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公开(公告)号：US12108507B2
公开(公告)日：2024-10-01
申请号：US17633049
申请日：2020-08-06
申请人： Hubbell Incorporated
发明人： Adam J. Clark , Perry Romano
摘要： An inrush current protection circuit for a solid state lighting fixture is provided. The inrush current protection circuit includes one or more current limiting devices and one or more switching devices coupled in parallel with the one or more current limiting devices. The one or more switching devices are configured in a first state when the solid state lighting fixture draws an inrush current from a power source. The inrush current is provided to the one or more current limiting devices when the one or more switching devices are in the first state. The one or more switching devices are configured in a second state when the solid state lighting fixture draws a steady-state current from the power source. The steady-state current bypasses the one or more current limiting devices when the one or more switching devices are in the second state.
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2.发明公开公开(公告)号：US20230411954A1
公开(公告)日：2023-12-21
申请号：US18337569
申请日：2023-06-20
IPC分类号： H02H9/00
CPC分类号： H02H9/001 , H01H2083/201
摘要： Modular circuit protection devices and configurable panelboard systems include arc-free operation, thermal management features providing safe operation in hazardous environments at lower cost and without requiring conventional explosion-proof enclosures and without entailing series connected separately provided packages such as circuit breaker devices and starter motor contactors and controls.
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公开(公告)号：US20230378748A1
公开(公告)日：2023-11-23
申请号：US18246296
申请日：2021-07-30
发明人： Huijie YOU , Yan LI
摘要： The present disclosure discloses a soft-start protection circuit, comprising: a protection chip, a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor. In the soft-start protection circuit of the present disclosure, the voltage of a voltage input end and the control end voltage of the first switch tube may be monitored; therefore, when there is a change in the two voltages, correct turn-on and turn-off actions may be performed in the soft-start protection circuit, increasing the accuracy of protection and at the same time reducing the turn-on speed of switch tubes to a certain extent, thus effectively reducing the impact of an impulse current on components and systems. Correspondingly, the present disclosure further discloses a circuit protection integrated chip.
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公开(公告)号：US20230341452A1
公开(公告)日：2023-10-26
申请号：US18342334
申请日：2023-06-27
发明人： Eddie Wilkie , Geraldo Nojima
CPC分类号： G01R31/086 , H02M5/45 , H02H9/001 , H02H9/08
摘要： An apparatus includes a mechanical switch and a solid-state switch, such as a diamond switch or antiparallel-connected thyristor pair, coupled in series between an AC source and the load, such as a substation input transformer. The control circuit may be configured to connect the AC power source to the load by closing the mechanical switch and turning on the solid-state switch thereafter. The control circuit may be configured to interrupt a connection of the AC source to the load by turning off the solid-state switch and closing the mechanical switch thereafter. Operations of the switches may be coordinated with a fuse coupled in series with the solid-state switch to address different types of fault conditions.
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公开(公告)号：US20190207385A1
公开(公告)日：2019-07-04
申请号：US16293169
申请日：2019-03-05
发明人： Zhiji Deng
IPC分类号： H02H9/04 , H03K17/0812 , H02H3/20 , H02H9/00
CPC分类号： H02H9/04 , H02H3/202 , H02H9/001 , H03K17/0812 , H03K2217/0045
摘要： An overvoltage protection apparatus and method. The overvoltage protection apparatus includes: a determining unit, having an input end connected to an input end of the apparatus and an output end connected to an input end of a soft-start unit, and configured to determine whether an input voltage at the input end of the apparatus exceeds a preset protection voltage; and the soft-start unit, having an input end connected to the input end of the apparatus and an output end connected to an output end of the apparatus, where if the determining unit determines that the input voltage does not exceed the preset protection voltage and remains stable in a preset delay time, the soft-start unit delivers the input voltage to the output end of the apparatus; and otherwise, the soft-start unit does not deliver a voltage signal to the output end of the apparatus.
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公开(公告)号：US20190013663A1
公开(公告)日：2019-01-10
申请号：US16132067
申请日：2018-09-14
摘要： A method for improving safety of voltage regulator is disclosed. In order to improve safety of a voltage regulator, a MOS-FET is disposed on a source power lane that receives power supplied from a DC power supply. A set of voltage regulators is connected to a set of fork power lanes, correspondingly, branching off from the source power lane. PTC thermistors are disposed on a surface or in the vicinity of semiconductor chips of the voltage regulators. When temperature at any one of the PTC thermistors increases, a protection controller turns off the MOS-FET. When temperature detected by a temperature sensor incorporated within the semiconductor chip has increased, each of the voltage regulators turns off the MOS-FET via a base management controller.
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公开(公告)号：US20180270985A1
公开(公告)日：2018-09-20
申请号：US15987350
申请日：2018-05-23
发明人： Yuushi SHIRAGA
CPC分类号： H05K7/1492 , G06F1/20 , G06F1/26 , H02H1/0007 , H02H3/08 , H02H3/24 , H02H7/20 , H02H9/001 , H02H9/02 , H05K7/1489 , H05K7/20563 , H05K7/20727 , H05K7/20909
摘要： This power supply relay unit includes a power supply relay unit main body including a first switch and a resistor, and the power supply relay unit main body is disposed inside a load through which cooling air generated by a cooling fan flows.
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公开(公告)号：US20180248378A1
公开(公告)日：2018-08-30
申请号：US15442793
申请日：2017-02-27
发明人： Wei REN
CPC分类号： H02J3/381 , H02H9/001 , H02J3/32 , H02J3/40 , H02J7/0063 , H02J9/062 , H02J11/00 , H02J2003/388 , H02J2007/0067 , H02M7/537 , Y02E40/10
摘要： Systems and methods for black-starting a power system using a battery energy storage system can be provided. In one example implementation, a method includes obtaining, by the one or more controllers, a signal requesting a black-start of the power system using the battery energy storage system. The method further includes increasing, by one or more controllers, a system bus voltage to a nominal voltage level using the battery energy storage system for a start period according to a start ramp. The method further includes maintaining, by one or more controllers, the system bus voltage at about the nominal voltage level using the battery energy storage system during a normal period following the start period.
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公开(公告)号：US20180241201A1
公开(公告)日：2018-08-23
申请号：US15892716
申请日：2018-02-09
发明人： Di ZHANG
CPC分类号： H02H9/001 , H01H9/548 , H01H47/002 , H02J7/0026 , H03K17/56 , H04L12/28
摘要： The present disclosure provides a protective device related to the field of battery technology. The protective device includes an electronic switch, a mechanical switch and a time logic circuit. A first output terminal of the time logic circuit is connected to the electronic switch; a second output terminal of the time logic circuit is connected to the mechanical switch; an input terminal of the time logic circuit is connected to an output terminal of a power supply; and the electronic switch is connected in series with the mechanical switch into a circuit under control. The protective device provided in the present disclosure can effectively reduce the damage of the mechanical switch and extend the service life of the mechanical switch.
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10.发明申请公开(公告)号：US20180175611A1
公开(公告)日：2018-06-21
申请号：US15835555
申请日：2017-12-08
申请人： FANUC CORPORATION
发明人： Jun OKAMOTO
摘要： An inrush current prevention circuit includes: a voltage detection unit configured to detect a value of an input voltage applied by a power supply; a current detection unit configured to detect a value of an input current input from the power supply; a current limiting element configured to limit the input current; a voltage drop detection unit configured to detect a voltage drop in the power supply resulting from inrush currents using a detection voltage value detected by the voltage detection unit and a detection current value detected by the current detection unit; and a control unit configured to decrease a current limiting level of the current limiting element when the voltage drop detection unit detects the voltage drop.
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