公开(公告)号：US11502643B2

公开(公告)日：2022-11-15

申请号：US17014584

申请日：2020-09-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tao Luo ,  Xiaming Jing ,  Boning Huang

IPC: H02S50/10 ,  G01R31/26

Abstract: Embodiments of a degradation phenomenon treatment method based on a photovoltaic module and a related device are disclosed. A high frequency signal is applied to the photovoltaic module when a degradation phenomenon occurs in the photovoltaic module to protect the photovoltaic module and suppress or eliminate the degradation phenomenon. The degradation phenomenon refers to degradation of electricity generation efficiency of the photovoltaic module under effect of an electric potential. Embodiments of the degradation phenomenon treatment method and the device resolve issues associated with a declined electrical energy conversion capability and decreased electricity generation efficiency of a photovoltaic module caused by a surface polarization phenomenon, a potential induced degradation (PID) phenomenon occurring in the photovoltaic module, or both.

公开(公告)号：US20240175948A1

公开(公告)日：2024-05-30

申请号：US18436724

申请日：2024-02-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shu Zhong ,  Xiaolu Hu ,  Xiaming Jing ,  Liqiong Yi ,  Xiaoqing Hu ,  Tao Xie

IPC: G01R33/09 ,  G01R19/00 ,  H02M1/00

CPC classification number: G01R33/091 ,  G01R19/0092 ,  H02M1/0009

Abstract: A current detection apparatus includes a magnetic sensor, configured to sense a magnetic field change of a to-be-tested current path, and convert the magnetic field change into an electrical signal; and a magnetically conductive unit, including a magnetically conductive material. The magnetically conductive unit is disposed on at least one of the following positions: a left side of the magnetic sensor, a right side of the magnetic sensor, and an upper side of the magnetic sensor, and the left side and the right side of the magnetic sensor are a left side and a right side of the magnetic sensor along the to-be-tested current path.

公开(公告)号：US20230187114A1

公开(公告)日：2023-06-15

申请号：US18166010

申请日：2023-02-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaoqing Hu ,  Yanjun Zhi ,  Xiaming Jing

IPC: H01F27/255 ,  H01F27/28 ,  H01F41/02 ,  H01F27/30 ,  H01F27/32 ,  H01F27/06

CPC classification number: H01F27/255 ,  H01F27/2847 ,  H01F41/0246 ,  H01F27/306 ,  H01F27/324 ,  H01F27/06 ,  H01F2027/065

Abstract: A power inductor includes a winding and a metal magnetic powder core. The metal magnetic powder core is configured to support the winding, and the winding uses a metal conductive sheet. During assembly, the metal magnetic powder core is integrated with the winding through pressing, the metal magnetic powder core wraps the winding, and the metal magnetic powder core is insulated from the winding. The winding has a first pin and a second pin, and the first pin and the second pin are exposed on different surfaces of the metal magnetic powder core. Pins are separately disposed on two different surfaces of the power inductor. In addition, the winding is formed by integrally pressing the metal conductive sheet and the metal magnetic powder core.

公开(公告)号：US20250070674A1

公开(公告)日：2025-02-27

申请号：US18945433

申请日：2024-11-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tao Luo ,  Biao Ren ,  Xiaming Jing

IPC: H02M3/335

Abstract: A solid-state transformer includes a first phase circuit and a low-voltage side auxiliary power supply. The first phase circuit has an input end connected to a single-phase medium-voltage alternating current, and an output end connected to an output end of a low-voltage direct current. The first phase circuit includes N power units. Input ends of the N power units in the first phase circuit are connected in series and are connected to the single-phase medium-voltage alternating current. Output ends the N power units are connected in parallel and are connected to the output end of the low-voltage direct current. The low-voltage side auxiliary power supply is connected to the output end of the low-voltage direct current. First direct currents output from the output ends of the N power units are used to supply power to the low-voltage side auxiliary power supply.