公开(公告)号：US12107425B2

公开(公告)日：2024-10-01

申请号：US17980812

申请日：2022-11-04

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaofeng Yao ,  Yang Cheng ,  Guozhao Duan

IPC: H02J3/38 ,  H02J3/00 ,  H02M1/32

CPC classification number: H02J3/381 ,  H02J3/00125 ,  H02M1/32 ,  H02J2300/24

Abstract: This application discloses a photovoltaic power generation system and method, and the system includes an inverter and at least one shutdown apparatus. A type of the shutdown apparatus includes at least one of a shutdown device and an optimizer; and an input end of each shutdown apparatus is connected to a corresponding PV module, and power of the corresponding PV module is output. In the system, when a parameter of the inverter meets a preset condition, some shutdown apparatuses are turned off to lower an input voltage of the inverter, and ensure that an input end of the inverter has a direct current source, and the system can operate as usual; and the preset condition is that the input voltage of the inverter is greater than a first preset voltage, or an input current of the inverter is less than a first preset current.

公开(公告)号：US20250100393A1

公开(公告)日：2025-03-27

申请号：US18900284

申请日：2024-09-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ben Zhang ,  Guozhao Duan ,  Litao Fan

IPC: B60L15/20 ,  B60L50/60 ,  H02M1/088 ,  H02M7/5387 ,  H02P27/08

Abstract: This application provides a powertrain, a control method for a motor controller, and an electric vehicle. The powertrain includes a motor controller and a drive motor, the motor controller includes three bridge arms connected in parallel, and a bridge arm midpoint of one of the three bridge arms is configured to connect to the other end of the direct current power supply. In response to that the direct current power supply switches from outputting a direct current to stopping outputting the direct current, an upper bridge arm switching transistor of one bridge arm of the other two bridge arms of the three bridge arms is turned on and a lower bridge arm switching transistor of the other bridge arm of the other two bridge arms is turned on. The power battery is configured to supply power to one phase winding and another phase winding, to reduce slipping sound.