公开(公告)号：US20240348041A1

公开(公告)日：2024-10-17

申请号：US18292660

申请日：2021-08-02

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Antonino VESPOLI ,  Daniel ZUCCHETTO ,  Chahrazed BOUHINI

IPC: H02H3/46 ,  H02H1/00 ,  H02H3/38

CPC classification number: H02H3/46 ,  H02H1/0092 ,  H02H3/38

Abstract: A circuit breaker for controlling a power supply to electrical appliances connected to a power line. The circuit breaker comprises: a signal acquisition module configured to acquire an electrical power signal indicative of the power supply; a circuit breaker mechanism configured to selectively interrupt the power supply to the one or more electrical appliances based on the electrical power signal; an event detection module configured to detect an event associated with operation of one or more of the electrical appliances based on electro-magnetic interference (EMI) generated by the event; and a feedback module configured to control one or more feedback actions in dependence on the detected event. The event detection module is configured to: identify one or more EMI features in the electrical power signal; compare the one or more identified EMI features to an event database comprising event records, and detect the event based on the comparison.

公开(公告)号：US20240170948A1

公开(公告)日：2024-05-23

申请号：US18519720

申请日：2023-11-27

Applicant: Hubbell Incorporated

Inventor： Roy Itzler ,  Nicole Gay

IPC: H02H3/38

CPC classification number: H02H3/38 ,  H02H3/325

Abstract: A temporary power delivery system includes a power source, a booth stringer, and a portable GFCI device. The GFCI device is receives current from the power source by a first terminal and delivers current to the booth stringer by a second terminal. An electronic processor of the GFCI device compares a combined magnitude of current flowing through first and second phase conductors of the GFCI device to a magnitude of current flowing through a neutral conductor of the GFCI. The electronic processor also compares a first voltage between the first phase conductor and neutral conductor to a second voltage between the second phase conductor and neutral conductor. A circuit breaker of the GFCI device is opened if a difference between the combined magnitude of phase conductor current and neutral conductor current exceeds a first threshold or a difference between the first voltage and second voltage exceeds a second threshold.

公开(公告)号：US11843239B2

公开(公告)日：2023-12-12

申请号：US17503507

申请日：2021-10-18

Applicant: Yokogawa Electric Corporation

Inventor： Fumihiro Yoshida

IPC: H02H9/00 ,  H02H3/38 ,  H02H1/00 ,  H02H7/20

CPC classification number: H02H3/38 ,  H02H1/0061 ,  H02H7/20

Abstract: A field device includes: a current controller configured to operate with a first power supply voltage and output a control signal for controlling a current to be output to a transmission line; a current output unit configured to operate with a second power supply voltage different from the first power supply voltage, the current output unit being capable of outputting a current of a magnitude corresponding to the control signal output from the current controller to the transmission line; and an abnormality notification unit configured to output, to the current output unit, a first signal for causing the current output unit to output a burnout current indicating that an abnormality has occurred in a case in which an abnormality occurs in the first power supply voltage.

公开(公告)号：US11811217B2

公开(公告)日：2023-11-07

申请号：US17584102

申请日：2022-01-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Dong Chen ,  Lei Shi ,  Jun Wang

IPC: H02M1/32 ,  H02H7/122 ,  H02J3/00 ,  H02H3/38 ,  H02M7/487

CPC classification number: H02H7/122 ,  H02H3/38 ,  H02J3/001 ,  H02M1/32 ,  H02J2300/24 ,  H02M7/487

Abstract: A photovoltaic power generation system includes a capacitor bridge arm, an inverter bridge arm, and the fault protection apparatus. The capacitor bridge arm includes a positive electrode output port, a negative electrode output port, and a reference output port The inverter bridge arm includes a positive electrode input port, a negative electrode input port, and a reference input port. The positive electrode input port is connected to the positive electrode output port. The negative electrode input port is connected to the negative electrode output port. The reference input port is connected to the reference output port by using the fault protection apparatus. The fault protection apparatus is turned off based on a magnitude value or a variation of a voltage, or a magnitude value or a variation of a current between the reference input port and the positive electrode input port or the negative electrode input port.

公开(公告)号：US10020153B2

公开(公告)日：2018-07-10

申请号：US14483714

申请日：2014-09-11

Applicant: SCHNEIDER ELECTRIC INDUSTRIES SAS

Inventor： Francois Vincent ,  Simon Tian

IPC: G08B21/00 ,  H01H71/12 ,  H01H71/04 ,  H01H71/46 ,  H02H3/38 ,  H02H3/08 ,  H02H3/10 ,  H02H3/24 ,  H02H5/04

CPC classification number: H01H71/125 ,  H01H71/04 ,  H01H71/462 ,  H01H2071/042 ,  H01H2071/048 ,  H02H3/08 ,  H02H3/10 ,  H02H3/24 ,  H02H3/38 ,  H02H5/041

Abstract: In this method, the voltage outage load-side is an opening of the circuit breaker, and the circuit breaker is able to interrupt the flow of electric current in an electric connection including an electric conductor. The auxiliary unit comprises a current sensor for measuring the intensity of the current flowing in the electric conductor and a first detection means for detecting the voltage outage load-side from the circuit breaker. The method comprises the following steps: measuring the intensity of the current flowing in the electric conductor, detecting the voltage outage load-side from the electric circuit breaker, determining a cause of the detected voltage outage load-side from the circuit breaker, said cause being selected from the group consisting in: an electric overload, a short-circuit and a voltage drop.

公开(公告)号：US09948089B2

公开(公告)日：2018-04-17

申请号：US14911349

申请日：2014-04-11

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Katsuhiko Horinouchi ,  Motohiro Sato

IPC: H02H3/033 ,  H02H3/38 ,  H01H9/54 ,  H03K17/567 ,  H01H33/59 ,  H03K17/0812

CPC classification number: H02H3/38 ,  H01H9/54 ,  H01H9/547 ,  H01H33/596 ,  H01H2009/544 ,  H02H3/087 ,  H03K17/08128 ,  H03K17/567

Abstract: In a DC circuit breaker device, first and second semiconductor switches are connected in series on a main circuit line such that current-carrying directions of the switches are opposite to each other. A first diode is connected in anti-parallel with the first semiconductor switch, and a second diode is connected in anti-parallel with the second semiconductor switch. First and second mechanical circuit breakers are connected in series with each other and in parallel with the whole of the first and semiconductor switches. First and second backward current generation circuits are connected in series with each other and in parallel with the whole of the first and second mechanical circuit breakers. An injection switch is connected between a node between the first and second mechanical circuit breakers and a node between the first and second backward current generation circuits.

公开(公告)号：US09728954B2

公开(公告)日：2017-08-08

申请号：US15038153

申请日：2013-11-21

Applicant: Mitsubishi Electric Corporation

Inventor： Takafumi Ishikawa

IPC: H02H7/20 ,  H02H3/08 ,  H02H3/20 ,  B25J19/06 ,  H02J1/00 ,  H02H3/38

CPC classification number: H02H7/20 ,  B25J19/06 ,  H02H3/08 ,  H02H3/20 ,  H02H3/38 ,  H02J1/00

Abstract: A first current cut-off unit that cuts off a current input from a power-supply-voltage input terminal connected to an AC power source when a current value of the current exceeds a preset threshold, and a second current cut-off unit that cuts off a current output from the first current cut-off unit when a voltage value of a voltage applied from the power-supply-voltage input terminal exceeds a preset threshold are configured. A current cut-off element provided on a current path from the power-supply-voltage input terminal toward a DC output terminal, and a resistor that draws a current having passed through the current cut-off element toward a ground are provided as the first current cut-off unit.

公开(公告)号：US09722414B2

公开(公告)日：2017-08-01

申请号：US14303807

申请日：2014-06-13

Applicant: LENOVO ENTERPRISE SOLUTIONS (SINGAPORE) PTE LTD.

Inventor： Wei Tien Chen ,  George Cheng ,  Yulianti Darmanto ,  Peter C Y Huang ,  JunHom Lin ,  W J Tseng

IPC: H02H3/10 ,  H02H3/38 ,  H02H3/087 ,  G06F1/28

CPC classification number: H02H3/38 ,  G06F1/28 ,  H02H3/087 ,  H02H3/10

Abstract: A method includes supplying power from a power supply to a first electrical circuit breaker. The method includes detecting whether at least one of a current and a voltage of the power has exceeded an operating threshold for the first electrical circuit. The method includes, in response to detecting that at least one of the current and the voltage of the power has exceeded the operating threshold for the first electrical circuit, shutting off the power supply and the first electrical circuit breaker. The method includes in response to detecting that at least one of the current and the voltage of the power has not exceeded the operating threshold for the first electrical circuit, supplying the power from the power supply to the second electrical circuit breaker that is electrically coupled to the second electrical circuit.

公开(公告)号：US09502884B2

公开(公告)日：2016-11-22

申请号：US14461347

申请日：2014-08-15

Applicant: University Of South Carolina

Inventor： Ugo Ghisla ,  Roger Dougal ,  Igor Kondratiev

IPC: H02H9/08 ,  H02H3/38 ,  H02H3/20 ,  H02M3/158 ,  H02H9/02 ,  H02M1/32 ,  H02H7/12

CPC classification number: H02H3/38 ,  H02H3/20 ,  H02H7/1213 ,  H02H9/02 ,  H02H9/025 ,  H02M1/32 ,  H02M3/1582

Abstract: Methods and systems for protecting DC circuits are provided. In an aspect, a method for controlling at least one protection circuit is disclosed. The method can monitor one or more parameters of the at least one protection circuit. One or more control signals can be selectively provided to a plurality of switches in the at least one protection circuit based on one or more parameters of the at least one protection circuit, in order to implement the appropriate protective topology based on one or more parameters of the at least one protection circuit. The method can be used to control a plurality of switches in the protection circuit and protect the DC circuit against short circuit, instabilities, and bus outages, and the like.

Abstract translation: 提供了保护直流电路的方法和系统。 一方面，公开了一种用于控制至少一个保护电路的方法。 该方法可以监视至少一个保护电路的一个或多个参数。 可以基于至少一个保护电路的一个或多个参数，选择性地将一个或多个控制信号提供给所述至少一个保护电路中的多个开关，以便基于一个或多个参数来实现适当的保护拓扑 所述至少一个保护电路。 该方法可用于控制保护电路中的多个开关，并且保护DC电路免受短路，不稳定性和总线中断等的影响。

公开(公告)号：US20160329700A1

公开(公告)日：2016-11-10

申请号：US15213223

申请日：2016-07-18

Applicant: San Diego Gas & Electric Company

Inventor： William O'Brien ,  Eric A. Udren

IPC: H02H7/26

CPC classification number: H02H7/263 ,  H02H3/02 ,  H02H3/04 ,  H02H3/26 ,  H02H3/265 ,  H02H3/32 ,  H02H3/325 ,  H02H3/353 ,  H02H3/38 ,  H02H3/422 ,  H02H3/44 ,  H02H3/46 ,  H02H3/48 ,  H02H7/261 ,  H02H7/28 ,  Y02E60/728 ,  Y04S10/265 ,  Y10T307/826 ,  Y10T307/858 ,  Y10T307/865

Abstract: Methods and systems for detecting a falling power line in a power transmission or distribution system are described. Electrical measurements at various points in the power distribution system are used to detect changes in a power line indicating that the conductor has broken or become disconnected. Upon detection, control mechanisms are used to deenergize the conductor while the conductor is falling and/or before it contacts the ground.

Abstract translation: 描述用于检测输电或配电系统中的下降电力线路的方法和系统。 电力分配系统中的各个点的电气测量用于检测电力线路中的变化，指示导体断开或断开。 检测时，控制机构用于在导体下降和/或接触导体之前对导体断电。