公开(公告)号：US12199522B2

公开(公告)日：2025-01-14

申请号：US17826395

申请日：2022-05-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiwu Xu ,  Yongbing Gao ,  Niantao Jiang

IPC: H02M7/48 ,  H02J3/38 ,  H02M1/32 ,  H02S40/32

Abstract: A method and an apparatus for detecting a short circuit of an inverter, and an inverter are provided. A voltage of a common bus is increased when a plurality of boost circuits in the inverter are all in a non-working state, and after circuit parameters of input sides of all the plurality of boost circuits are detected, a boost circuit in which a diode is short-circuited in the plurality of boost circuits is further determined based on the circuit parameters of the input sides of the boost circuits. According to the method and the apparatus for detecting a short circuit of an inverter, and the inverter, circuit complexity of the inverter can be reduced, and circuit complexity of a photovoltaic power generation system including the inverter is reduced.

公开(公告)号：US20220294361A1

公开(公告)日：2022-09-15

申请号：US17826395

申请日：2022-05-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiwu XU ,  Yongbing Gao ,  Niantao Jiang

IPC: H02M7/48 ,  H02M1/32 ,  H02J3/38 ,  H02S40/32

Abstract: A method and an apparatus for detecting a short circuit of an inverter, and an inverter are provided. A voltage of a common bus is increased when a plurality of boost circuits in the inverter are all in a non-working state, and after circuit parameters of input sides of all the plurality of boost circuits are detected, a boost circuit in which a diode is short-circuited in the plurality of boost circuits is further determined based on the circuit parameters of the input sides of the boost circuits. According to the method and the apparatus for detecting a short circuit of an inverter, and the inverter, circuit complexity of the inverter can be reduced, and circuit complexity of a photovoltaic power generation system including the inverter is reduced.