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公开(公告)号：US20240235441A9
公开(公告)日：2024-07-11
申请号：US18276740
申请日：2022-02-10
发明人： Jin Li , Xin Zhou , Steven A. Dimino , Kaijam Maurice Woodley
CPC分类号： H02P6/20 , H01H9/56 , H01H2009/543
摘要： Systems and methods for soft starting a motor (40) using solid-state switching devices are disclosed. The system (10) includes a soft starting switch (53) that is made of a plurality of solid-state switches (62, 63). The system (10) also includes a controller (86) that is programmed to regulate currents and voltages delivered to the motor (40) during a start-up operation of the motor by cycling the solid-state switches (62, 63) ON and OFF during the start-up operation.
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公开(公告)号：US20230420933A1
公开(公告)日：2023-12-28
申请号：US18337920
申请日：2023-06-20
申请人： ABB Schweiz AG
摘要： A start-up method for reducing inrush current to a transformer when closing a switching device. The switching device includes three single-pole operated current interrupting means. The method includes monitoring a voltage. The method includes, for each of a sequence of iterations: at a same opening angle relative to a reference angle of the voltage, starting an opening sequence of the switching device; at a closing angle relative to the reference angle, which is shifted in relation to the closing angle of all other iterations in the sequence, starting a closing sequence of the switching device; and obtaining an indication of the overall inrush current resulting from the closing. The method includes selecting for future use with the opening angle, the closing angle of one of the iterations in which the overall inrush current is relatively low when compared with the other iterations of the sequence.
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公开(公告)号：US20230290597A1
公开(公告)日：2023-09-14
申请号：US18318177
申请日：2023-05-16
CPC分类号： H01H47/18 , B64D41/00 , H01H47/002 , H01H47/26 , H01H33/59 , H01H9/56 , B64D2221/00 , H02H3/021
摘要： 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：US11682891B2
公开(公告)日：2023-06-20
申请号：US17047613
申请日：2020-05-18
IPC分类号： H02H3/08 , H01H71/04 , H01H71/12 , H02H1/00 , H01H71/24 , G01R15/20 , H02H3/33 , G01R19/175 , H01H9/54 , H01H9/56 , H01H33/59 , H02J13/00 , H02M7/06
CPC分类号： H02H3/08 , G01R15/202 , G01R19/175 , H01H9/542 , H01H9/548 , H01H9/56 , H01H9/563 , H01H33/593 , H01H71/04 , H01H71/128 , H01H71/24 , H02H1/0007 , H02H1/0092 , H02H3/33 , H02J13/00022 , H01H2009/543 , H01H2009/546 , H01H2300/03 , H02H3/085 , H02M7/06
摘要： A circuit breaker includes an electromechanical switch, a current sensor, a voltage sensor, and a processor. The electromechanical switch is serially connected between a line input terminal and a load output terminal of the circuit breaker, and configured to be placed in a switched-closed state or a switched-open state. The current sensor is configured to sense a magnitude of current flowing in a path between the line input and load output terminals and generate a current sense signal. The voltage sensor is configured to sense a magnitude of voltage at a point on the path between the line input and load output terminals and generate a voltage sense signal. The processor is configured to receive and process the current sense signal and the voltage sense signal to determine operational status information of the circuit breaker and determine power usage information of a load connected to the load output terminal.
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公开(公告)号：US20230162937A1
公开(公告)日：2023-05-25
申请号：US18094738
申请日：2023-01-09
IPC分类号： H01H71/04 , H01H71/12 , H02H1/00 , H02H3/08 , H01H71/24 , G01R15/20 , H02H3/33 , G01R19/175 , H01H9/54 , H01H9/56 , H01H33/59 , H02J13/00
CPC分类号： H01H71/04 , H01H71/128 , H02H1/0092 , H02H1/0007 , H02H3/08 , H01H71/24 , G01R15/202 , H02H3/33 , G01R19/175 , H01H9/542 , H01H9/563 , H01H33/593 , H02J13/00022 , H01H9/548 , H01H9/56 , H02M7/06
摘要： A circuit breaker comprises a solid-state bidirectional switch, a switch control circuit, current and voltage sensors, and a processor. The solid-state bidirectional switch is connected between a line input terminal and a load output terminal of the circuit breaker, and configured to be placed in a switched-on state and a switched-off state. The switch control circuit control operation of the bidirectional switch. The current sensor is configured to sense a magnitude of current flowing in an electrical path between the line input and load output terminals and generate a current sense signal. The voltage sensor is configured to sense a magnitude of voltage on the electrical path and generate a voltage sense signal. The processor is configured to process the current and voltage sense signals to determine operational status information of the circuit breaker, a fault event, and power usage information of a load connected to the load output terminal.
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公开(公告)号：US20230141780A1
公开(公告)日：2023-05-11
申请号：US18149113
申请日：2023-01-01
摘要： A load control device may control power delivered to an electrical load from an AC power source. The load control device may include a controllably conductive device adapted to be coupled in series electrical connection between the AC power source and the electrical load, a zero-cross detect circuit configured to generate a zero-cross signal representative of the zero-crossings of an AC voltage. The zero-cross signal may be characterized by pulses occurring in time with the zero-crossings of the AC voltage. The load control device may include a control circuit operatively coupled to the controllably conductive device and the zero cross detect circuit. The control circuit may be configured to identify a rising-edge time and a falling-edge time of one of the pulses of the zero-cross signal, and may control a conductive state of the controllably conductive device based on the rising-edge time and the falling-edge time of the pulse.
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公开(公告)号：US20190206639A1
公开(公告)日：2019-07-04
申请号：US16331537
申请日：2017-09-08
发明人： Kenan ASKAN
CPC分类号： H01H9/542 , H01C7/12 , H01H9/548 , H01H9/56 , H01H9/563 , H01H2009/543 , H01H2009/544 , H02H3/021 , H02H3/023 , H02H3/08
摘要： A circuit breaker includes: at least one external conductor section from an external conductor supply connection in the circuit breaker to an external conductor load connection in the circuit breaker; and a neutral conductor section from a neutral conductor connection in the circuit breaker to a neutral conductor connection in the circuit breaker. The at least one external conductor section includes a mechanical bypass switch and a first mechanical isolating switch which are serially arranged. A second mechanical isolating switch is arranged in the neutral conductor section. A semiconductor circuit arrangement in the circuit breaker is connected in parallel to the bypass switch. A current measuring device is arranged in the at least one external conductor section that is linked to an electronic control unit in the circuit breaker. The electronic control unit operates the bypass switch, the first and second mechanical isolating switches, and the semiconductor circuit arrangement.
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公开(公告)号：US20190190254A1
公开(公告)日：2019-06-20
申请号：US16327809
申请日：2016-08-23
申请人： ABB Schweiz AG
发明人： Urmil PARIKH , Michael STANEK
摘要： In aspects, the present invention provides a method for phase controlled energizing of a power transformer (130). The method comprises acquiring electrical voltage signal from a voltage sensing device (160, 170) connected to the power transformer when a circuit breaker (140) disconnects the power transformer from a power source (110). Determining a first characterizing data in the voltage signal within a pre-determined set of cycles at about an opening operation of the circuit breaker and determining a second characterizing data within the pre-determined set of cycles in the voltage signal subsequent to the opening operation of the circuit breaker. Estimating a level of magnetization of the core of the power transformer based on at least one of second characterizing data, and the first characterizing data and the second characterizing data. Operating the circuit breaker at a determined instant of switching based on the estimated level of magnetization for a phase controlled energizing of the power transformer by the circuit breaker.
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9.发明授权公开(公告)号：US10074971B2
公开(公告)日：2018-09-11
申请号：US14594702
申请日：2015-01-12
CPC分类号： H02H9/002 , H01F27/34 , H01H9/56 , H01H9/563 , H01H33/593
摘要： According to one embodiment, an excitation inrush current suppressing apparatus comprising: bus voltage measurement equipment which measures each phase voltage of the single-phase AC-side bus; transformer voltage measurement equipment which measures a single-phase-side voltage of the transformer; phase detector which detects a cutoff phase when opening the circuit breaker by monitoring each phase voltage measured by the bus voltage measurement equipment and the single-phase-side voltage measured by the transformer voltage measurement equipment, holds the detected cutoff phase, and outputs the same phase as the held cutoff phase; and close command output device which closes the circuit breaker by the same voltage phase as the cutoff phase output from the phase detector.
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公开(公告)号：US10018676B2
公开(公告)日：2018-07-10
申请号：US14832762
申请日：2015-08-21
IPC分类号： H01H9/20 , G01R31/327 , H01H50/16 , G01K7/00 , H01H47/00 , H01H47/22 , H01H50/00 , H01H47/26 , H01H47/02 , H01H50/38 , H01H50/32 , H01H89/00 , H02P1/26 , H01H9/26 , H01H9/30 , H02P1/32 , H01H9/56 , H01H71/08
CPC分类号： G01R31/327 , G01K7/00 , G01R31/3274 , G01R31/44 , H01H9/26 , H01H9/56 , H01H47/002 , H01H47/02 , H01H47/22 , H01H47/26 , H01H50/002 , H01H50/16 , H01H50/323 , H01H50/38 , H01H71/082 , H01H89/00 , H01H2009/307 , H02P1/26 , H02P1/32 , H05K999/99
摘要： One embodiment describes an interlock for an electromechanical switching system, which includes a housing; a first camming lockout member disposed in the housing and that contacts an auxiliary operator of a first electromechanical switching device; a second camming lockout member disposed in the housing and that contacts an auxiliary operator of a second electromechanical switching device, which the first camming lockout members contacts the second camming lockout member when the first camming lockout member is moved to an actuated position by the first electromechanical switching device to prevent movement of the second camming lockout member to an actuated position.
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