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公开(公告)号：US12081016B2
公开(公告)日：2024-09-03
申请号：US17886180
申请日：2022-08-11
发明人： Lei Li
CPC分类号： H02H7/12 , H02H1/0007
摘要： A method for controlling an efuse circuit is provided. The method includes the following steps. A sample signal of a switch is provided. An error signal is generated according to the sample signal and a reference signal. The error signal is compared with a threshold. A voltage across a control node of the switch and an output node of the switch is clamped to a preset voltage value when the error signal is greater than the threshold.
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公开(公告)号：US20240290236A1
公开(公告)日：2024-08-29
申请号：US18655323
申请日：2024-05-06
发明人： JIN-TAEK HONG , SUNGCHUN PARK
CPC分类号： G09G3/20 , H02H1/0007 , H02H7/12 , H02M1/0009 , H02M3/158 , G09G2330/021 , G09G2330/04
摘要： A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.
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公开(公告)号：US12074430B2
公开(公告)日：2024-08-27
申请号：US17577191
申请日：2022-01-17
发明人： Benjamin Schwabe
CPC分类号： H02H7/12 , H02H1/0007
摘要： A method and apparatus for estimating stress on capacitor is provided. A power converter may include an input terminal for receiving an input voltage, a power stage coupled to the input terminal, a capacitor coupled to the power stage, a controller configured to control the power stage to generate an output voltage at the capacitor as a function of the input voltage, and a stress monitor module. The stress monitor module is configured to determine a stress energy metric for the capacitor based on variations in the output voltage and identify a first fault condition based on the stress energy metric.
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公开(公告)号：US12009765B2
公开(公告)日：2024-06-11
申请号：US17432175
申请日：2020-02-20
IPC分类号： H02P29/024 , H02H1/00 , H02H3/05 , H02H3/08 , H02H3/093 , H02H7/08 , H02H7/12 , H02H7/122 , H02H7/22 , H02P23/14
CPC分类号： H02P29/027 , H02H1/0007 , H02H3/05 , H02H3/08 , H02H3/093 , H02H7/08 , H02H7/12 , H02H7/1227 , H02H7/222 , H02P23/14
摘要： A load protection apparatus for protecting an electrical load connected to an output terminal of the load protection apparatus against overcurrent, includes an overcurrent protection circuit having a power switch through which the electrical load receives an electrical load current via the output terminal and having a sensor component connected in series with the power switch. The sensor component is adapted to directly generate a voltage drop corresponding to the current rise speed of the electrical load current flowing from an input terminal of the load control apparatus, via the sensor component and the power switch to the output terminal. The sensor component further includes a driver circuit adapted to detect an occurring overcurrent depending on the voltage drop generated by the sensor component and depending on a voltage drop along the power switch adapted to switch off said power switch upon detection of an overcurrent within a switch-off period.
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公开(公告)号：US20240063632A1
公开(公告)日：2024-02-22
申请号：US17893074
申请日：2022-08-22
CPC分类号： H02H7/12 , H02H1/0007
摘要： A disclosed apparatus may include (1) a voltage regulator module configured to convert electric power into at least one regulated voltage, (2) a controller configured to control passage of the electric power to the voltage regulator module, and (3) a computing device configured to (A) be powered by the regulated voltage and (B) provide a disable signal that causes the controller to suspend passage of the electric power to the voltage regulator module. Various other apparatuses, systems, and methods are also disclosed.
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公开(公告)号：US11682896B2
公开(公告)日：2023-06-20
申请号：US17341621
申请日：2021-06-08
发明人： Mark L. Demarie , Luke L. Jenkins
CPC分类号： H02H7/12 , H02H1/0007 , H02J9/005
摘要： Embodiments include redundant power supplies and method for fault detection in a redundant power supply. Aspects include monitoring a voltage at local output nodes of each phase of the redundant power supply, wherein the local output nodes are each connected to an output bus of the redundant power supply via a feedback path. Aspects also include creating an alert that a phase associated with the local output node has failed based on a determination that the voltage at the local output node is within a fault range.
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公开(公告)号：US20180278046A1
公开(公告)日：2018-09-27
申请号：US15542334
申请日：2015-02-13
发明人： Takuo ARAMAKI
IPC分类号： H02H7/125
摘要： A protection device for a power converter provided between an AC system and a DC power transmission system is configured to: receive an input of an AC current value obtained between a transformer connected to the AC system and the power converter capable of converting AC power into DC power; receive an input of a change rate of a direct current detected by a Rogowski coil provided between a DC line and the power converter, the DC line receiving DC power from the power converter; determine based on the AC current value and the change rate whether a fault occurs or not in one of the power converter and the DC line; and output information for protecting the power converter based on a determination result.
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公开(公告)号：US20170229964A1
公开(公告)日：2017-08-10
申请号：US15425096
申请日：2017-02-06
申请人： Visedo Oy
发明人： Tero JARVELAINEN , Kimmo RAUMA
CPC分类号： H02M3/158 , B60L11/005 , B60L11/1803 , B60L2200/32 , B60L2210/40 , H02H1/06 , H02H3/087 , H02H3/20 , H02H7/12 , H02H7/1213 , H02H7/268 , H02P27/06 , Y02T10/7005 , Y02T10/7022 , Y02T10/7241
摘要： An electric power system includes a direct voltage rail (101), battery elements (102-104) connected with supply-converters (105-107) to the direct voltage rail, and load-converters (111-113) for converting direct voltage of the direct voltage rail into voltages suitable for loads of the electric power system, where the supply-converters and the load-converters are connected with over-current protectors (108-110, 114-116) to the direct voltage rail. The electric power system further includes a capacitor system (117) connected to the direct voltage rail and capable of supplying fault current for switching an over-current protector into a non-conductive state in response to a fault causing a voltage drop at an electrical node connected to the direct voltage rail via the over-current protector. The capacitor system may include one or more high-capacitance electric double layer capacitors. The fault current available from the capacitor system enables a selective protection.
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公开(公告)号：US09608436B2
公开(公告)日：2017-03-28
申请号：US14402648
申请日：2013-05-16
发明人： Carl David Barker
CPC分类号： H02H7/22 , H02H3/07 , H02H7/12 , H02H7/268 , H02H11/00 , H02J3/36 , H02M2007/4835 , Y02E60/60
摘要： There is a method of fault clearance for a voltage source converter that interconnects a DC network and an AC network. The voltage source converter is connected to the DC network via one or more DC circuit interruption devices. The method comprises the steps of: (a) detecting a fault in the DC network; (b) carrying out a primary protection sequence, wherein the step of carrying out the primary protection sequence involves carrying out a first sub-sequence that includes the steps of: i. opening the or each DC circuit interruption device, ii. setting a DC power order of the voltage source converter to zero, iii. controlling the voltage source converter to exchange re-circuit breaker active power with the AC network.
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10.发明授权System and method providing reliable over current protection for power converter 有权为电源转换器提供可靠的过流保护的系统和方法公开(公告)号：US09577536B2
公开(公告)日：2017-02-21
申请号：US14639607
申请日：2015-03-05
发明人： Dongze Yang , Xiaomin Huang , Xiaozhi Kang , Yuan Lin , Huawei Lyu , Lieyi Fang
CPC分类号： H02H7/125 , H02H7/12 , H02H9/025 , H02M1/08 , H02M1/32 , H02M1/44 , H02M3/33507 , H02M3/33523 , H02M2001/0009
摘要： System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.
摘要翻译： 用于保护电源转换器的系统控制器和方法。 系统控制器包括第一控制器端子，其被配置为将驱动信号输出到开关以影响流过功率转换器的初级绕组的第一电流。 功率转换器还包括耦合到初级绕组的次级绕组，并且驱动信号与一个或多个开关周期相关联。 此外，系统控制器包括被配置为从感测电阻器接收感测电压的第二控制器端子。 感测电压表示流过功率转换器的初级绕组的第一电流的大小。 系统控制器被配置为处理与感测电压和参考电压相关联的信息，并且确定功率转换器的平均输出电流是否大于电流阈值。
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