-
公开(公告)号：US20250118956A1
公开(公告)日：2025-04-10
申请号：US18982866
申请日：2024-12-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiufeng Zhang , Yanzhong Zhang
Abstract: A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic inverter is faulty.
-
公开(公告)号：US12206232B2
公开(公告)日：2025-01-21
申请号：US18521816
申请日：2023-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiufeng Zhang , Yanzhong Zhang
Abstract: A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic power generation system is faulty.
-
公开(公告)号：US12136900B2
公开(公告)日：2024-11-05
申请号：US17669724
申请日：2022-02-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianqiang Wang , Song Wan , Yanzhong Zhang , Yongbing Gao
Abstract: A method and an apparatus for detecting a solar cell of a photovoltaic plant. The method includes: obtaining a first infrared image and a second infrared image, where the first infrared image includes infrared image information corresponding to an ambient infrared signal reflected by a to-be-detected solar cell operating in a short-circuit state, the second infrared image includes infrared image information corresponding to an infrared signal emitted by the to-be-detected solar cell operating in a first state and infrared image information corresponding to an ambient infrared signal reflected by the to-be-detected solar cell, and the first state is another state other than the short-circuit state; and detecting, based on the first infrared image and the second infrared image, whether the to-be-detected solar cell has a defect.
-
公开(公告)号：US20230391218A1
公开(公告)日：2023-12-07
申请号：US18168529
申请日：2023-02-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xiaofeng Yao , Haibin Hu
CPC classification number: B60L53/51 , H02J7/35 , H02J7/00712 , H02J3/38 , H02J2207/20 , H02J2300/24 , B60L2210/40 , B60L2210/14
Abstract: This application provides a charging module and a charging system. The charging system includes a charging module. The charging module includes a direct current-to-direct current (DC/DC) charging component, a functional interface, an inverter, and a control and guide component. The functional interface includes a photovoltaic interface. The DC/DC charging component is configured to receive a first power exported by a photovoltaic module to charge an electric vehicle (EV). In this way, after receiving, through the photovoltaic interface, electrical energy converted from solar energy, the charging module does not need to cooperate with an on-board charger (OBC), but uses the DC/DC charging component to charge the EV with a direct current. The charging module provided in this application is not limited by a charging power of the OBC when charging the EV, thereby increasing an actual power for charging the EV and a charging speed.
-
5.发明公开公开(公告)号：US20230231518A1
公开(公告)日：2023-07-20
申请号：US18186022
申请日：2023-03-17
Applicant: Huawei Digital Power Technologies Co., Ltd. , SPIC Qinghai Photovoltaic Industry Innovation Center Co.,Ltd.
Inventor： Jianqiang Wang , Yuandong Meng , Song Wan , Yanzhong Zhang , Feng Chong , Hualong Fan , Jiajia He , Shaopan Hou , Jie Zhang
IPC: H02S50/15
CPC classification number: H02S50/15
Abstract: A method and an apparatus (400) for performing fault detection, are provided includes: controlling, by a power station management system in a preset photovoltaic module order by using an inverter connected to a current to-be-detected photovoltaic module, the current to-be-detected photovoltaic module to be in a target status, and when determining that the current to-be-detected photovoltaic module is in the target status, controlling a mobile image capturing terminal to collect image data of the current to-be-detected photovoltaic module (S201), where the image data is used to detect a fault status of the current to-be-detected photovoltaic module; and when determining that the mobile image capturing terminal obtains the image data of the current to-be-detected photovoltaic module through collection, continuing, by the power station management system, to control, in the preset photovoltaic module order by using an inverter connected to a next to-be-detected photovoltaic module.
-
Patent Agency Ranking
公开(公告)号：US11438026B2
公开(公告)日：2022-09-06
申请号：US17137915
申请日：2020-12-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yongbing Gao , Yanzhong Zhang , Tiansan Lin , Wei Shui , Chen Wang
Abstract: An inverter in a power generation system converts a direct current that is input from a direct-current-side device into an alternating current for power supply. The inverter includes a control apparatus and a communications apparatus. The control apparatus controls the inverter to convert the direct current that is input from the direct-current-side device into an alternating current for power supply. The communications apparatus is coupled to the control apparatus, and sends a networking information request signal used to request networking information to the direct-current-side device in the power generation system through a direct-current power line, where a frequency of the networking information request signal is within a first frequency band. The communications apparatus also receives the networking information from the direct-current-side device; and sends a control signal to the direct-current-side device, where a frequency of the control signal is within a second frequency band.
-
公开(公告)号：US12199566B2
公开(公告)日：2025-01-14
申请号：US17896730
申请日：2022-08-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Song Wan , Yongbing Gao , Xun Wang , Yanzhong Zhang , Zhipeng Wu
Abstract: A linkage protection system includes an inverter, an anti-potential-induced degradation (PID) apparatus, and an insulation-monitoring apparatus. The anti-PID apparatus is configured to inject a voltage into an input end or an output end of the inverter, to increase or decrease a voltage-to-earth of a photovoltaic system. The insulation-monitoring apparatus is configured to inject an insulation-monitoring voltage into a direct current (DC) side or an alternating current (AC) side of the inverter. The anti-PID apparatus and the insulation-monitoring apparatus directly or indirectly communicate with each other, to learn of information about whether a peer apparatus is operating, and perform linkage control. The anti-PID apparatus and the insulation-monitoring apparatus operate in different time periods.
-
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：US12003130B2
公开(公告)日：2024-06-04
申请号：US17693092
申请日：2022-03-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： He Zhou , Zhaohui Wang , Xun Wang , Yanzhong Zhang
CPC classification number: H02J7/00712 , H02J7/0013 , H02J7/0048 , H02J7/005 , H02J7/00714 , H02M3/04 , H02M7/44 , H02S40/38
Abstract: An energy storage system includes one or more energy storage unit clusters, and the energy storage unit cluster includes at least two energy storage modules connected in series. The energy storage system further includes a first bus, a second bus, and a centralized monitoring system of the energy storage unit cluster, where the second bus is a direct current bus. The energy storage unit cluster is coupled to the first bus by using a first converter. One energy storage module includes one energy storage element group and one DC/DC converter, and the energy storage element group is coupled to the second bus by using the DC/DC converter. The centralized monitoring system is connected to the energy storage unit cluster through a control bus, and is configured to control a DC/DC converter in any energy storage module in the energy storage unit cluster.
-
公开(公告)号：US20240146069A1
公开(公告)日：2024-05-02
申请号：US18410092
申请日：2024-01-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Song Wan , Hongmiao Fang
CPC classification number: H02J3/388 , H02J3/0012 , H02J3/381 , H02J2300/24
Abstract: A power supply system includes at least one group of power supply modules. The power supply module includes a first string, a first residual current detection circuit, an inverter circuit, and a first controller. The first residual current detection circuit is connected between the first string and an input end of the inverter circuit, and an output end of the inverter circuit is connected to an alternating current power grid. When a first residual current value detected by the first residual current detection circuit is greater than a first preset residual current threshold, the first controller controls the first string to be disconnected from the inverter circuit, or controls the inverter circuit to be disconnected from the alternating current power grid.
-
-
-
-
-
-
-
-
-
Search Results
38
records
(took 0.021 seconds)
