-
公开(公告)号：US12009665B2
公开(公告)日：2024-06-11
申请号：US17825108
申请日：2022-05-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaofeng Yao , Yanzhong Zhang , Guilei Gu
CPC classification number: H02J3/381 , H02S40/30 , H02J2300/24 , Y02E10/56
Abstract: A photovoltaic system, an optimizer, a controller, a computer program product, a computer-readable storage medium, a chip, and a method for adjusting a working state of an optimizer are provided. The photovoltaic system includes a photovoltaic panel and an optimizer. The optimizer includes a controller, a first output port, and a second output port. The controller is configured to detect an electrical signal parameter between the first output port and the second output port. The controller is configured to adjust a working state of the optimizer from a no-output state or a limited-output state to an unlimited-output state when the electrical signal parameter changes. In the photovoltaic system, the working state can be adjusted without using an unlocking apparatus, so that an implementation is simple, and costs are reduced.
-
公开(公告)号：US20240063754A1
公开(公告)日：2024-02-22
申请号：US18496226
申请日：2023-10-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhen Cao , Dong Chen , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
Abstract: This application provides a power converter box used in a photovoltaic system. The power converter box includes at least two power converters, and the at least two power converters include one primary power converter and at least one secondary power converter. The primary power converter obtains status information of a photovoltaic substring corresponding to a secondary power converter, and sends, to an inverter by using a PLC communication module in the primary power converter, the status information of the photovoltaic substring corresponding to the secondary power converter and status information of a photovoltaic substring corresponding to the primary power converter. The primary power converter further receives, by using the PLC communication module in the primary power converter, control information sent by the inverter, controls, based on the control information, an output power of the photovoltaic substring corresponding to the primary power converter.
-
公开(公告)号：US20230115497A1
公开(公告)日：2023-04-13
申请号：US17964128
申请日：2022-10-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Zhen Cao , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
IPC: H02J3/38 , H02M1/32 , H02M1/36 , H02M3/158 , H03K17/082
Abstract: A power converter analog chip includes a sampling circuit configured to collect electrical parameters of the power converter; a maximum power point tracking circuit configured to perform maximum power point tracking based on the input power or the output power obtained by the electrical parameters, and to obtain an adjustment signal; a rapid shutdown circuit configured to, when receiving a rapid shutdown instruction sent from the outside of the analog chip, generate a rapid shutdown signal; a protection circuit, configured to, when an electrical parameter of the power converter exceeds a first preset threshold, generate a protection signal and send the protection signal to the multiplexer; and a multiplexer configured to select one of the rapid shutdown signal, the protection signal, or the adjustment signal as a control signal, to control a power component in the power converter.
-
公开(公告)号：US11862981B2
公开(公告)日：2024-01-02
申请号：US17851374
申请日：2022-06-28
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Guilei Gu , Peixian Jia
CPC classification number: H02J3/381 , H02J3/46 , H02J2300/26
Abstract: A photovoltaic system includes an inverter, a controller, and at least two converters. An input terminal of each of the at least two converters are connected to a corresponding photovoltaic module, and output terminals of the at least two converters are connected in series and connected to an input terminal of the inverter. The controller is configured to set a voltage limiting value of at least one of the at least two converters, so that an output voltage of the at least one converter is less than or equal to the voltage limiting value when the converter works in a voltage limiting mode. The voltage limiting value of the at least one converter is proportional to an open circuit voltage of the photovoltaic module connected to an input terminal of the converter. Open circuit voltages of different photovoltaic modules vary with different parameters or models of the photovoltaic modules.
-
公开(公告)号：US11824493B2
公开(公告)日：2023-11-21
申请号：US17826475
申请日：2022-05-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A power converter box and at least one junction box are integrated on a backplane of the photovoltaic module as a whole, and there is a cable for connecting the power converter and the junction box. In this case, relative to the conventional technology in which a junction box is independent of a power converter, a length of a cable used when the junction box and the power converter box are taken as a whole is shorter than a length of a cable used in the conventional technology. In this case, compared with the conventional technology in which a cable is connected to an independently placed power converter, the power converter only needs to establish a connection relationship by using a solder ribbon, a circuit board cable, and the like with low costs, so that production costs are low.
-
Patent Agency Ranking
公开(公告)号：US11632077B2
公开(公告)日：2023-04-18
申请号：US17088023
申请日：2020-11-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: Embodiments of this application disclose a fault point position determining method and apparatus and a photovoltaic system, to correctly and efficiently determine a fault point position when a disconnection fault occurs in a photovoltaic system. The method is applied to a photovoltaic system, the photovoltaic system includes at least one inverter and at least one photovoltaic unit, each photovoltaic unit includes at least one photovoltaic module and one photovoltaic module controller, and the method includes: sending, by an inverter, a first test signal to the at least one photovoltaic unit; obtaining, by the inverter, first test signal characteristic information fed back by the at least one photovoltaic unit; and performing, by the inverter, absolute value or relative value sorting on the at least one piece of first test signal characteristic information, and determining a fault point in the photovoltaic system based on a sorting result.
-
公开(公告)号：US11527892B2
公开(公告)日：2022-12-13
申请号：US16748071
申请日：2020-01-21
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yongbing Gao , Guilei Gu
Abstract: Embodiments of this application disclose a control method for a photovoltaic power generation system and a photovoltaic power generation system, to reduce a photovoltaic energy loss. The method includes: presetting, by the photovoltaic power generation system, an upper limit value for each converter in the photovoltaic power generation system, where the upper limit value is a maximum voltage value of an output voltage to ground of the converter, and the output voltage to ground is a voltage difference between a positive output end of the converter and a ground point of the photovoltaic power generation system; and limiting, by the photovoltaic power generation system, an output voltage to ground of a target converter based on an upper limit value corresponding to the target converter, where the target converter may be any converter in the photovoltaic power generation system.
-
公开(公告)号：US12107534B2
公开(公告)日：2024-10-01
申请号：US17994632
申请日：2022-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhiwu Xu , Guilei Gu , Xiaofeng Yao
CPC classification number: H02S40/32 , G05F1/67 , H02J1/14 , H02J7/35 , H02J2300/26
Abstract: A photovoltaic system includes at least one DC/DC converter and the inverter. An input terminal of the at least one DC/DC converter is configured to connect to a photovoltaic module, an output terminal is configured to connect to an input terminal of the inverter by using a direct current bus, and an output terminal of the inverter is connected to an alternating current grid. When the inverter is switched from a non-power-limited working state to a power-limited working state, the inverter adjusts a bus voltage of the inverter to rise from a first voltage to a second voltage. After running in the power-limited working state for a time interval, the inverter adjusts the bus voltage to drop from the second voltage to a third voltage, where the third voltage is less than or equal to the first voltage.
-
公开(公告)号：US11994893B2
公开(公告)日：2024-05-28
申请号：US17696596
申请日：2022-03-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: This application relates to a converter in a photovoltaic power generation system and a converter control method. An input end of the converter is connected to at least one photovoltaic module, and an output end is connected to an inverter. The control method includes: determining an output power-voltage (PV) curve of a converter based on an output PV curve of the photovoltaic module; and controlling a voltage output of the converter based on the output PV curve of the converter. The output PV curve includes at least a simulated voltage limiting section and a constant power section that are connected. In this application, an existing MPPT control policy of the inverter can be adapted when a voltage-limited output is implemented, to avoid a case in which a power of a photovoltaic string drops to zero.
-
10.发明授权公开(公告)号：US11799418B2
公开(公告)日：2023-10-24
申请号：US17446853
申请日：2021-09-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Guilei Gu
IPC: H02S40/34 , G06V30/422 , H01L31/05 , G06F30/13 , H01G9/20 , G06F111/20
CPC classification number: H02S40/34 , G06F30/13 , G06V30/422 , H01G9/2068 , H01L31/0504 , G06F2111/20
Abstract: This application discloses a method, an apparatus, and a system for obtaining electronic layout applied to photovoltaic array in the field of equipment installation management. According to the method, the electronic device identifies each first area in a target picture to obtain position information and a module identifier of at least one photovoltaic module in each first area, and may directly obtain an electronic layout based on the position information and the module identifier of each photovoltaic module. In this way, a product identifier of each converter does not need to be manually obtained, and a photovoltaic module does not need to be manually added to the electronic layout. This reduces labor time consumption and improves efficiency of obtaining the electronic layout.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.018 seconds)
