limited DC current at or about a corresponding predetermined current level. After the current limiting of the one or more converters has taken place, one or more protection devices in the system are activated, where the activating at least partly depends on the limited DC currents being at or about the predetermined fault current levels.

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