公开(公告)号：US20210328436A1

公开(公告)日：2021-10-21

申请号：US17362119

申请日：2021-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing GAO ,  Panpan WANG ,  Chengfeng JIANG

IPC: H02J3/38 ,  H02M3/158

Abstract: A photovoltaic converter string is provided, to control, one of switching transistors in a buck/boost circuit of the photovoltaic converter to be conducted, wherein the switching transistors are connected in parallel to a bypass diode; and control the other switching transistors in the buck/boost circuit to be cut off. Therefore, an output voltage of the photovoltaic converter is applied to both ends of the non-conducted switching transistor in the switching transistors connected in parallel to the bypass diode, and after the output voltage of the photovoltaic converter reaches a breakdown voltage of the non-conducted switching transistor, an avalanche breakdown occurs on the non-conducted switching transistor, and a voltage of both ends of the bypass diode connected to a positive output end and a negative output end of the photovoltaic converter is clamped to be less than or equal to the breakdown voltage of the switching transistor.

公开(公告)号：US20250105751A1

公开(公告)日：2025-03-27

申请号：US18969614

申请日：2024-12-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongfa ZHU ,  Zhiqiang ZENG ,  Xiangyuan DENG ,  Jinsen CAI ,  Benhu LI ,  Haitao CHEN ,  Chengfeng JIANG

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/00

Abstract: This disclosure provides a converter and an electronic device that incorporates the converter. The converter includes: an input terminal, a first inverter circuit, a first transformer, a first rectifier circuit, and an output terminal. The first transformer includes a first primary-side winding and a first secondary-side winding. The input terminal is connected to a first terminal of the first inverter circuit, a second terminal of the first inverter circuit is connected to the first primary-side winding, and the first rectifier circuit is connected between the first secondary-side winding and the output terminal. A third terminal of the first inverter circuit is connected to the output terminal; or a third terminal of the first inverter circuit is connected to the first secondary-side winding. In this disclosure, a loss of the converter can be reduced.

公开(公告)号：US20200266630A1

公开(公告)日：2020-08-20

申请号：US16868248

申请日：2020-05-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chengfeng JIANG ,  Chengyong LIU ,  Qingyuan WANG

IPC: H02J3/38 ,  H02J3/42 ,  H02S50/10 ,  H02J3/00

Abstract: A physical address determining method, apparatus, and device, and a storage medium, and belongs to the field of solar power generation, includes: controlling at least two slave nodes to sequentially start up, and detecting a change status of an input voltage of the master node; dividing a photovoltaic power generation system into a plurality of photovoltaic strings; and for each candidate photovoltaic string, controlling any slave node located in the candidate photovoltaic string to start up and other slave nodes to shut down, and using the physical address as a physical address of the candidate photovoltaic string. This disclosure provides a manner of automatically determining a physical address of a photovoltaic string, thereby implementing photovoltaic-string locating and expanding a system function range. When an anomaly occurs, the anomaly can be eliminated in a timely manner, thereby improving system stability.