公开(公告)号：US11811235B2

公开(公告)日：2023-11-07

申请号：US17447485

申请日：2021-09-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Minghui Xu ,  Tiansan Lin ,  Yongbing Gao

IPC: H02J3/38 ,  H02J3/46 ,  H02M1/32 ,  H02M7/493

CPC classification number: H02J3/381 ,  H02J3/46 ,  H02M1/32 ,  H02M7/493

Abstract: An inverter apparatus is disclosed in this application, which includes a plurality of protection units and a plurality of inverter units. For any protection unit, when a voltage at an input terminal of the protection unit is greater than a voltage at an output terminal of the protection unit, a path between the input terminal and the output terminal of the protection unit is in a forward conducted state; when the voltage at the output terminal of the protection unit is greater than the voltage at the input terminal voltage of the protection unit, the path between the input terminal and the output terminal of the protection unit is in a reverse cut-off state; and when a control terminal of the protection unit receives a first trigger signal, the path between the input terminal and the output terminal of the protection unit is in a reverse conducted state.

公开(公告)号：US20220158443A1

公开(公告)日：2022-05-19

申请号：US17589316

申请日：2022-01-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Fangpo Zhang ,  Jun Wang ,  Tiansan Lin ,  Houjian Xu

IPC: H02H7/12 ,  H02M1/32 ,  H02M3/158

Abstract: A fault isolation apparatus includes a controller and a circuit breaker. When the circuit breaker is located on a bus connected to a DC/DC conversion unit, if a voltage collected by a first voltage collection terminal is a negative value, it indicates that input or output of the DC/DC conversion unit is reversely connected. In this case, if the circuit breaker is controlled to be opened, the DC/DC conversion unit can be prevented from being connected in series to other parallel DC/DC conversion units. If a voltage collected by a first voltage collection terminal is low and a current collected by a current collection terminal is large, it indicates that the DC/DC conversion unit is short-circuited. In this case, if the circuit breaker is controlled to be opened, another component connected in series to the DC/DC conversion unit can also be prevented from backfeeding energy to the DC/DC conversion unit.