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公开(公告)号：US12132303B2
公开(公告)日：2024-10-29
申请号：US18110509
申请日：2023-02-16
发明人： Shahab Mehraeen , Sudipta Sen
CPC分类号： H02H3/087 , G01R31/3272 , H01H9/54 , H01H33/596 , H02H1/063 , H02H3/021 , H02H9/02 , H03K17/13
摘要： The present disclosure provides a DC mechanical circuit breaker that can utilize two switches, one of which can generate zero-crossing with an alternate oscillatory circuit for the other one, which can be a conventional zero-crossing-based AC breaker and can be used in the main circuit. This is different from the conventional single-switch commute-and-absorb method currently used. The present disclosure shows that disclosed circuit breaker improves the fault current extinction and significantly reduces the voltage rate-of-change while creating the current zero-crossing faster compared to the available technology. Thus, disclosed circuit breaker is capable of interrupting high DC currents with minimal arc through a less expensive AC circuit breaker. Simulation and hardware results are provided to show the efficiency of the disclosed circuit breaker.
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2.发明授权公开(公告)号：US12128776B2
公开(公告)日：2024-10-29
申请号：US17638963
申请日：2020-09-03
申请人： Scania CV AB
摘要： An electronic circuit breaker comprising: an input connected to an electric DC power supply; an output connected to a load; the input connected to the output via a switch, said switch is controlled via a switch control line between an “ON”-state and an “OFF”-state; a switch driver connected to the switch control line, said switch driver configured to control the switch; and a switch protection, a voltage detection branch configured to output a first electric potential indicative of the electrical potential difference between the input and the output; a comparator circuit configured to compare the first electrical potential with a first threshold voltage, said first threshold voltage is indicative of an over-current level flowing through the switch; and a gate controller connected to the switch disable line and configured to disable the switch by connecting the switch control line to a potential which causes the switch to enter the “OFF”-state.
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3.发明公开公开(公告)号：US20240305086A1
公开(公告)日：2024-09-12
申请号：US18179548
申请日：2023-03-07
发明人： Guang Yang
CPC分类号： H02H3/087 , H02H9/043 , H03K17/161
摘要： A DC solid-state circuit breaker is provided with a solid-state aided airgap to ensure successful interruption of current at DC conditions for providing an acceptable fail-safe mechanism in case of main power electronics failure. The DC solid-state circuit breaker comprises a sensing and control circuit configured to realize designed functions. The DC solid-state circuit breaker further comprises a power electronics section that includes a first solid-state switching component for normal operations. The DC solid-state circuit breaker further comprises an air gap section disposed in series with the power electronics section and is configured to perform fail-safe interruption and to provide isolation. The air gap section includes an isolation switch which is connected in series to a fail-safe interruption combination of a current commutation switch and a second solid-state switching component, which are connected in parallel.
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4.发明授权公开(公告)号：US12088131B2
公开(公告)日：2024-09-10
申请号：US17647549
申请日：2022-01-10
CPC分类号： H02J7/00304 , B60L53/62 , B60L53/63 , B60L58/12 , B60L58/20 , H02H3/087 , H02J7/00032 , H02J7/0013 , H02J7/0048 , H02J7/007194 , H02J7/342 , B60L2240/545 , B60L2240/547
摘要： A system includes an electric mobile application having a configurable charging circuit, the configurable charging circuit including an AC charging circuit couplable to a charging station on a first side, a DC charging circuit selectively couplable to a high voltage battery of the electric mobile application on a first side, and a switch interposed between the AC and DC charging circuits, where the switch provides selective coupling between the AC charging circuit on a second side and the DC charging circuit on a second side, where the switch in a first position couples the AC charging circuit to the DC charging circuit through a first inductive coupling arrangement utilizing a magnetic component, and where the switch in a second position couples the AC charging circuit to the DC charging circuit through a second inductive coupling arrangement utilizing the magnetic component.
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公开(公告)号：US12051894B2
公开(公告)日：2024-07-30
申请号：US17440847
申请日：2020-03-11
发明人： Thomas Beckert , Jens Weidauer
CPC分类号： H02H3/087 , H01H9/548 , H02H3/066 , H02H3/081 , H03K17/567 , H03K2017/515
摘要： A DC voltage switch includes a semiconductor-based electronically controllable switching device, a sensor provided upstream of the switching device for determining the DC voltage bus-side voltage level, a sensor provided downstream of the switching device for determining the DC voltage branch-side voltage level, a current sensor for determining current level and direction, a control device designed such that the direction and level of the current are determined, the flow of current is interrupted by the switching device when a first threshold value of the current level is exceeded, and when the first threshold value of the current level is exceeded in the reverse direction: the DC voltage bus-side voltage level is compared with the DC voltage branch-side voltage level, and the switching device is switched on upon a voltage difference being less than a voltage difference value.
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公开(公告)号：US20240246420A1
公开(公告)日：2024-07-25
申请号：US18562349
申请日：2022-04-14
发明人： HIDEKI IWAKI , SHINYA SAITO , MIMA FURUKAWA , KENJIRO KUMAZAWA , EIICHI SADAYUKI , TOMOAKI FURUSE
摘要： An in-vehicle cutoff device includes a first input terminal, a first output terminal, a first conductor wire, a second input terminal, a second output terminal, a second conductor wire, a first current detector capable of detecting a current flowing through the first conductor wire or the second conductor wire, a second current detector capable of detecting a current flowing through the first conductor wire or the second conductor wire, a pyrotechnic circuit breaker capable of irreversibly disconnecting the first conductor wire, and controller capable of controlling a cutoff operation of the pyrotechnic circuit breaker in response to the detected currents. The controller causes the cutoff operation of the pyrotechnic circuit breaker to perform the cutoff operation when both of a first current value generated based on a first detection signal and a second current value generated based on the second detection signal exceed an overcurrent threshold.
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公开(公告)号：US20240243568A1
公开(公告)日：2024-07-18
申请号：US18404051
申请日：2024-01-04
申请人： SENAO NETWORKS, INC.
发明人： Pi-Kung KU
摘要： A voltage control system includes a load device and a power supply device. The load device is configured to generate a current signal according to a voltage signal. The power supply device is configured to provide the voltage signal to the load device. The power supply device is further configured to adjust the voltage signal in response to an inrush current of the current signal, and stop adjusting the voltage signal in response to a pulse current of the current signal. The inrush current and the pulse current are arranged in order.
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公开(公告)号：US20240204505A1
公开(公告)日：2024-06-20
申请号：US18522413
申请日：2023-11-29
发明人： Kotaro ASABA , Daisuke UEO , Nobutaka TANAKA , Junya MATSUSHITA , Yohei IMAI , Ryota TANABE
CPC分类号： H02H3/087 , H02H1/0007 , H02J7/00304 , H02J2310/48
摘要： An overcurrent protection device includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, a breaker, a current sensor, and a comparator. A positive terminal and a negative terminal of a power source are connected to the first input terminal and the second input terminal. The second output terminal is connected to the second input terminal. The breaker includes a switch connected between the first input terminal and the first output terminal and opening upon reception of an interrupt command signal. The current sensor measures a difference between a current flowing between the first input terminal and the first output terminal, and a current flowing between the second input terminal and the second output terminal. The comparator sends the interrupt command signal to the breaker when a measurement value of the current sensor exceeds a first current threshold value.
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公开(公告)号：US11909201B2
公开(公告)日：2024-02-20
申请号：US17791397
申请日：2020-02-04
发明人： Masahiro Hario , Yasunori Ido , Noriyuki Imada , Keisuke Ishida
CPC分类号： H02H7/268 , H02H3/087 , H02J3/381 , H02J2300/28
摘要： In a multi-terminal DC power transmission system, a common control device is connected to a plurality of individual protective devices via a first communication network. Each of the individual protective devices is configured, when detecting change in current or voltage in a corresponding protection zone, to output a fault signal to the common control device via the first communication network and open the corresponding DC circuit breaker such that the corresponding protection zone is disconnected from the multi-terminal DC power grid and deenergized. The common control device estimates a fault occurrence zone where a fault occurs among a plurality of protection zones, based on a plurality of received fault signals. The common control device requests an individual protective device corresponding to a deenergized protection zone of the protection zones excluding the fault occurrence zone to reclose the DC circuit breaker such that the deenergized protection zone is restored.
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公开(公告)号：US11909195B2
公开(公告)日：2024-02-20
申请号：US17046133
申请日：2020-09-01
发明人： Jehwan Lee
CPC分类号： H02H3/087 , H02H1/003 , H02H3/0935
摘要： An electronic device having an overcurrent protection function is provided. The electronic device includes at least one power converter, the at least one power converter including a power conversion unit to convert input voltage or input current to supply output current, a control unit to adjust the output current, and an overcurrent protection unit to detect the output current and transmit a detection result to the control unit, and wherein the overcurrent protection unit includes an overcurrent extraction module to output a difference between the output current exceeding designated first reference current and the first reference current; a calculation module to calculate an accumulative value obtained by integrating the difference with respect to time, and a first comparison module to compare the accumulative value with a designated critical value and to transmit a first detection result in which the accumulative value exceeds the critical value to the control unit.
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