公开(公告)号：US20230013471A1

公开(公告)日：2023-01-19

申请号：US17955290

申请日：2022-09-28

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Chenghao SUN ,  Chengyong LIU ,  Jie REN ,  Xue ZHANG

IPC: H02J7/06 ,  H02J7/00 ,  H02M3/335 ,  H02M7/06 ,  H01M10/44

Abstract: Embodiments of this application provide charging apparatuses, charging apparatus control methods, and charging systems, and relate to the field of terminal device charging technologies. The charging apparatus includes a rectifier circuit, a transformer, a lower bridge switch, a clamp capacitor, an upper bridge switch, and a controller. The transformer includes a primary coil and at least one secondary coil. The controller is configured to control the upper bridge switch and the lower bridge switch to be alternatively turned on. The controller is further configured to obtain a sampling waveform at a location at which the controller is electrically connected to the transformer when the lower bridge switch is turned off, and, when the sampling waveform is abnormal, turn off the lower bridge switch in a first phase of a next charging cycle. The sampling waveform includes a voltage waveform of the primary coil or a voltage waveform of the secondary coil.

公开(公告)号：US20220255322A1

公开(公告)日：2022-08-11

申请号：US17731083

申请日：2022-04-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chengfeng JIANG ,  Chengyong LIU ,  Qingyuan WANG

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

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.