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公开(公告)号：US12107408B2
公开(公告)日：2024-10-01
申请号：US17567909
申请日：2022-01-04
摘要： A circuit breaker system includes a first circuit breaker and a second circuit breaker. The first circuit breaker has a first trip unit, a first control unit, and a first electrical sensor. The first control unit is configured to control the first trip unit. The second circuit breaker has a second trip unit, a second control unit, and a second electrical sensor. The second control unit is configured to control the second trip unit. The first control unit is in communication with the second control unit. The first control unit is configured to monitor the communication with the second control unit to determine whether there is an internal device failure in the second circuit breaker. The first control unit is configured to change the first control unit's standard tripping characteristics to emergency tripping characteristics based on detecting the internal device failure of the second circuit breaker.
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公开(公告)号：US20240275160A1
公开(公告)日：2024-08-15
申请号：US18641740
申请日：2024-04-22
申请人： ROHM CO., LTD.
IPC分类号： H02H3/08
CPC分类号： H02H3/08
摘要： An overcurrent protection circuit includes a first mirror transistor configured to be driven by a first drive signal, common to a first output transistor, so as to pass a first mirror current, a second mirror transistor configured to be driven by a second drive signal so as to pass a second mirror current, a resistor configured to be connected between a control terminal of each of the first output transistor and the first mirror transistor and a control terminal of the second mirror transistor, and a current restriction unit configured to control the first drive signal such that a sense current, which is a total of the first mirror current and the second mirror current, is restricted to values equal to or less than a predetermined upper limit value.
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公开(公告)号：US12057693B2
公开(公告)日：2024-08-06
申请号：US17598416
申请日：2019-03-29
发明人： Feng Du , Wei Gang Chen
CPC分类号： H02H3/033 , H02H1/0007 , H02H1/0092 , H02H3/08
摘要： A hybrid circuit breaker includes a semiconductor circuit breaker, connected between a first output end of a converter of a power supply or a source branch and a first end of a damping module; a first mechanical circuit breaker, connected in parallel to the semiconductor circuit breaker, an energy absorber, connected in parallel to the semiconductor circuit breaker, and a controller coupled to the semiconductor circuit breaker and the first mechanical circuit breaker, and when a current flowing through the converter is greater than a safe current, the controller is configured to control the first mechanical circuit breaker to be disconnected, and control the semiconductor circuit breaker to be closed.
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公开(公告)号：US20240258787A1
公开(公告)日：2024-08-01
申请号：US18636313
申请日：2024-04-16
发明人： Jinbiao Li , Yu Yan , Zhimin Dan
IPC分类号： H02H3/08
CPC分类号： H02H3/08
摘要： A circuit control method is provided, in which a control module receives a target control instruction for pre-charging a target. The control module may be configured to select a main switch unit (Main-SU) and an auxiliary switch unit (Aux-SU) associated with the target, and control the Aux-SU to be in a continuous-on state. The control module may then control a semiconductor switch unit (Semi-SU) to be in an intermittent-on state to allow pre-charging of the target via the Semi-SU and the Aux-SU. After the target is pre-charged, the control module may control the Main-SU to be in an on-state, and control the Aux-SU and then the Semi-SU to be in an off-state.
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公开(公告)号：US20240249901A1
公开(公告)日：2024-07-25
申请号：US18158131
申请日：2023-01-23
申请人： Atomica Corp.
CPC分类号： H01H47/002 , H01H50/005 , H01H59/0009 , H02H1/0007 , H02H3/08
摘要： A microelectromechanical systems (MEMS) switch device including current sensing and overcurrent protection can include a movable plate movable between an open position and a closed position, wherein the moveable plate is moved by applying at least one or more of an electrostatic force and a magnetic force to move the movable plate. The movable plate can include a shunt operable to conduct current when the movable plate is the closed position. An inductive coil electronically coupled to the shunt can detect current conducted through the shunt.
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公开(公告)号：US12046891B2
公开(公告)日：2024-07-23
申请号：US17876677
申请日：2022-07-29
申请人： S&C Electric Company
发明人： Thomas J. Tobin
摘要： A method for determining an optimized TCC operating curve for an electronic interrupting device that protects a distribution transformer in a power distribution network, where the TCC operating curve is some optimized predetermined percentage above a TCC curve for normal transformer operation. The method includes providing a TCC transformer curve that identifies an allowed transformer operation current once the transformer magnetics have been stabilized and the transformer is operating normally, and determining a TCC operating curve that is defined by points along the transformer curve plus a predetermined percentage above the transformer curve, where the operating curve identifies a response time for when the electronic interrupting device will open in response to a certain current flow.
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7.发明公开公开(公告)号：US20240235176A1
公开(公告)日：2024-07-11
申请号：US18563243
申请日：2022-11-08
发明人： Hyun-Tak KIM , Tae Moon ROH
IPC分类号： H02H3/08
CPC分类号： H02H3/08
摘要： Disclosed is a discontinuous jump current breaker, in an AC power system having an insulating material that exhibits nonlinear electrical characteristics between two electrodes, which blocks an AC power by observing a discontinuous jump current in which an insulator-metal transition occurs. The discontinuous jump current breaker includes a setting unit that sets the magnitude of a discontinuous jump current, a sensor unit including a metallic wire (Republic of Korea Patent Registration No. 10-1981640) parallel to an AC power wire, located at a separation distance d≥0, and that measures electromagnetic waves of an AC power, an amplifier unit that amplifies an analog signal of the metal wire, an analog-to-digital converter that converts the amplified analog signal to digital, a microcontroller unit including a memory unit for storing a program that drives the system, and a power blocking unit that blocks the discontinuous jump current.
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公开(公告)号：US12021512B2
公开(公告)日：2024-06-25
申请号：US17430262
申请日：2020-02-12
IPC分类号： H02H3/08 , H02H9/02 , H03K17/082 , H03K17/16
CPC分类号： H03K17/0822 , H03K17/165 , H02H3/08 , H03K2217/0027
摘要： An electronic switch for connecting units of a power supply system has a semiconductor switch, an actuation circuit and a current/voltage sensor for detecting current flow through the electronic switch. The actuation circuit operates the semiconductor switch, depending on oscillations measured by the current/voltage sensor, in an activated state, a deactivated state or a linear mode. A power supply system having the electronic switch for connecting with the electronic switch two electrical sub-networks and a method for operating the electronic switch are also disclosed. The semiconductor switch is operated at least temporarily in the linear mode for damping oscillations.
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公开(公告)号：US12021369B2
公开(公告)日：2024-06-25
申请号：US16931448
申请日：2020-07-17
申请人： TMEIC CORPORATION
CPC分类号： H02H3/08 , H03K5/00 , H03K19/20 , H03M1/124 , H03K2005/00026
摘要： An impulse voltage generation device comprises: a high voltage generator to generate high DC voltage; a capacitor that is disposed in parallel to the high voltage generator and can be charged to a high voltage state; a power semiconductor switch that is placed at an output side of the high voltage generator and in series to the high voltage generator and is designed to shut off or allow electricity output from the high voltage generator; a function generator to output changes over time of impulse voltage to be applied to the test target; a current detector to detect output current; and an overcurrent protection circuit that is configured to conduct analog-to-digital conversion at sampling intervals sufficiently shorter than the application intervals when receiving a current signal from the current detector, monitors values of the output current, and to block output from the function generator to the power semiconductor switch if it is determined that there is an abnormality.
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公开(公告)号：US20240206123A1
公开(公告)日：2024-06-20
申请号：US18083957
申请日：2022-12-19
CPC分类号： H05K7/20381 , H02H3/08 , H05K7/20309 , H05K7/20318 , H05K7/20336 , H05K7/20409
摘要： A thermal management device for a circuit breaker includes: a heat pipe having an evaporator section, an adiabatic section and a condenser section; a busbar having a first portion including at least a portion of the adiabatic section of the heat pipe; a conducting busbar having a first end, a second end opposite the first end and a groove disposed on a top surface of the conducting busbar, the first end disposed adjacent to primary contacts, the second end integrated in the first portion of the busbar, the groove extending from the first end to the second end and including the evaporator section and the at least a portion of the adiabatic section of the heat pipe embedded therein; and an array of fins integrated to the second portion of the busbar, the condenser section of the heat pipe extending through the array of fins.
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