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61. 发明授权

US11037749B2 Selective coordination of solid-state circuit breakers and mechanical circuit breakers in electrical distribution systems 有权
公开(公告)号：US11037749B2
公开(公告)日：2021-06-15
申请号：US16382590
申请日：2019-04-12
申请人： Atom Power, Inc.
发明人： Denis Kouroussis , Ryan Kennedy
IPC分类号： H01H71/10 , H02H3/16 , H01H71/12
摘要： In an electrical distribution system including a solid-state circuit breaker (SSCB) and one or more downstream mechanical circuit breakers (CBs), a solid-state switching device in the SSCB is repeatedly switched ON and OFF during a short circuit event, to reduce a root-mean-square (RMS) value of the short circuit current. The resulting pulsed short circuit current is regulated in a hysteresis control loop, to limit the RMS to a value low enough to prevent the SSCB from tripping prematurely but high enough to allow one of the downstream mechanical CBs to trip and isolate the short circuit. Pulsing is allowed to continue for a maximum short circuit pulsing time. Only if none of the downstream mechanical CBs is able to trip to isolate the short circuit within the maximum short circuit pulsing time is the SSCB allowed to trip.

62. 发明授权

US11018494B2 Electronic protection device 有权
公开(公告)号：US11018494B2
公开(公告)日：2021-05-25
申请号：US15945345
申请日：2018-04-04
申请人： ABB Schweiz AG
发明人： Agostino Butti , Antonio Currá , Vittorio Cozzi
IPC分类号： H02H3/28 , H02H1/00 , H02H3/08 , H02H3/16 , H02H3/10 , H02H3/20 , H03K21/08 , G01R31/12
摘要： An electronic protection device for a LV electric line including one or more conductors, comprising: one or more pairs of electric contacts adapted to be electrically connected with corresponding conductors of the electric line, the electric contacts being operatively coupleable or decoupleable from one another; and a control unit adapted to control the operation of the electronic protection device; wherein the control unit includes an electronic arrangement to detect and determine arc fault conditions in the electric line.

63. 发明授权

US11016135B2 Systems and methods for ground fault detection in power systems using communication network 有权
公开(公告)号：US11016135B2
公开(公告)日：2021-05-25
申请号：US16202571
申请日：2018-11-28
申请人： Cummins Power Generation IP, Inc.
发明人： Shubhranshu Verma , Julie M. Delago
IPC分类号： G01R31/08 , H02H1/00 , H02H3/16
摘要： Systems, methods, storage media, and computing platforms for determining a fault in a power system, executing on a controller are disclosed. Exemplary implementations may: receive a first value of current flow from a first current sensor installed on a first bus of the power system; receive a second value of current flow from a second current sensor installed on a second bus of the power system; determine a first direction of power flow in the first current sensor using the first value of current flow; determine a second direction of power flow in the second current sensor using the second value of current flow; and determine a power fault is located on one of the first bus of the power system or the second bus of the power system based on the first direction of power flow and the second direction of power flow.

64. 发明授权

US10998755B2 Transformerless DC to AC converter using selectively series-connected capacitors and PWM 有权
公开(公告)号：US10998755B2
公开(公告)日：2021-05-04
申请号：US17017849
申请日：2020-09-11
申请人： Koolbridge Solar, Inc.
发明人： Paul Wilkinson Dent
IPC分类号： H02M7/537 , H02J7/35 , H02J3/00 , H02J7/00 , H02J9/06 , H02M1/32 , H02M1/36 , H02M7/5387 , H02J3/38 , H02H3/16
摘要： A DC to AC converter is configured to convert DC power from a floating DC power source to AC power having a desired voltage and waveform. A plurality of capacitors is charged to discrete voltages from the DC power. A switching network selectively connects the capacitors in series to an AC output node. For selected capacitors, either the associated voltage or the inverse of the associated voltage is summed together (non-selected capacitors contribute zero volts to the sum). The sum voltage is output to the AC output node at two values, and the voltage is jittered between these two values at a high frequency in order to approximate intermediate values. The two values jittered between, and the values and timing of the intermediate values, are controlled to construct a desired waveform, such as an approximation to a sine wave.

65. 发明申请

US20210119434A1 ELECTRICAL WIRING DEVICE 有权
公开(公告)号：US20210119434A1
公开(公告)日：2021-04-22
申请号：US17135298
申请日：2020-12-28
申请人： Hubbell Incorporated
发明人： Zhouxiang He
IPC分类号： H02H3/16 , H01H83/04
摘要： A circuit interrupting device includes an input conductor for electrically connecting to an external power supply, a load conductor for electrically connecting to a downstream load, a face conductor for electrically connecting to an external load, and a brush conductor in electrical communication with the input conductor and movable between a closed position and an open position. The brush conductor includes a second portion offset from a first portion such that a first terminal and a second terminal are positioned on separate planes. When the brush conductor is in the closed position, the first terminal contacts the load terminal and the second terminal contacts the face terminal to provide electrical communication between the input conductor, the load conductor, and the face conductor. When the brush conductor is in the open position, the first terminal is spaced apart from the load terminal and the second terminal is spaced apart from the face terminal.

66. 发明授权

US10983154B2 Load state detection circuit and method 有权
公开(公告)号：US10983154B2
公开(公告)日：2021-04-20
申请号：US16519127
申请日：2019-07-23
申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
发明人： Yuqun Zeng , Kai Wu , Jirong Huo , Le Chu , Yanhui Fu , Qiandeng Li
IPC分类号： G01R31/00 , H02H1/00 , H02H3/16
摘要： Disclosed are a load state detection circuit and method. A microcontroller is connected to a switch unit which is connected between a detecting power supply and a load to be tested. A voltage sampling point is formed at either terminal of the load to be tested, and the voltage sampling circuit is connected between the voltage sampling point and the microcontroller. The voltage sampling circuit is configured to sample a voltage at the voltage sampling point. The microcontroller is configured to connect the load to be tested and the detecting power supply by controlling the switch unit, and determine whether a fault exists in the load to be tested according to a received voltage at the voltage sampling point sampled by the voltage sampling circuit, before connecting the load to be tested with the drive power supply.

67. 发明授权

US10958063B2 Ground fault modules and related circuit interrupters and methods 有权
公开(公告)号：US10958063B2
公开(公告)日：2021-03-23
申请号：US15883676
申请日：2018-01-30
申请人： Eaton Intelligent Power Limited
发明人： Sandy Omar Jimenez , James Gerard Maloney , Rajesh Kumar Reddy Appal
IPC分类号： H02H3/00 , H02H3/16 , H05K5/02 , H05K7/02 , H05K1/16 , H05K13/00 , H01R13/62 , H02H3/33 , H01H71/00 , H02H1/00
摘要： Plug-on ground fault modules are configured with a housing and at least one ground fault terminal. The at least one ground fault terminal can be a rigid or semi-rigid member that is configured to slidably engage a circuit breaker terminal. The modules also include aground fault circuit coupled to the ground fault terminal and at least one printed circuit board in the housing with components of the ground fault circuit including at least one solenoid assembly coupled thereto with a respective magnetized or magnetic plunger member residing on or adjacent thereto, and at least one current transformer. The modules also include at least one collar assembly residing in the housing spaced apart from the solenoid assembly and plunger member that is arranged to be able to engage a lever in the circuit interrupter to delatch the circuit interrupter.

68. 发明授权

US10934133B2 Elevator safety arrangement having earth fault detection 有权
公开(公告)号：US10934133B2
公开(公告)日：2021-03-02
申请号：US15804583
申请日：2017-11-06
申请人： KONE Corporation
发明人： Ari Kattainen , Juha-Matti Aitamurto , Lauri Stolt
IPC分类号： B66B5/02 , G01R31/52 , B66B3/00 , H02H3/16 , H02H7/12 , H02P27/06
摘要： A safety arrangement of an elevator and a method for monitoring electrical safety in an elevator system is disclosed. The safety arrangement of an elevator includes a motor drive of the elevator, which motor drive includes a main circuit, an accessible conducting part, which is earthed, an insulator, which is adapted to electrically insulate the aforementioned conducting part from the aforementioned main circuit and also a monitoring circuit, which is configured to determine an earth fault of the aforementioned main circuit occurring via the aforementioned conducting part. The monitoring circuit is configured to form a signal indicating the danger of electric shock in the motor drive of the elevator, if the aforementioned earth fault is diagnosed.

69. 发明申请

US20210028616A1 LEAKAGE PROTECTION CIRCUIT, LEAKAGE PROTECTION METHOD AND LOAD DRIVING CIRCUIT 有权
公开(公告)号：US20210028616A1
公开(公告)日：2021-01-28
申请号：US16920860
申请日：2020-07-06
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Longqi Wang , Jianxin Wang
IPC分类号： H02H3/16 , H02H1/00 , G01R31/52
摘要： A leakage protection circuit can include: a pull-down current generation circuit coupled between output terminals of a rectifier circuit; and a control circuit configured to control the pull-down current generation circuit to generate a pull-down current during a predetermined time interval, and to determine whether leakage occurs in accordance with a voltage detection signal that is representative of an output voltage of the rectifier circuit. In one embodiment,

70. 发明授权

US10879688B2 Electrical wiring device 有权
公开(公告)号：US10879688B2
公开(公告)日：2020-12-29
申请号：US16133557
申请日：2018-09-17
申请人： Hubbell Incorporated
发明人： Zhouxiang He
IPC分类号： H02H3/00 , H02H3/16 , H01H83/04 , H01H71/04
CPC分类号： H02H3/162 , H01H83/04 , H01H2071/044 , H01H2083/045
摘要： A circuit interrupting device includes an input conductor for electrically connecting to an external power supply, a load conductor for electrically connecting to a downstream load, a face conductor for electrically connecting to an external load, and a brush conductor in electrical communication with the input conductor and movable between a closed position and an open position. The brush conductor includes a second portion offset from a first portion such that a first terminal and a second terminal are positioned on separate planes. When the brush conductor is in the closed position, the first terminal contacts the load terminal and the second terminal contacts the face terminal to provide electrical communication between the input conductor, the load conductor, and the face conductor. When the brush conductor is in the open position, the first terminal is spaced apart from the load terminal and the second terminal is spaced apart from the face terminal.

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