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公开(公告)号：US12235320B2
公开(公告)日：2025-02-25
申请号：US18142439
申请日：2023-05-02
Applicant: Phoenix Contact GmbH & Co. KG
Inventor： Henry Peter , Felix Franke
IPC: G01R31/327 , G01R15/22 , G01R19/00 , H02H3/02
Abstract: A safety switching apparatus for safely switching on an electrical load includes for this purpose, the functionality of two non-forcibly guided changeover switches and, in particular, their normally closed contacts, which can be monitored during a starting process without using a microcontroller. The normally closed contacts are each arranged in a separate diagnostic circuit, which are connected in parallel with respect to a test voltage. The diagnostic circuits are each monitored by a diagnostic current detection device. The excitation coils of the changeover switches can each be short-circuited via a short-circuit device if a diagnostic current continues to flow in the respective diagnostic circuit for a predetermined time period after an activated starting process.
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公开(公告)号：US12199412B2
公开(公告)日：2025-01-14
申请号：US17830644
申请日：2022-06-02
Applicant: RIPD IP DEVELOPMENT LTD.
Inventor： Thomas Tsovilis , Robert Rozman , Ernest Belic , Sebastjan Kamensek , Andrej Mesaric
Abstract: A surge protective device (SPD) includes a first electrical terminal, a second electrical terminal, and an overvoltage protection circuit connected between the first and second electrical terminals. The overvoltage protection circuit includes a gas discharge tube and a current management circuit connected in series to the gas discharge tube. The current management circuit includes a varistor and a resistor that are connected in parallel between a first node of the current management circuit and a second node of the current management circuit.
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公开(公告)号：US20240313521A1
公开(公告)日：2024-09-19
申请号：US18422579
申请日：2024-01-25
Applicant: DCBEL INC.
Inventor： Cedric SOMERS , Marc-André FORGET
CPC classification number: H02H1/0015 , H02H3/025 , H02S50/10
Abstract: The present disclosure provides a system, apparatus and method for providing rapid shutdown for photovoltaic power systems and provides a system, apparatus and method for providing arc sensing for photovoltaic power systems. An AC current can be put on the DC bus to control PV panel shutdown. Local mean decomposition can be used to sense arcing on the DC bus.
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公开(公告)号：US12020878B2
公开(公告)日：2024-06-25
申请号：US18318177
申请日：2023-05-16
Applicant: GE Aviation Systems Limited
Inventor： Peter Roy Payne , John Houghton , Robert Henry Keith Miles Bullock
CPC classification number: H01H47/18 , B64D41/00 , H01H9/56 , H01H33/59 , H01H47/002 , H01H47/26 , B64D2221/00 , H01H33/593 , H02H3/021
Abstract: A contactor apparatus and method for operating the contactor apparatus can include a contactor assembly with a contactor coil operably coupled to a contactor switch. One or more sensors can be provided in the contactor assembly adapted to measure one or more aspects of the contactor assembly. Based upon the measured aspects, a controller can initiate operation of the contactor switch to effectively toggle the contactor switch at a zero-crossing point along an alternating current waveform.
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公开(公告)号：US20240195166A1
公开(公告)日：2024-06-13
申请号：US18537542
申请日：2023-12-12
Applicant: Battelle Memorial Institute
Inventor： Bhaskar Mitra , Nimat Shamim , Sheik Mohammad Mohiuddin , Manisha Maharjan , Ahmad Tbaileh , Quan H. Nguyen , Jinho Kim , Nader A. Samaan
Abstract: Circuit breakers and associated methods are described. According to one aspect, a circuit breaker includes an input node configured to receive an AC waveform of electrical energy, an output node configured to output the AC waveform, mechanical breaker circuitry configured to selectively operate in a conductive state to conduct the AC waveform from the input node to the output node, switching circuitry configured to selectively operate in a conductive state to conduct the AC waveform from the input node to the output node, energy absorption circuitry coupled with the input node and the output node, wherein the mechanical breaker circuitry and the switching circuitry are changed from the conductive state to a non-conductive state after detection of a fault, and wherein the energy absorption circuitry is configured to dissipate electrical energy of the fault after the mechanical breaker circuitry and the switching circuitry are changed to the non-conductive state.
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Patent Agency Ranking
公开(公告)号：US12009653B2
公开(公告)日：2024-06-11
申请号：US17384410
申请日：2021-07-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanxing Yang , Haibo Long , Zehua Liang , Wei Guo
CPC classification number: H02H3/08 , H02H3/021 , H02H3/05 , G01R33/07 , G01R33/093 , G01R33/098
Abstract: The control apparatus includes an electrical signal detection unit, a control unit, a contactor, a first execution unit, a protection unit, and a second execution unit. The electrical signal detection unit detects an electrical signal on a loop, and send the electrical signal to the control unit. The control unit generates a control signal, and send the control signal to the first execution unit. The contactor is connected to the loop. The first execution unit controls the contactor to be closed or opened, where when the contactor is closed, the loop is connected, and when the contactor is opened, the loop is disconnected. The protection unit detects a current value on the loop when the contactor is closed, where an opening instruction is sent to the second execution unit when the current value reaches a trip threshold. The second execution unit opens the contactor when receiving the opening instruction.
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公开(公告)号：US20240162700A1
公开(公告)日：2024-05-16
申请号：US18422619
申请日：2024-01-25
Applicant: DCBEL INC.
Inventor： Cedric SOMERS , Marc-André FORGET
CPC classification number: H02H1/0015 , H02H3/025 , H02S50/10
Abstract: The present disclosure provides a system, apparatus and method for providing rapid shutdown for photovoltaic power systems and provides a system, apparatus and method for providing arc sensing for photovoltaic power systems. An AC current can be put on the DC bus to control PV panel shutdown. Local mean decomposition can be used to sense arcing on the DC bus.
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公开(公告)号：US11949228B1
公开(公告)日：2024-04-02
申请号：US17644962
申请日：2021-12-17
Applicant: Arthur Thomas Bradley
Inventor： Arthur Thomas Bradley
Abstract: A multi-stage surge protection device protects against complex, time-variant voltage transients, including those resulting from a high-altitude nuclear electromagnetic pulse or a solar coronal mass ejection. The transient voltage suppressor limits the let-through voltage to a clamping level and provides indication to the crowbar circuit when it is no longer able to do so. Once the clamping level is no longer able to be maintained, the crowbar circuit draws enough current to trip an upstream protective device, such as a breaker or fuse. A low-pass filter can be added to significantly lower the let-through voltage of the device for short-duration pulses, and help to spread the energy to more effectively utilize the transient voltage suppressor.
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公开(公告)号：US11929605B2
公开(公告)日：2024-03-12
申请号：US17637148
申请日：2020-11-04
Applicant: Mitsubishi Electric Corporation
Inventor： Tomokazu Kojima
CPC classification number: H02H3/021 , H01L29/6609 , H02H1/0007
Abstract: First and second output transistors are connected in series between a power supply terminal and a ground terminal through an output node connected to an output terminal. An output transistor control circuit is arranged corresponding to at least one of the first and second output transistors and is configured to input a voltage at the output terminal to the gate of the first output transistor at a time of occurrence of disconnection of the power supply terminal and input the same to the gate of the second output transistor at a time of occurrence of disconnection of the ground terminal. The first output transistor has a conductivity type to turn off when a power supply voltage is input to the gate, and the second output transistor has a conductivity type to turn off when a ground voltage is input to the gate.
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公开(公告)号：US11876366B2
公开(公告)日：2024-01-16
申请号：US18062980
申请日：2022-12-07
Applicant: STMicroelectronics (Alps) SAS
Inventor： Michel Bouche
Abstract: An embodiment of the present disclosure relates to an electronic circuit including a first switch coupling a first node of the circuit to an input/output terminal of the circuit; a second switch coupling the first node to a second node of application of a fixed potential; and a high-pass filter having an input coupled to the terminal and an output coupled to a control terminal of the second switch.
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