-
11.发明公开公开(公告)号：US20230420956A1
公开(公告)日：2023-12-28
申请号：US18464909
申请日：2023-09-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhipeng Wu , Lin Li , He Zhou , Yanzhong Zhang , Jie Kong
CPC classification number: H02J7/0016 , H02J7/0019 , H02J3/32 , H02J3/38 , H02J7/00712 , H02J2207/20 , H02J2300/24
Abstract: An energy storage system includes a battery cluster, a direct current converter, a controller, and at least one power conversion system. The energy storage system includes at least one direct current branch. The direct current branch includes a battery cluster and a direct current converter that are connected to each other. The direct current converter performs direct current conversion on a direct current provided by the battery cluster. Each battery cluster includes at least two energy storage modules that are connected in series. The controller controls the first equalization circuit, to balance electricity quantities of battery modules in the battery cluster, and allocates operating power to the power conversion system and the direct current converter. In this solution, impact of bucket effect on the energy storage system is reduced, so that a battery capacity can be more fully utilized.
-
12.发明授权公开(公告)号：US12003096B2
公开(公告)日：2024-06-04
申请号：US17875823
申请日：2022-07-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiufeng Zhang , Yanzhong Zhang
CPC classification number: H02H7/268 , H02J3/381 , H02S40/34 , H02J2300/26
Abstract: A photovoltaic power generation system includes a protection switch and a plurality of DC-DC converters. Each DC-DC converter includes a direct current bus, a DC-DC circuit, and at least one input interface. The input interface is configured to connect to a photovoltaic unit. The photovoltaic unit includes at least one photovoltaic module. The input interface is connected to the direct current bus by using the protection switch, the direct current bus is connected to an input end of the DC-DC circuit, and an output end of the DC-DC circuit is an output end of the DC-DC converter. The protection switch includes a release device and a switching device that are connected in series. The release device is configured to: when a short-circuit fault occurs on a line in which the release device is located, control the switching device to be disconnected.
-
公开(公告)号：US20230327453A1
公开(公告)日：2023-10-12
申请号：US18334653
申请日：2023-06-14
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xinyu Yu , Kai Xin , Yanzhong Zhang , Yongbing Gao
IPC: H02J3/38
CPC classification number: H02J3/38 , H02J2300/24
Abstract: A photovoltaic system includes a controller and two groups of inverters. The two groups of inverters include a positive inverter group and a negative inverter group. The positive inverter group includes at least two inverters: a first inverter and a third inverter. The negative inverter group includes at least two inverters: a second inverter and a fourth inverter. Alternating current output ends of the first inverter and the third inverter are connected in parallel. Direct current input ends of the first inverter and the second inverter are connected in series. Alternating current output ends of the second inverter and the fourth inverter are connected in parallel. Direct current input ends of the third inverter and the fourth inverter are connected in series.
-
公开(公告)号：US20230170842A1
公开(公告)日：2023-06-01
申请号：US18160163
申请日：2023-01-26
Applicant: Huawei Digital Power Technologies Co, Ltd.
Inventor： Song Wan , Qinwei Liu , Wuben Sun , Yanzhong Zhang , Kai Liu
IPC: H02S20/32 , H02S40/12 , H02S40/30 , G06V10/764 , G06V10/774
CPC classification number: H02S20/32 , H02S40/12 , H02S40/30 , G06V10/764 , G06V10/774
Abstract: An image/video capture apparatus is provided, to capture image data of a photovoltaic panel (101) and surroundings, and a controller (502) recognizes a category corresponding to the image data, and generates different instructions to control rotation of a photovoltaic tracker (102), to remove dust or snow accumulating on the photovoltaic panel (101). This does not need continuous heating, but is simple and efficient, saves electric energy, and resolves a technical problem that a conventional snow removal method of heating has low efficiency and wastes electric energy. In addition, a corresponding controller (1200) is further provided.
-
公开(公告)号：US11637431B2
公开(公告)日：2023-04-25
申请号：US17360245
申请日：2021-06-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xun Wang
Abstract: An inverter includes a direct-current conversion unit, a busbar unit, and an inversion unit. The direct-current conversion unit includes a first positive input terminal, a first negative input terminal, a second positive input terminal, a second negative input terminal, a first direct current DC-to-DC module, a second DC-to-DC module, a first on/off control device, a second on/off control device, a first switch, and a second switch. The first positive input terminal and the first negative input terminal are configured to connect a first photovoltaic string, the second positive input terminal and the second negative input terminal are configured to connect a second photovoltaic string, and a connection relationship of a circuit in the direct-current conversion unit can be changed based on combinations of turning-on or turning-off of the first switch and the second switch.
-
Patent Agency Ranking
公开(公告)号：US11626738B2
公开(公告)日：2023-04-11
申请号：US17353925
申请日：2021-06-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Zhenhuan Shu , Xun Wang
IPC: H02J3/38
Abstract: This application relates to the field of power technologies, and provides a photovoltaic system, which can increase a working voltage of a photovoltaic string. The photovoltaic system includes an adapter circuit, a first photovoltaic string, a second photovoltaic string, and a controller. The controller includes an inverter or a combiner box. The first photovoltaic string and the second photovoltaic string are configured to provide electric energy for the controller. The adapter circuit is configured to be connected to the first photovoltaic string in series, and further configured to connect the second photovoltaic string to the first photovoltaic string in series when a voltage of the first photovoltaic string is lower than a preset threshold.
-
公开(公告)号：US12136871B2
公开(公告)日：2024-11-05
申请号：US18150999
申请日：2023-01-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xun Wang
Abstract: An energy combiner apparatus is used to convert output of a power supply, and has three output terminals, so that output ports are increased. In the three output terminals of the energy combiner apparatus, a voltage of 1500 V is output between a first output terminal and a second output terminal, a voltage of 1500 V is also output between the second output terminal and a third output terminal, and a total of 3 kV is output. Therefore, an overall output voltage is increased in a case of equal output power. Because the overall output voltage is increased, a current transmitted on a cable may be reduced. Therefore, a thinner cable may be used, so that costs of the cable are reduced. In addition, four cables conventionally required for connecting to the output terminals of the energy combiner apparatus are reduced to three, so that quantity and costs are reduced.
-
公开(公告)号：US12074444B2
公开(公告)日：2024-08-27
申请号：US17694085
申请日：2022-03-14
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Yongbing Gao , Xun Wang , Roland Huempfner
CPC classification number: H02J3/381 , H02M7/44 , H02J2300/24
Abstract: A power system is disclosed. Output terminals of a power supply or a DC-to-DC unit are cascaded to increase an output voltage, so as to reduce a current between the power supply or the DC-to-DC unit and the DC-to-AC unit, and resolve cost and loss problems of the cable from the power supply or the DC-to-DC unit to the DC-to-AC unit. In addition, according to the power system provided in the embodiments of this application, a quantity of cables from the power supply or the DC-to-DC unit to the DC-to-AC unit may be further reduced by cascading output terminals of the power supply or the DC-to-DC unit and cascading inputs of the DC-to-AC unit, thereby reducing system costs. In addition, in the power system provided in the embodiments of this application, cascaded input and isolated output of the DC-to-AC unit can reduce a specification of a power conversion device.
-
公开(公告)号：US20240128763A1
公开(公告)日：2024-04-18
申请号：US18397752
申请日：2023-12-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xun Wang
CPC classification number: H02J3/46 , H02J3/32 , H02J3/34 , H02J3/381 , H02J7/0016 , H02J7/0047 , H02J2300/24
Abstract: The present disclosure discloses an energy storage converter, wherein a first end of the energy storage converter is coupled to at least one of the Q cell strings, and second end of the energy storage converter is configured to connect to a power grid. The first energy storage converter includes a DC/AC conversion unit and at least one DC/DC conversion unit. The DC/DC conversion unit is configured to perform adaptation between a voltage of the DC/AC conversion unit and a voltage of a cell string. Therefore, a cell capacity is fully used, and a waste of the cell capacity is reduced.
-
公开(公告)号：US20240097427A1
公开(公告)日：2024-03-21
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.
-
-
-
-
-
-
-
-
-
Search Results
38
records
(took 0.018 seconds)
