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公开(公告)号：US20220029555A1
公开(公告)日：2022-01-27
申请号：US17495117
申请日：2021-10-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhaohui WANG , Lei SHI , Dong CHEN
IPC: H02M7/5387 , H02J3/38 , H02M1/14 , H02M1/12
Abstract: A power conversion circuit includes a switching network, a control circuit, a filter circuit, and a direct current side circuit; and the filter circuit includes a first power inductor, a common mode choke, a first differential mode filter capacitor, a first common mode filter capacitor, and a second common mode filter capacitor. The first power inductor includes a first winding and a second winding, and the common mode choke includes a third winding and a fourth winding; a first end of the first winding and a first end of the second winding are separately connected to the switching network, a second end of the first winding and a second end of the second winding are respectively connected to a first end of the third winding and a first end of the fourth winding.
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公开(公告)号：US20210376790A1
公开(公告)日：2021-12-02
申请号：US17404407
申请日：2021-08-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Dong CHEN , Lei SHI , Zhaohui WANG
Abstract: A photovoltaic power generation system includes a plurality of photovoltaic modules, a plurality of optimizers, and an inverter. Each optimizer is connected to at least one photovoltaic module, and output ends of the plurality of optimizers are connected in series to form a string and then connected to the inverter. The optimizer includes a conversion unit, and a control unit configured to control the conversion unit. The optimizer further includes an auxiliary power source, an energy storage unit, and a first unidirectional conduction unit that are connected between the conversion unit and the control unit. The control unit is configured to perform IV curve scanning for each voltage segment, where the voltage segments are obtained by segmenting a range of an output voltage of a photovoltaic module corresponding to the optimizer from an open-circuit voltage to a preset minimum voltage, and at least two voltage segments are obtained through division.
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公开(公告)号：US20180018363A1
公开(公告)日：2018-01-18
申请号：US15702001
申请日：2017-09-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xuelian LIN , Shuai MA , Lei SHI , Qi YU , Yanping JIANG , Mitch TSENG
CPC classification number: G06F16/2365 , G06F16/2379 , H04L67/12 , H04L67/125 , H04W4/70
Abstract: Embodiments of the present invention provide a time series data processing method and apparatus, where the method includes: first, receiving, by a common services entity CSE, a request message sent by an application entity AE, where the request message carries a first operation type and at least one piece of first time series data, or carries a second operation type and at least one filter criterion, the first operation type is an insert operation, a delete operation, or a query operation, and the second operation type is a delete operation or a query operation; and then, processing, by the common services entity CSE, a time series data set according to the request message, and sending a processing result to the application entity AE.
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公开(公告)号：US20210408909A1
公开(公告)日：2021-12-30
申请号：US17473511
申请日：2021-09-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongbing GAO , Jun WANG , Lei SHI
IPC: H02M3/158
Abstract: This application relates to the field of circuit technologies, and provides a step-up circuit and a step-up circuit control method. The step-up circuit includes a power supply, an inductor, N switch components, N-1 flying capacitors, N flyback diodes, a pre-charge unit, and an output unit. The N switch components are connected in series, a first switch component of the N switch components is connected to a first terminal of the power supply through the inductor, and an Nth switch component is connected to a second terminal of the power supply. At least two switch components of the N switch components have withstand voltage specifications different from each other. Values of voltages withstood by switch components with different withstand voltage specifications during normal operation are also different from each other. N is a positive integer.
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公开(公告)号：US20210050797A1
公开(公告)日：2021-02-18
申请号：US17088088
申请日：2020-11-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H02M7/487 , H02M7/5387 , G01R19/175 , H02M1/38
Abstract: Embodiments of the present application disclose a multi-level inverter clamping modulation method and apparatus, and an inverter. Switching elements of an inverter are controlled when an output voltage of the inverter crosses zero, and switching elements in each inverter bridge arm of an active clamp multi-level inverter include an internal tube, an external tube, and a clamping tube. The internal tube and the external tube are connected in series between a positive bus and a negative bus, the clamping tube is connected between a common terminal of the internal tube and the external tube and a bus, the internal tube is a low-frequency switching element, and the external tube and the clamping tube are high-frequency switching elements.
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Patent Agency Ranking
公开(公告)号：US20200373218A1
公开(公告)日：2020-11-26
申请号：US16993071
申请日：2020-08-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ye GUO , Lei SHI , Zhipeng ZHANG , Yonglan ZHANG , Yang CHEN , Yi FAN
IPC: H01L23/367 , H01L23/40 , H05K7/20
Abstract: A heat dissipation device includes a first radiator, a second radiator, and a first connecting device. The first radiator and second radiator are fastened onto a printed circuit board (PCB) by the first connecting device. The first radiator is over a first electronic device, and the second radiator is over a second electronic device. The first connecting device includes a first fixing pipe, a first fixing post and a first elastic element. The first radiator is fixed with the first fixing pipe, the first fixing post is sleeved in the first fixing pipe, an upper surface of the first fixing pipe abuts against a lower surface of a first convex portion of the first fixing post, a lower surface of the first fixing pipe abuts against an upper surface of the PCB, and the first fixing post extends through the second radiator and the first radiator from top to bottom.
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公开(公告)号：US20200321879A1
公开(公告)日：2020-10-08
申请号：US16911023
申请日：2020-06-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanzhong ZHANG , Zheng MA , Lei SHI , Dianbo FU
Abstract: A resonant converter includes: an input power supply, a bleeder circuit, a multi-level switching network, a resonant unit, and a transformer. The input power supply is connected to the bleeder circuit, the multi-level switching network is connected to the bleeder circuit, a clamping middle point of the multi-level switching network is connected to a middle point of the bleeder circuit; one end of the resonant unit is connected to the output terminal of the multi-level switching network, and the other end of the resonant unit is connected to one end of a primary side of the transformer; and the multi-level switching network instructs the output terminal of the multi-level switching network to output a square wave voltage with different amplitudes, to serve as an input voltage of the resonant unit, where the input voltage is used to adjust a gain of the resonant converter.
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公开(公告)号：US20200286681A1
公开(公告)日：2020-09-10
申请号：US16881366
申请日：2020-05-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lei SHI , Mingyu XUE , Fei YE , Jun ZHANG
Abstract: A current transformer (10) includes a magnetic core, a first primary-side winding, a second primary-side winding, and a first secondary-side winding. The magnetic core includes a first magnetic core structure, a second magnetic core structure, and a third magnetic core structure. The first magnetic core structure is connected to the second magnetic core structure to constitute a first closed magnetic circuit, the first magnetic core structure is connected to the third magnetic core structure to constitute a second closed magnetic circuit, and the first magnetic core structure is a magnetic core structure common to the first closed magnetic circuit and the second closed magnetic circuit.
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公开(公告)号：US20140079389A1
公开(公告)日：2014-03-20
申请号：US14087360
申请日：2013-11-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianrui HAN , Mingming XU , Lei SHI , Lin TAN
IPC: H04J14/02 , H04B10/079
CPC classification number: H04J14/0227 , H04B10/0793 , H04B10/07953 , H04J14/0221 , H04J14/0257 , H04J14/0269 , H04J14/0271 , H04L45/62
Abstract: Embodiments of the present invention disclose a path selecting method and apparatus. The method includes: computing an end-to-end path for a newly added service according to network topology and a wavelength constraint, and assigning a wavelength to the path; computing performance of each existing service and performance of the newly added service in a network according to physical impairment information collected in the network, where the physical impairment information includes a gain reference spectrum of each optical amplifier in the network; and performing impairment check on performance of each service, and performing path selection for the newly added service according to a result of the impairment check. The apparatus includes a path computation module, a performance computation module and an impairment check module. According to the embodiments, efficiency of network update or rerouting is improved.
Abstract translation: 本发明的实施例公开了路径选择方法和装置。 该方法包括：根据网络拓扑和波长约束计算新添加的业务的端到端路径，并向路径分配波长; 根据网络中收集的身体损伤信息，计算网络中新增服务的每个现有服务的性能和性能，其中身体损伤信息包括网络中每个光放大器的增益参考频谱; 对每个业务的性能进行减值检查，根据减值检查的结果对新增的业务进行路径选择。 该装置包括路径计算模块，性能计算模块和损伤检查模块。 根据实施例，提高了网络更新或重新路由的效率。
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公开(公告)号：US20220029522A1
公开(公告)日：2022-01-27
申请号：US17495112
申请日：2021-10-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Dong CHEN , Lei SHI , Zhaohui WANG
Abstract: A control circuit includes a detection module configured to detect an operating condition of a semiconductor switching device; a determining module configured to determine a gate allowable voltage of the semiconductor switching device based on the operating condition; and an output module configured to output a control signal to a driving power supply circuit of the semiconductor switching device based on the gate allowable voltage, to control the driving power supply circuit to provide a gate on voltage that is not higher than the gate allowable voltage and that is positively correlated with the gate allowable voltage for the semiconductor switching device. When the operating condition of the semiconductor switching device becomes better, the gate allowable voltage of the semiconductor switching device is increased.
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