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51.发明授权公开(公告)号：US12132444B2
公开(公告)日：2024-10-29
申请号：US17883744
申请日：2022-08-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A photovoltaic system includes an inverter and a plurality of photovoltaic units connected to the inverter. Each photovoltaic unit includes a controller and one or more photovoltaic modules connected to the controller. The controller in each photovoltaic unit is further configured to obtain a power carrier signal sent by a controller in another photovoltaic unit of the plurality of photovoltaic units, determine an attenuation reference factor of the power carrier signal based on the obtained power carrier signal, and send the attenuation reference factor to the inverter. The inverter is further configured to group the plurality of photovoltaic units based on the attenuation degree of the power carrier signal obtained by each photovoltaic unit. This application can implement automatic grouping of photovoltaic units.
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公开(公告)号：US12126212B2
公开(公告)日：2024-10-22
申请号：US17562638
申请日：2021-12-27
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Chuntao Zhang
Abstract: A working method of a modular uninterruptible power supply (UPS) includes: obtaining working parameters of the modular UPS, where the working parameters include an input voltage parameter, a load parameter, and a battery parameter; and adjusting a working mode of a power module in the modular UPS according to at least one of the working parameters of the modular UPS, so that not all power modules are in a same working mode, where the modular UPS includes K working modules, and 2≤K.
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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
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yunyu TANG , Weixin FANG , Chao LIU , Lei SHI
CPC classification number: H01F27/306 , H01F27/02 , H01F27/24
Abstract: 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：US12120855B2
公开(公告)日：2024-10-15
申请号：US17964120
申请日：2022-10-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: H05K7/20
CPC classification number: H05K7/20745
Abstract: A cooling apparatus includes a housing, a cooling air duct, and an adsorption refrigeration unit. The housing includes a plurality of sidewalls, and the plurality of sidewalls form an inner cavity. The cooling air duct passes through the inner cavity. The adsorption refrigeration unit includes an adsorption bed, a flash evaporator, and an air cooler, the flash evaporator is connected to the air cooler, both the flash evaporator and the air cooler are disposed in the inner cavity, and the air cooler is located on a path of the cooling air duct. At least one of the plurality of sidewalls is a refrigeration sidewall, the refrigeration sidewall includes an internal wall plate and an external wall plate, the internal wall plate and the external wall plate are spaced apart and form sealed space, the sealed space is connected to the flash evaporator.
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公开(公告)号：US20240339914A1
公开(公告)日：2024-10-10
申请号：US18747832
申请日：2024-06-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Tianqi Hu , Hui Shi , Libin Hui , Chengfei Sun , Yufang Xiao
CPC classification number: H02M1/0009 , G01R31/52 , H02M7/003
Abstract: A photovoltaic inverter may include a magnetic ring, a leakage current detection winding, a modulation wave circuit, a filter circuit, and a first direct current power supply. The modulation wave circuit includes a first push-pull circuit, a comparator, a second direct current power supply, and a leakage current sampling resistor. The first push-pull circuit includes a first switching transistor and a second switching transistor. The first switching transistor is turned on when the comparator outputs a first level signal. The second switching transistor is turned on when the comparator outputs a second level signal. The comparator outputs a carrier signal. When the leakage current detection winding is in a charging saturation status, a level signal output by the comparator is inverted.
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Patent Agency Ranking
公开(公告)号：US12113421B2
公开(公告)日：2024-10-08
申请号：US17457390
申请日：2021-12-02
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: F16C19/06 , F16C35/077 , H02K5/173 , B60K1/00
CPC classification number: H02K5/1732 , F16C19/06 , F16C35/077 , B60K2001/001
Abstract: This application describes a motor that includes a housing, an output shaft, a conductive bearing, and a conductive component. The output shaft is disposed in the housing. A positioning hole is disposed on an end face of a first end of the output shaft, and the positioning hole is disposed coaxially with the output shaft. The conductive bearing is disposed in the positioning hole, and includes an inner ring, and an outer ring that is fixedly connected to the output shaft. One end of the conductive component is fixedly connected to the inner ring of the conductive bearing, and the other end is connected to the housing. In this application, the motor can output, by using the conductive bearing and the conductive component, charges accumulated in the output shaft, to eliminate a generated common-mode voltage.
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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
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Bin QIAN , Yunyu TANG , Yaojia ZHANG , Chao LIU
Abstract: 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：US20240332980A1
公开(公告)日：2024-10-03
申请号：US18739541
申请日：2024-06-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wenxue WU
CPC classification number: H02J3/381 , H02J3/32 , H02J7/35 , H02J2203/10 , H02J2207/20 , H02J2300/26
Abstract: A photovoltaic energy storage system includes a controller, at least one photovoltaic module, an inverter, an alternating current bus, an alternating current power distribution cabinet, a direct current bus, an alternating current-direct current circuit, a direct current-direct current circuit, and an energy storage device. An alternating current power grid is connected to the alternating current bus. The photovoltaic module is connected to the inverter. The inverter is connected to the alternating current bus. The alternating current power distribution cabinet is connected to the alternating current bus and the alternating current-direct current circuit. The alternating current-direct current circuit is connected to the direct current bus. The direct current bus is connected to direct current-direct current circuit. The direct current-direct current circuit is connected to the energy storage device.
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公开(公告)号：US12107538B2
公开(公告)日：2024-10-01
申请号：US18328902
申请日：2023-06-05
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ting Yu , Tiansan Lin , Jieling Tang
Abstract: The photovoltaic system includes a first inverter circuit, a second inverter circuit, and a switch circuit. When the switch circuit is in the first state, a first photovoltaic array is connected to the direct current positive bus and the neutral bus through the switch circuit, and a second photovoltaic array is connected to the neutral bus and the direct current negative bus through the switch circuit. When the switch circuit is in the second state, the first photovoltaic array is connected to the neutral bus and the direct current negative bus through the switch circuit, and the second photovoltaic array is connected to the direct current positive bus and the neutral bus through the switch circuit. A potential of the photovoltaic array is changed to prevent a PID effect from occurring when the photovoltaic array is at a negative potential for a long time.
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公开(公告)号：US12107496B2
公开(公告)日：2024-10-01
申请号：US17848155
申请日：2022-06-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Haitao Chen , Xingzhong Zhang
CPC classification number: H02M3/155 , H02J7/0016 , H02M3/01 , H02M3/07
Abstract: A converter circuit includes a capacitor module and a balance module. The capacitor module includes at least a first capacitor and a second capacitor. The balance module includes at least a first resonant circuit. The first resonant circuit includes at least two switch groups connected in parallel and a first resonant cavity bridged between the two switch groups. The first capacitor and the second capacitor are connected in series. The first resonant circuit is separately bridged between two ends of the first capacitor and between two ends of the second capacitor. The balance module controls each switch in the first resonant circuit, so that each switch works with the first resonant cavity to affect a current, to balance a voltage between the two ends of the first capacitor and a voltage between the two ends of the second capacitor.
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