公开(公告)号：US11271404B2

公开(公告)日：2022-03-08

申请号：US16793252

申请日：2020-02-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Feng Yang ,  Chengyong Liu ,  Chengfeng Jiang

IPC: H02J3/38 ,  H02M3/158 ,  H02M1/32

Abstract: This application provides a photovoltaic power optimizer and a method and apparatus for controlling same, and a photovoltaic power generation system. The photovoltaic power optimizer includes: a power optimization module, a bypass module, and a control module, where the bypass module is connected to an input end of the power optimization module, an output end of the power optimization module, and the control module, and the control module is connected to the power optimization module; and when detecting that the power optimization module is faulty, the control module is configured to control the bypass module to be on, to bypass the faulty power optimization module, so that the photovoltaic battery component can be directly connected to other battery groups in the photovoltaic power generation system, and connected to an inverter.

公开(公告)号：US20200185923A1

公开(公告)日：2020-06-11

申请号：US16793252

申请日：2020-02-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Feng Yang ,  Chengyong Liu ,  Chengfeng Jiang

IPC: H02J3/38 ,  H02M3/158

Abstract: This application provides a photovoltaic power optimizer and a method and apparatus for controlling same, and a photovoltaic power generation system. The photovoltaic power optimizer includes: a power optimization module, a bypass module, and a control module, where the bypass module is connected to an input end of the power optimization module, an output end of the power optimization module, and the control module, and the control module is connected to the power optimization module; and when detecting that the power optimization module is faulty, the control module is configured to control the bypass module to be on, to bypass the faulty power optimization module, so that the photovoltaic battery component can be directly connected to other battery groups in the photovoltaic power generation system, and connected to an inverter.

公开(公告)号：US10917014B2

公开(公告)日：2021-02-09

申请号：US16805092

申请日：2020-02-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chengfeng Jiang ,  Hongfeng Liang

IPC: H02M3/156 ,  H02M3/158

Abstract: A free-wheeling diode control method includes determining whether a sum of a first pulse width value of a free-wheeling diode obtained according to an inductance current law and a third pulse width value of a main control tube meets a first preset condition, obtaining a determining result, and controlling, according to the determining result, conduction of the free-wheeling diode according to the first pulse width value or a second pulse width value of the free-wheeling diode obtained according to a volt-second balance law.