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公开(公告)号：US20240333133A1
公开(公告)日：2024-10-03
申请号：US18621465
申请日：2024-03-29
发明人： Bin QIAN , Yunyu TANG , Yaojia ZHANG , Chao LIU
摘要： A power converter including a drive circuit connected to a power conversion circuit. The drive circuit is configured to: amplify a control signal from the controller, drive a switching tube in the power conversion circuit to be turned on or off, to implement power conversion of the power conversion circuit. The controller is configured to: in response to a voltage of the power conversion circuit being greater than or equal to a first threshold, control the drive circuit to be in a first amplification mode; or the controller is configured to: in response to a voltage of the power conversion circuit being less than a first threshold, control the drive circuit to be in a second amplification mode. An equivalent drive resistance of the drive circuit corresponding to the first amplification mode is greater than an equivalent drive resistance of the drive circuit corresponding to the second amplification mode.
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公开(公告)号：US20240258026A1
公开(公告)日：2024-08-01
申请号：US18630167
申请日：2024-04-09
发明人： Yunyu TANG , Yaojia ZHANG , Lei SHI , Chao LIU
摘要： A photovoltaic converter and a photovoltaic generation system. The photovoltaic converter is configured to electrically connect to a first photovoltaic module and a second photovoltaic module, where the first photovoltaic module includes a first positive electrode output end and a first negative electrode output end, and the second photovoltaic module includes a second positive electrode output end and a second negative electrode output end. The photovoltaic converter includes a current transformer and a power conversion circuit. The current transformer includes a magnetic structure, a first positive primary side winding, a second positive primary side winding, a negative primary side winding, and a first secondary side winding. The three primary side windings all pass through the magnetic structure and are spaced from each other. The first secondary side winding is wound around the magnetic structure. This reduces an occupied board area.
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公开(公告)号：US20240235423A9
公开(公告)日：2024-07-11
申请号：US18489576
申请日：2023-10-18
发明人： Yunyu TANG , Lei SHI , Yaojia ZHANG , Dong CHEN , Kai XIN
IPC分类号： H02M7/5387 , H02M1/00
CPC分类号： H02M7/53871 , H02M1/0054
摘要： This application describes examples of a grid-tied inverter apparatus and a grid-tied control method. In one example, the grid-tied inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of power switching transistors based on an output current value of the inverter apparatus, to adjust a resonance frequency of the filter circuit through different resonant branches, so that the resonance frequency meets a grid-tied requirement.
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公开(公告)号：US20240136948A1
公开(公告)日：2024-04-25
申请号：US18489576
申请日：2023-10-17
发明人： Yunyu TANG , Lei SHI , Yaojia ZHANG , Dong CHEN , Kai XIN
IPC分类号： H02M7/5387 , H02M1/00
CPC分类号： H02M7/53871 , H02M1/0054
摘要： This application describes examples of a grid-tied inverter apparatus and a grid-tied control method. In one example, the grid-tied inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of power switching transistors based on an output current value of the inverter apparatus, to adjust a resonance frequency of the filter circuit through different resonant branches, so that the resonance frequency meets a grid-tied requirement.
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