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11.发明授权公开(公告)号：US12113446B2
公开(公告)日：2024-10-08
申请号：US17698786
申请日：2022-03-18
摘要： A control circuit for controlling a switching stage of an electronic converter includes a first terminal configured to provide a drive signal and a second terminal configured to receive a first feedback signal. A third terminal receives a second feedback signal and a driver circuit provides the drive signal as a function of a PWM signal. A PWM signal generator circuit generates the PWM signal as a function of the first feedback signal, a reference threshold and the second feedback signal or a slope compensation signal. The control circuit is configured to sense an input signal, provide a first compensation parameter, and provide a first compensating signal as a function of a power of the input sensing signal.
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12.发明授权公开(公告)号：US12113433B2
公开(公告)日：2024-10-08
申请号：US17725683
申请日：2022-04-21
CPC分类号： H02M1/32 , H02J3/0012 , H02M1/084 , H02M5/4585
摘要： A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving a commanded state for one or more switching devices thereof. The method also includes receiving a gate-emitter voltage of one or more of the switching devices. Further, the method includes comparing, via at least one comparator, the gate-emitter voltage of the one or more switching devices to a reference voltage range corresponding to the commanded state of the one or more switching devices. In addition, the method includes determining an actual state of the one or more switching devices based on the comparison. Thus, the method also includes implementing a control action based on the actual state of the one or more switching devices.
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公开(公告)号：US20240333139A1
公开(公告)日：2024-10-03
申请号：US18128972
申请日：2023-03-30
发明人： Shengyuan LI , Leon Samuel WANG , I-Ning KU , Xicheng JIANG
摘要： An apparatus includes a circuitry to perform a first startup stage and to vary, during a second startup stage subsequent to the first startup stage, a duty cycle of a pulse controlling one or more switches of the circuitry.
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公开(公告)号：US20240333125A1
公开(公告)日：2024-10-03
申请号：US18623531
申请日：2024-04-01
发明人： TUOFU LIU , QIAN FANG , YUN SUN , XIUHONG ZHANG
CPC分类号： H02M1/0009 , H02M1/32 , H02M3/33507 , H02M3/33571
摘要： Controller and method for a power converter. For example, a controller for a power converter includes: an output-voltage detector configured to detect a value of an output voltage of the power converter and generate a detection signal that represents the detected value of the output voltage; and a peak-current-value determination unit configured to receive the detection signal and determine a peak value of a magnetization current for the power converter in a discontinuous conduction mode; wherein the peak-current-value determination unit is further configured to: determine the peak value of the magnetization current for the power converter in the discontinuous conduction mode based on at least information associated with the detected value of the output voltage of the power converter; and generate a peak signal that represents the determined peak value of the magnetization current.
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公开(公告)号：US12107571B2
公开(公告)日：2024-10-01
申请号：US17942011
申请日：2022-09-09
申请人： DENSO CORPORATION
发明人： Kent Inoue , Kouichi Nishibata
IPC分类号： H03K17/082 , H02M1/32 , H03K17/16
CPC分类号： H03K17/0828 , H03K17/168 , H02M1/32
摘要： A control circuit of a power conversion apparatus is provided with a switch driving unit that drives the upper and lower arm switches; a short circuit control unit that causes the switch driving unit to execute a short circuit control when a failure occurs in the system, the short circuit control turning an ON side switch to an ON state and turning an OFF side switch to an OFF state; a checking unit that executes a checking process to check whether the short circuit control is able to perform correctly; and a protection control unit that causes the switch driving unit to execute a protection control when a failure occurs on either the upper arm switch or the lower arm switch, the protection control turning the switch where the failure occurs to an OFF state. The control circuit enables the protection control during execution of the checking process.
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公开(公告)号：US12107425B2
公开(公告)日：2024-10-01
申请号：US17980812
申请日：2022-11-04
发明人： Xiaofeng Yao , Yang Cheng , Guozhao Duan
CPC分类号： H02J3/381 , H02J3/00125 , H02M1/32 , H02J2300/24
摘要： This application discloses a photovoltaic power generation system and method, and the system includes an inverter and at least one shutdown apparatus. A type of the shutdown apparatus includes at least one of a shutdown device and an optimizer; and an input end of each shutdown apparatus is connected to a corresponding PV module, and power of the corresponding PV module is output. In the system, when a parameter of the inverter meets a preset condition, some shutdown apparatuses are turned off to lower an input voltage of the inverter, and ensure that an input end of the inverter has a direct current source, and the system can operate as usual; and the preset condition is that the input voltage of the inverter is greater than a first preset voltage, or an input current of the inverter is less than a first preset current.
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公开(公告)号：US20240322672A1
公开(公告)日：2024-09-26
申请号：US18581617
申请日：2024-02-20
发明人： Gregory Szczeszynski
摘要： Circuits and methods for protecting a multi-level power converter using no more than two high-voltage FET switches while allowing all or most other power switches to be low-voltage FET switches. Some embodiments provide protective high-voltage top and bottom FETs designed to saturate before the remaining low-power FET switches saturate. Other embodiments may use only low-power FETs for the power switches but provide protective circuits configured to be in an always-ON (conducting) state when in normal power conversion operation, and to quickly switch to an OFF (non-conducting) state in the event of transients or a fault condition. Optionally, one or more of the protective circuits may be used in a controlled manner to limit or block current flow during certain types of fault conditions and/or to limit in-rush current during startup of a power converter.
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公开(公告)号：US12101038B2
公开(公告)日：2024-09-24
申请号：US17532245
申请日：2021-11-22
申请人： ABB Schweiz AG
摘要： An inverter is provided. The inverter includes a DC bus having positive and negative rails and an inverter arm coupled between the positive and negative rails of the DC bus. The inverter arm includes first and second silicon carbide transistor having a current-conducting terminals connected to a central node of the inverter arm. The inverter further includes at least one silicon transistor having a third current-conducting terminal connected to the central node of the inverter arm. The inverter further includes a gate driver circuit configured to switch the first silicon carbide transistor and the second silicon carbide transistor to convert DC from said DC bus into AC, and to switch said at least one silicon transistor, when the inverter arm is subjected to a load-side short circuit current, to freewheel the load-side short circuit current.
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公开(公告)号：US12100960B2
公开(公告)日：2024-09-24
申请号：US17430271
申请日：2020-02-05
CPC分类号： H02J3/36 , H02H1/0015 , H02H7/10 , H02M1/32 , H02M7/003 , H02M7/4835 , H02M7/5387
摘要： An electrical assembly comprises a plurality of modules (36), each module (36) including at least one switching element (38) and at least one energy storage device (40), the or each switching element (38) and the or each energy storage device (40) in each module (36) arranged to be combinable to selectively provide a voltage source, wherein each module (36) includes a respective sensor (46) that is configured to monitor at least one other of the plurality of modules (36), each sensor (46) configured to selectively detect an occurrence of an operational hazard in the or each corresponding monitored module (36).
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公开(公告)号：US20240314985A1
公开(公告)日：2024-09-19
申请号：US18418841
申请日：2024-01-22
发明人： Takanori SHINTANI
CPC分类号： H05K7/20927 , H02M1/327 , H02M3/003 , H02M3/156 , H02M7/003 , H02M7/53871
摘要： A power conversion apparatus includes a converter, an inverter, and a cooler. A cooling flow path is arranged inside the cooler. A converter-side flow path is connected to an inverter-side flow path so that cooling liquid passes through the entire inverter-side flow path and then passes through the converter-side flow path in the cooling flow path.
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