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公开(公告)号：US11336094B2
公开(公告)日：2022-05-17
申请号：US17081076
申请日：2020-10-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Rongliang Shi , Zhangping Shao , Kai Xin
Abstract: An inverter includes an inverter circuit; an alternating current filter, where an input port of the alternating current filter is connected to an output port of the inverter circuit; an alternating current electromagnetic interference (EMI) filter; and a first alternating current switch, connected between an output port of the alternating current filter and an input port of the alternating current EMI filter. The first split capacitor is disposed between the first alternating current switch and the input port of the alternating current EMI filter; and when the first alternating current switch is turned off, the first split capacitor is disconnected from the output port of the alternating current filter, and the first split capacitor is connected to a circuit in which an alternating current system connected to the output port of the alternating current EMI filter is located, to suppress harmonic distortion of the alternating current system.
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2.发明授权公开(公告)号：US11146181B2
公开(公告)日：2021-10-12
申请号：US16911600
申请日：2020-06-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fangcheng Liu , Kai Xin , Yunfeng Liu
Abstract: A control method and apparatus for a single-phase five-level converter are provided. The method includes: obtaining a first-phase initial modulated wave and a second-phase initial modulated wave of the single-phase five-level converter; obtaining a first-level modulated wave, a second-level modulated wave, a third-level modulated wave, a fourth-level modulated wave, and a fifth-level modulated wave that are output by the single-phase five-level converter; calculating the first-level modulated wave, the second-level modulated wave, the third-level modulated wave, the fourth-level modulated wave, the fifth-level modulated wave, the first-phase initial modulated wave, and the second-phase initial modulated wave, to obtain a common-mode modulated wave of the single-phase five-level converter; and calculating the first-phase initial modulated wave, the second-phase initial modulated wave, and the common-mode modulated wave, to obtain a pulse-width modulated wave of the single-phase five-level converter. Implementing the embodiments of this application can increase a system response speed and improve system reliability.
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公开(公告)号：US20180120368A1
公开(公告)日：2018-05-03
申请号：US15855396
申请日：2017-12-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fangcheng Liu , Kai Xin
CPC classification number: G01R31/086 , G01R27/16 , G01R27/26 , H02H1/0007 , H02H1/0092 , H02H7/1227 , H02J3/38 , H02M1/084 , H02M7/42 , H02M7/53875 , H02M2001/0009
Abstract: The present disclosure relates to the field of inverters, and to a method for detecting grid connection stability of an inverter and an inverter. The method includes: detecting a line voltage and a current of the alternating current port to obtain a first group of line voltage values and a first group of current values; detecting the line voltage and the current of the alternating current port to obtain a second group of line voltage values and a second group of current values; obtaining an equivalent impedance matrix of the power grid according to the first group of line voltage values, the first group of current values, the second group of line voltage values, and the second group of current values; and determining, by the inverter according to an equivalent admittance matrix and the equivalent impedance matrix, whether a stability requirement of the inverter is met.
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公开(公告)号：US09871466B2
公开(公告)日：2018-01-16
申请号：US14747744
申请日：2015-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haibin Guo , Kai Xin , Li Lu
IPC: H02M7/537 , H02M7/5387 , H02M7/5395 , H02M1/00
CPC classification number: H02M7/537 , H02M7/53871 , H02M7/5395 , H02M2001/0032 , H02M2001/0054 , Y02B70/1491 , Y02B70/16
Abstract: An inverter control method, apparatus, and system are provided. The method in the embodiments of the present invention includes obtaining power distribution line graph of an inverter switch according to an output power and an input voltage that are of an inverter; when an area to which the inverter belongs is a first area and the inverter switch works at a second frequency, switching the inverter switch to a first frequency; and when the area to which the inverter belongs is a second area and the inverter switch works at the first frequency, switching the inverter switch to the second frequency. In the embodiments of the present invention, whether a working frequency of an inverter switch needs to be changed is determined according to an output power and an input voltage, which improves control efficiency, thereby effectively improving conversion efficiency of an inverter.
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公开(公告)号：US11961923B2
公开(公告)日：2024-04-16
申请号：US17725310
申请日：2022-04-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shuo Wang , Kai Xin , Yunfeng Liu
IPC: H01L31/0224 , H01L31/046 , H01L31/054
CPC classification number: H01L31/022425 , H01L31/022466 , H01L31/046 , H01L31/0543
Abstract: A solar cell is provided, including a front electrode, a functional layer, and a back electrode. The front electrode is an electrode on a side of an illuminated surface. The front electrode includes a high-conductivity region and a low-conductivity region that are adjacent to each other, or the back electrode includes a high-conductivity region and a low-conductivity region that are adjacent to each other. The front electrode and/or the back electrode may be designed to be separated by region, and conductivity of one conductive region is designed to be higher than conductivity of the other conductive region. According to the application, a film rectangular resistance loss caused by large-scale non-uniform lateral transfer of a photocurrent is avoided, thereby improving photoelectric conversion efficiency of the cell, and improving the cell comprehensive performance by flexibly selecting materials based on different requirements of different regions in different application scenarios.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11563404B2
公开(公告)日：2023-01-24
申请号：US17035142
申请日：2020-09-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fangcheng Liu , Kai Xin , Xinyu Yu
Abstract: One example method includes obtaining output powers at initial scanning points of photovoltaic strings in a first group and a second group. The output powers at the initial scan points of the photovoltaic strings in the first group can then be controlled to sequentially decrease, and the output powers at the initial scan points of the photovoltaic strings in the second group can then be controlled to sequentially increase. Scanning can then be performed in the initial scanning direction starting from output voltages corresponding to the output powers at the initial scan points of the first group. Scanning can then be performed in the initial scanning direction starting from output voltages corresponding to the output powers at the initial scan points of the second group, where output powers of the first group and the second group are kept to compensate each other during IV curve scanning.
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公开(公告)号：US10776176B2
公开(公告)日：2020-09-15
申请号：US16054605
申请日：2018-08-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaosheng Zeng , Kai Xin , Xiaowen Dong
Abstract: A service control method and a service control apparatus, where the method includes obtaining, a current electricity grid electricity price and a quantity of to-be-executed services, determining an electricity price threshold according to the quantity of the to-be-executed services, decreasing, by the service control apparatus, a quantity of services that are about to be executed by a first quantity when the current electricity grid electricity price is greater than the electricity price threshold, and executing a service according to a reduced quantity of services that are about to be executed, or increasing, by the service control apparatus, a quantity of services that are about to be executed by a second quantity, and executing a service according to an increased quantity of services that are about to be executed when the current electricity grid electricity price is less than the electricity price threshold.
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公开(公告)号：US20180342870A1
公开(公告)日：2018-11-29
申请号：US16054605
申请日：2018-08-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaosheng Zeng , Kai Xin , Xiaowen Dong
IPC: H02J3/14
Abstract: A service control method and a service control apparatus, where the method includes obtaining, a current electricity grid electricity price and a quantity of to-be-executed services, determining an electricity price threshold according to the quantity of the to-be-executed services, decreasing, by the service control apparatus, a quantity of services that are about to be executed by a first quantity when the current electricity grid electricity price is greater than the electricity price threshold, and executing a service according to a reduced quantity of services that are about to be executed, or increasing, by the service control apparatus, a quantity of services that are about to be executed by a second quantity, and executing a service according to an increased quantity of services that are about to be executed when the current electricity grid electricity price is less than the electricity price threshold.
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9.发明授权公开(公告)号：US11818903B2
公开(公告)日：2023-11-14
申请号：US17824409
申请日：2022-05-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H01L31/044 , H10K30/82 , H10K30/00 , H10K30/57
CPC classification number: H10K30/82 , H10K30/451 , H10K30/57
Abstract: This application provides a solar cell, a method for preparing the solar cell, smart glasses, and an electronic device. The solar cell includes a first conductive layer, a second conductive layer, a first conductive lattice, a second conductive layer, and a functional layer. The functional layer is disposed between the first conductive layer and the second conductive layer, the functional layer is configured to absorb light and generate a photocurrent, and both the first conductive layer and the second conductive layer are configured to receive the photocurrent. The first conductive lattice is in contact with a surface that is of the first conductive layer. The second conductive lattice is in contact with the second conductive layer, and the first conductive lattice and the second conductive lattice are configured to output the photocurrent to the target device. This application can mitigate impact of a sheet resistance on cell efficiency.
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10.发明申请公开(公告)号：US20220384751A1
公开(公告)日：2022-12-01
申请号：US17824409
申请日：2022-05-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: This application provides a solar cell, a method for preparing the solar cell, smart glasses, and an electronic device. The solar cell includes a first conductive layer, a second conductive layer, a first conductive lattice, a second conductive layer, and a functional layer. The functional layer is disposed between the first conductive layer and the second conductive layer, the functional layer is configured to absorb light and generate a photocurrent, and both the first conductive layer and the second conductive layer are configured to receive the photocurrent. The first conductive lattice is in contact with a surface that is of the first conductive layer. The second conductive lattice is in contact with the second conductive layer, and the first conductive lattice and the second conductive lattice are configured to output the photocurrent to the target device. This application can mitigate impact of a sheet resistance on cell efficiency.
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