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公开(公告)号：US20220271712A1
公开(公告)日：2022-08-25
申请号：US17673140
申请日：2022-02-16
发明人： Yongbing GAO , Yunyu TANG , Lei SHI
摘要： A fault detection apparatus includes a temperature detection unit, a current detection unit, a controller, and a breaking unit. The temperature detection unit is configured to detect temperatures of the plurality of filter capacitors and output the temperatures to the controller. The current detection unit is coupled to the plurality of filter capacitors and is configured to detect currents of the plurality of filter capacitors and output the currents to the controller. The controller is separately connected to the temperature detection unit, the current detection unit, and the breaking unit, and is configured to: when the received temperature exceeds a first threshold and the received current exceeds a second threshold, control the breaking unit to be disconnected. The breaking unit is connected between the output end of the grid-tied inverter and the plurality of filter capacitors and is configured to be disconnected or connected under control of the controller.
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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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公开(公告)号：US20240347263A1
公开(公告)日：2024-10-17
申请号：US18750996
申请日：2024-06-21
发明人： Yunyu TANG , Weixin FANG , Chao LIU , Lei SHI
CPC分类号： H01F27/306 , H01F27/02 , H01F27/24
摘要： Embodiments of this application provide a magnetic element, an inductor, an inductor assembly, and an electronic device. The magnetic element includes a top plate, a bottom plate, a side plate, and a winding structure. The top plate and the bottom plate are disposed opposite to each other at an interval in a first direction. The winding structure is connected between the top plate and the bottom plate, and is configured to wind a winding. The side plate and the winding structure are disposed at an interval in a second direction. The side plate, the top plate, the winding structure, and the bottom plate jointly form a carrier of a magnetic flux loop. The side plate includes a plurality of strip structures that are stacked. A stacking direction of the plurality of strip structures is a third direction.
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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：US20240145426A1
公开(公告)日：2024-05-02
申请号：US18489284
申请日：2023-10-18
发明人： Fenglong LU , Dong CHEN , Lei SHI , Yunyu TANG , Yunfeng LIU
IPC分类号： H01L23/00
CPC分类号： H01L24/49 , H01L24/45 , H01L24/48 , H01L2224/45124 , H01L2224/45144 , H01L2224/45147 , H01L2224/48091 , H01L2224/48137 , H01L2224/48155 , H01L2224/4917 , H01L2924/13013 , H01L2924/13055
摘要： A bonding structure and a power device. The bonding structure includes a first power unit and at least two bonding wires. At least one end of the bonding wire is connected to the first power unit through bonding. Projections that are of lead paths of the at least two bonding wires and that are on a preset plane have at least one intersection point. Spatial cross wire bonding is performed on the bonding wires, so that lead paths of the bonding wires form an angle with each other, thereby weakening electromagnetic force between the bonding wires. Therefore, fatigue due to fluctuating stress of the bonding wires can be alleviated, service lives of the bonding wires can be prolonged, and bonding effect can be ensured to a maximum extent.
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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：US20230208312A1
公开(公告)日：2023-06-29
申请号：US18175583
申请日：2023-02-28
发明人： Yongbing GAO , Yunyu TANG , Lei SHI
CPC分类号： H02M7/48 , H02J3/381 , H02M1/32 , H02M1/083 , H02M3/04 , H02S40/32 , H02S40/36 , H02J2300/24
摘要： A converter includes a power conversion circuit, a switching device, and a controller, and includes N phases, where N is 2 or 3. An input end of the power conversion circuit is connected to a direct current power supply, and the power conversion circuit converts a direct current output by the direct current power supply into an alternating current. The switching device includes at least the following two stages: a first-stage switching device and a second-stage switching device. The first-stage switching device and the second-stage switching device separately include N switches, and the N switches are connected in series to the N phases respectively. An output end of the power conversion circuit is connected to an alternating current power grid through the first-stage switching device and the second-stage switching device that are connected in series.
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公开(公告)号：US20230014195A1
公开(公告)日：2023-01-19
申请号：US17955031
申请日：2022-09-28
发明人： He ZHOU , Yunyu TANG , Lei SHI
摘要： An inductor (100) is provided, and includes an inductor winding (10), a housing (20), and a thermally conductive packaging material (30). The inductor winding is disposed in the housing. The thermally conductive packaging material is potted in the housing to fill a gap between the inductor winding and the housing. The thermally conductive packaging material includes a first packaging layer (31) and a second packaging layer (32), and a coefficient of thermal conductivity of the first packaging layer is greater than a coefficient of thermal conductivity of the second packaging layer. The housing includes a heat dissipation wall (21) and a packaging wall (22), and the first packaging layer is closer to the heat dissipation wall than the second packaging layer. Heat generated by the inductor can be dissipated after being transmitted to each surface of the housing through the thermally conductive packaging material.
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