公开(公告)号：US20230396052A1

公开(公告)日：2023-12-07

申请号：US18034263

申请日：2021-11-01

Applicant: YAZAKI NORTH AMERICA, INC.

Inventor： Yuanyuan Wu ,  Kenneth Russel

IPC: H02H1/04 ,  H02H11/00

CPC classification number: H02H1/043 ,  H02H11/007 ,  H02H9/025

Abstract: An arc suppression pre-charge circuit includes a source for providing energy to a load and a main contactor selectively closed to provide energy from the source to the load, wherein the main contactor provides an alternate current path from the source to the load and bypasses a pre-charge branch of the circuit when the main contactor is closed. The pre-charge branch includes a voltage-controlled resistor and a control circuit configured to control a resistance of the voltage-controlled resistor.

公开(公告)号：US20170338642A1

公开(公告)日：2017-11-23

申请号：US15671164

申请日：2017-08-08

Applicant: ABB Schweiz AG

Inventor： Florian Zowislok ,  Dirk Lill

IPC: H02H3/10 ,  H02M3/335 ,  H02H1/04 ,  H02H3/087 ,  H02H9/00 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33546 ,  H02H1/043 ,  H02H3/087 ,  H02H3/105 ,  H02H9/002 ,  H02H9/008 ,  H02M1/08 ,  H02M2001/0009

Abstract: A method and a device for supplying energy to a low-voltage load using an electronic power supply device. The method involves: a) setting the power supply device to be able to provide an output current to the low-voltage load up to a specified peak current value upon demand; b) monitoring the output current (IL) provided to the low-voltage load by the electronic power supply device to detect an increase of IL over a threshold (IN) which is lower than the peak current value, c) if an increase of IL to an increased output current value higher than IN is detected, detecting the increased IL value and ascertaining an output current pulse duration (tPulse) based on the increased current value; d) providing IL at the level of the increased current value for the duration of the ascertained tPulse; and e) providing the IL at the level of IN after tPulse has expired.

公开(公告)号：US09755419B2

公开(公告)日：2017-09-05

申请号：US14213838

申请日：2014-03-14

Applicant: Innovolt, Inc.

Inventor： Vincent P. Luciani ,  Eugene Bright

IPC: H02H3/00 ,  H02H3/10 ,  H02H1/04

CPC classification number: H02H3/10 ,  H02H1/043

Abstract: Apparatus and methods for selective protection of an electrical load from disturbances on an input power line. A power protection circuit includes a selectively variable inrush current limiting circuit and a switch for disconnecting the input power line from the load. A control circuit determines that the electrical load is in a first operational state, such as a standby mode or normal operation, or a second operational state, such as full operation at rated current. The power protection circuit provides variable inrush current limiting to the electrical load in response to a first category of disturbances when the electrical load is in the first operational state. The power protection circuit inhibits disconnecting the electrical load in response to a second category of disturbances when the electrical load is in the second operational state. Species of selectively variable current limiting circuits are also described.

公开(公告)号：US20170149366A1

公开(公告)日：2017-05-25

申请号：US15421819

申请日：2017-02-01

Applicant: Eaton Corporation

Inventor： Irving Albert Gibbs ,  Thomas Arthur Farr

IPC: H02P13/12 ,  H02H7/04 ,  H02P1/16

CPC classification number: H02P13/12 ,  H02H1/043 ,  H02H7/04 ,  H02H9/002 ,  H02M1/36 ,  H02M1/40 ,  H02P1/16 ,  H02P27/06

Abstract: An apparatus includes a magnetizing circuit configured to be coupled to a transformer and to selectively provide a magnetizing current to the transformer and a control circuit configured to cause the magnetizing circuit to provide the magnetizing current following disconnection of the primary winding of the transformer from the power source. The magnetizing circuit may be configured to provide the magnetizing current from a first source following disconnection of the primary winding from a second source. The transformer may include a first transformer and the apparatus may further include a second, higher impedance transformer coupled between the second source and the first transformer. In further embodiments, the magnetizing circuit may include a solid-state converter.

公开(公告)号：US20170149233A1

公开(公告)日：2017-05-25

申请号：US14946033

申请日：2015-11-19

Applicant: Continental Automotive Systems, Inc.

Inventor： Justin M. Hanson

IPC: H02H3/08 ,  H03K19/0175

CPC classification number: H02H3/08 ,  H02H1/043 ,  H02H3/087 ,  H03K17/08 ,  H03K19/017509 ,  H03K2217/0063

Abstract: A high side output driver includes a controller capable of operating the high side output driver in a charging mode by outputting a pulse width modulated voltage signal. The on time of the pulse width modulated voltage signal is less than a minimum value of a blank time range of the high side output driver.

公开(公告)号：US09647657B1

公开(公告)日：2017-05-09

申请号：US14469270

申请日：2014-08-26

Applicant: GLF Integrated Power, Inc.

Inventor： Stephen W. Bryson ,  Ni Sun

IPC: H02H9/08 ,  H03K17/16 ,  H02J9/06 ,  H02J7/34 ,  H02H1/04

CPC classification number: H02J7/345 ,  H02H1/043 ,  H02H3/087 ,  H02H3/18 ,  H02H3/243 ,  H02H5/04 ,  H02J9/06 ,  H03K17/166 ,  Y10S323/908

Abstract: A fully integrated circuit configuration that can be used to control the power path of a pair of PMOS load switches is described. The circuit also integrates a programmable slew rate for the second PMOS load switch in order to control the power path from the input system voltage (battery or power supply) or from a backup source of power. The integrated circuit configuration also contains a charge pump circuit which can be used to charge the backup source of power to a voltage that is greater than the input voltage.

公开(公告)号：US09343895B2

公开(公告)日：2016-05-17

申请号：US13872554

申请日：2013-04-29

Applicant: ABB TECHNOLOGY LTD

Inventor： Niraj Suthar ,  Vishal H. Shah ,  Priyank Desai ,  Mohammed Y. Shafi

IPC: H02H3/00 ,  H02H3/16 ,  H02H1/04 ,  H02H1/06 ,  H02H3/10

CPC classification number: H02H3/16 ,  H02H1/043 ,  H02H1/063 ,  H02H3/105 ,  H02H3/165

Abstract: A protection feature is disclosed for a self powered protection relay having, for example, sensitive earth fault protection. Protection can be achieved in tandem with optimal power on trip time and with integrated logic for inrush discrimination. The self supplied protection relay can include a current processing module to measure and evaluate line current to generate a trip signal, and to suppress inrush current to block earth fault detection during an inrush condition and thereby increase sensitivity of fault detection.

Abstract translation: 对于具有例如敏感接地故障保护的自供电保护继电器公开了一种保护特征。 可以通过最佳跳闸时间功率和集成逻辑来实现浪涌保护。 自供电保护继电器可以包括用于测量和评估线电流以产生跳闸信号的当前处理模块，并且在浪涌状态期间抑制浪涌电流阻止接地故障检测，从而提高故障检测的灵敏度。

公开(公告)号：US20150092311A1

公开(公告)日：2015-04-02

申请号：US14042594

申请日：2013-09-30

Applicant: ABB Technology AG

Inventor： Zhenyuan Wang ,  Joseph A. Carr ,  Jing Xu ,  Juhua Liu

IPC: H02H1/04 ,  H02H3/247 ,  H02H3/24 ,  H02H3/08

CPC classification number: H02H1/043 ,  H02H3/08 ,  H02H3/087 ,  H02H3/24 ,  H02H3/247

Abstract: Methods, systems, and computer readable media for providing protection of DC building electrical systems are disclosed. According to one aspect, a system for over-current protection of direct current (DC) building electrical systems includes a DC bus for providing DC power to a building and multiple DC feeder conductors for providing DC power to multiple locations within the building. Each DC feeder conductor is connected to the DC bus via a DC protection module having a fuse, a normally closed switch connected in parallel with the fuse, and a circuit breaker connected in series with the fuse and switch, where the switch is controllable to be closed to protect the fuse against transient current conditions and controllable to be open after the transient current conditions have subsided to allow the fuse to operate normally.

Abstract translation: 公开了用于提供DC建筑物电气系统保护的方法，系统和计算机可读介质。 根据一个方面，用于直流（DC）建筑物电气系统的过电流保护的系统包括用于向建筑物提供直流电力的DC总线和用于向建筑物内的多个位置提供直流电力的多个DC馈线导体。 每个直流馈电导体通过直流保护模块连接到直流母线，该保护模块具有保险丝，与保险丝并联连接的常闭开关，以及与保险丝和开关串联连接的断路器，其中开关可控制为 关闭以保护熔断器免受瞬态电流条件的影响，并且在瞬态电流条件已经消退以后可控制为断开，以使熔断器正常工作。

公开(公告)号：US08884467B2

公开(公告)日：2014-11-11

申请号：US14077913

申请日：2013-11-12

Applicant: Bertil Lundqvist

Inventor： Bertil Lundqvist

IPC: H01H31/34

CPC classification number: H02H3/283 ,  H02H1/043 ,  H02H3/30 ,  H02H7/261

Abstract: A differential protection system including a plurality of inputs power cables for transfer of power from electric power generators, such as wind power generators, to an output cable. Each input and output power cable is provided with a respective circuit breaker. The protection system includes a plurality of protection equipment unit each being adapted to be arranged at a respective one of the input cables or at the output cable, each protection equipment unit including a measuring unit for measuring the current and voltage of the cable, and including a control unit being operatively connectable to the circuit breaker of the respective power cable for selectively tripping the circuit breaker when the protection system discovers a differential fault. The protection system includes a charging current compensator for compensating the differential protection for charging currents of the cables of the transfer system.

Abstract translation: 一种差动保护系统，包括用于将功率从诸如风力发电机的发电机传递到输出电缆的多个输入电力电缆。 每个输入和输出电力电缆都设有相应的断路器。 保护系统包括多个保护设备单元，每个保护设备单元适于布置在相应的一个输入电缆或输出电缆处，每个保护设备单元包括用于测量电缆的电流和电压的测量单元，并且包括 控制单元可操作地连接到相应电力电缆的断路器，用于当保护系统发现差分故障时选择性地跳闸断路器。 保护系统包括充电电流补偿器，用于补偿传送系统的电缆的充电电流的差动保护。

公开(公告)号：US08842403B2

公开(公告)日：2014-09-23

申请号：US13058731

申请日：2009-06-05

Applicant: Alwin Hummel ,  Harald Schweigert

Inventor： Alwin Hummel ,  Harald Schweigert

IPC: H02H3/08 ,  H02H9/02 ,  H02H3/00

CPC classification number: H02H3/08 ,  H02H1/043 ,  H02H3/006

Abstract: An electrical system having at least one load that is protected by a protective device, where a tripping parameter, i.e., a tripping current of the protective device can be set. A control unit is provided to which a measured current value of the current consumed by the at least one load is supplied, where the control unit generates a limit value, which is provided to the protective device for setting a tripping parameter as a function of the characteristic curve of the measured current value. The control unit thus permits ongoing adjustment of the tripping parameters, i.e., the release current, according to the actual operating conditions.

Abstract translation: 一种电气系统，其具有由保护装置保护的至少一个负载，其中可以设置跳闸参数，即保护装置的跳闸电流。 提供控制单元，在该控制单元上提供由至少一个负载消耗的电流的测量电流值，其中控制单元产生限制值，其被提供给保护装置，用于设置跳闸参数作为 测量电流值的特性曲线。 因此，控制单元允许根据实际操作条件不断调整跳闸参数，即释放电流。