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公开(公告)号：US20250070544A1
公开(公告)日：2025-02-27
申请号：US18237216
申请日：2023-08-23
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Michael Thomas Martin , Theodore James Miller , David Walter Brooking
Abstract: A remotely operated circuit interrupter includes: primary separable contacts coupled to an operating mechanism and a thermal-magnetic trip device structured to interrupt current from flowing to loads by opening the primary separable contacts during a fault event; and a fault current tolerant secondary switching mechanism including secondary separable contacts coupled to the primary separable contacts in series, Rogowski coils, a di/dt measurement circuit, a secondary solenoid driver, the Rogowski coils structured to continuously sense a rate (di/dt) of change of load current, the di/dt measurement circuit structured to receive a signal including the sensed di/dt, determine that the sensed di/dt has reached or exceeded a threshold current rate of change, and output a fault signal to the secondary solenoid driver based on the determination, the secondary solenoid driver structured to actuate the solenoids to fully open the secondary separable contacts using arc voltages of the primary and secondary contacts.
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公开(公告)号：US20250067819A1
公开(公告)日：2025-02-27
申请号：US18454498
申请日：2023-08-23
Applicant: ABB Schweiz AG
Inventor： Chandrashekar N , Hetul S. Patel
Abstract: A method for controlling a triode for alternating current (TRIAC), applied to a device, is provided. A voltage is connected to an anode of the TRIAC, and a scaled down voltage is fed into an analog-to-digital converter (ADC) pin of the device. The method includes (1) tracking the voltage at the anode of the TRIAC; (2) applying a trigger pulse to a gate of the TRIAC for a preset time based on the voltage at the anode of the TRIAC reaching a threshold; and (3) detecting whether there is a dip that corresponds to the preset time in the scaled down voltage at the ADC pin of the device. The method further includes, in response to not detecting a dip corresponding to the preset time in the scaled down voltage at the ADC pin, (4) waiting an amount of time; and (5) repeating the steps (1)-(3).
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公开(公告)号：US12237666B2
公开(公告)日：2025-02-25
申请号：US17074523
申请日：2020-10-19
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Zhuoyan Li , Liqiang Zhu , Jiqing Yang , Lieyi Fang
Abstract: System controller and method for a power converter. For example, a system controller for a power converter includes a logic controller configured to generate a modulation signal, and a driver configured to receive the modulation signal, generate a drive signal based at least in part on the modulation signal, and output the drive signal to a switch to affect a current flowing through an inductive winding for a power converter. Additionally, the system controller includes a voltage-to-voltage converter configured to receive a first voltage signal, the modulation signal, and a demagnetization signal, and to generate a second voltage signal based at least in part on the first voltage signal, the modulation signal, and the demagnetization signal.
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公开(公告)号：US12237665B2
公开(公告)日：2025-02-25
申请号：US18173655
申请日：2023-02-23
Applicant: Chengli Li
Inventor： Chengli Li , Long Chen
Abstract: A leakage current detection and interruption device for a power cord includes a switch module that controls an electrical connection of first and second power supply lines because input and output ends; a leakage current detection module, including first and second leakage current detection lines, which respectively detect leakage current signals on the first and second power supply lines and generate self-test fault signals in response to the first and second leakage current detection lines having an open circuit; and a drive module including at least one solenoid, a first semiconductor device forming a first current path from the first to the second power supply line when conductive, and a second semiconductor device forming a second current path from the second to the first power supply line when conductive, to supply current to the solenoid which in turn drives the switch module to disconnect the electrical connection.
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公开(公告)号：US12237125B2
公开(公告)日：2025-02-25
申请号：US17599119
申请日：2019-09-13
Applicant: Siemens Aktiengesellschaft
Inventor： Shivansh Batra , Yi Zhu
IPC: H01H33/59 , H01H9/54 , H02H1/00 , H02H3/087 , H02H7/125 , H02H7/22 , H02H7/26 , H02H9/00 , H02J1/10 , H02J1/12
Abstract: In a method for coordinating a distribution grid of different levels of electromechanical switches and automatically electrically closable apparatuses in a DC circuit, the distribution grid is arranged between feed-in devices and loads and includes at least one busbar. Each of the apparatuses includes an electrical switch to open or close the DC circuit, a fault current detection device, a tripping unit, and a pre-charging apparatus.
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Patent Agency Ranking
公开(公告)号：US20250060422A1
公开(公告)日：2025-02-20
申请号：US18469407
申请日：2023-09-18
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN
Abstract: A leakage current detection and interruption device includes a switch module; a leakage current detection module for detecting leakage current signal on current carrying lines and generating a leakage fault signal in response thereto; a drive module, coupled to the switch module and the leakage current detection module, for driving the switch module to disconnect electrical connection on the current carrying lines in response to the leakage fault signal; a self-test module, coupled to the leakage current detection module and the drive module, for periodically generating a simulated leakage current signal and detecting malfunction in the leakage current detection module and/or drive module, and generating a self-test fault signal in response thereto; and an alarm module, coupled to the self-test module, for generating an alarm signal in response to the leakage fault signal and/or self-test fault signal. The device can alert the user under tripped or malfunction conditions.
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公开(公告)号：US20250055274A1
公开(公告)日：2025-02-13
申请号：US18448221
申请日：2023-08-11
Applicant: ABB Schweiz AG
Inventor： Hany Fawzy Kamel Habib , Thomas Anthony Kendzia, III , Veerakumar Bose , Christopher Alan Belcastro
Abstract: In one aspect, a controller for managing electrical faults in a microgrid is provided. The microgrid includes electrical loads, electrical sources, and circuit protection devices that selectively couple the electrical loads and the electrical sources with each other. The controller comprises at least one processor configured to direct a grid tie switch to open to electrically isolate the microgrid from an electric grid, determine, in response to directing the grid tie switch to open, that an electrical fault exits in the microgrid, and determine whether a fault current of the electrical fault is less than a threshold value. The at least one processor is further configured to direct the grid tie switch to close to electrically connect the microgrid to the electric grid and increase the fault current above the threshold value in response to determining that the fault current is less than the threshold value.
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8.发明授权公开(公告)号：US12224575B2
公开(公告)日：2025-02-11
申请号：US17889188
申请日：2022-08-16
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Kyle B. Adkins , Aiman Kerim , Juerg Merki , Randall S. Langer , Andrew E. Carlson , David Elmiger
Abstract: A method may include receiving, via at least one processor, a first set of data indicative of a fault being present and send a first signal to a breaker based on the first set of data. The first signal may cause the breaker to open a plurality of poles of the breaker. The method may then involve receiving a second set of data indicative of the fault being cleared and sending a second signal to the breaker based on the second set of data. The second signal may cause the breaker to close a first pole of the plurality of poles at a first time and close a second pole of the plurality of poles at a second time different from the first time.
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公开(公告)号：US12222384B2
公开(公告)日：2025-02-11
申请号：US17452284
申请日：2021-10-26
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Florian Brugger , Carlos Humberto Garcia Rojas , Francesco Polo , Tobias Werth
Abstract: The present disclosure relates to circuits for detecting a line short circuit and/or a line interruption in a differentially operated line network, comprising at least one control circuit configured to control at least one common-mode signal of the differentially operated line network vis-à-vis a predefined common-mode signal variable and to indicate a line short circuit and/or a line interruption in the differentially operated line network if at least one control or controlled variable of the control circuit exceeds a predefined threshold value.
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公开(公告)号：US20250047094A1
公开(公告)日：2025-02-06
申请号：US18921626
申请日：2024-10-21
Applicant: Rohm Co., Ltd.
Inventor： Kenichi OKAJIMA
IPC: H02H7/12 , G05F1/56 , G05F1/569 , G05F1/571 , G05F1/575 , G05F1/595 , H02H1/00 , H02H3/20 , H02H9/04 , H02M1/00 , H02M1/088 , H02M1/36 , H02M3/158
Abstract: A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.
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