公开(公告)号：US12136889B2

公开(公告)日：2024-11-05

申请号：US18184091

申请日：2023-03-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Xiaofei Zhang ,  Peng Shuai

IPC: H02M7/23 ,  B60L53/12 ,  H02J1/00 ,  H02J1/10 ,  H02J7/00 ,  H02J7/02 ,  H02J50/10 ,  H02M3/00 ,  H02M3/158

Abstract: A power system, related to the field of electronic power. The power system includes a centralized controller and three power modules. Each phase of an alternating current power supply is connected to one power module, and an input end of each power module is connected to one phase of the alternating current power supply. Each power module includes a low voltage controller and at least two power units. Each power unit includes a unit controller. The centralized controller is connected to each low voltage controller by using a bus. The centralized controller sends a control signal to each unit controller by using each low voltage controller, to control the unit controller and/or a power conversion circuit. The power system can implement hot swap of the power module and improve on-site operation reliability.

公开(公告)号：US11909308B2

公开(公告)日：2024-02-20

申请号：US17544690

申请日：2021-12-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhuyong Huang ,  Xiaofei Zhang ,  Peng Shuai ,  Peiguo Liu

IPC: H02M1/36 ,  H02M5/10

CPC classification number: H02M1/36 ,  H02M5/10

Abstract: Embodiments of this application provide a power conversion circuit. The power conversion circuit includes at least one first power conversion unit connected in series to a first phase line, at least one second power conversion unit connected in series to a second phase line, at least one third power conversion unit connected in series to a third phase line, a plurality of first start circuits connected in series to the first phase line, and a plurality of second start circuits connected in series to the second phase line. Each first start circuit includes a first relay and a first resistor that are connected in parallel, and first relays in all the first start circuits are sequentially closed after the power conversion circuit is powered on, to start the power conversion circuit. Each second start circuit includes a second relay and a second resistor that are connected in parallel.

公开(公告)号：US12212221B2

公开(公告)日：2025-01-28

申请号：US17899611

申请日：2022-08-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhuyong Huang ,  Xiaofei Zhang ,  Peng Shuai

IPC: H02M1/00 ,  H02M3/00 ,  H02M7/217 ,  H02M7/23

Abstract: This application discloses a power electronic transformer wherein each phase includes a plurality of power conversion modules. Each power conversion module includes a rectifier AC/DC circuit, a direct current bus capacitor, and a direct current-direct current DC/DC circuit. In each power conversion module, an output end of the AC/DC circuit is connected to an input end of the DC/DC circuit; the direct current bus capacitor is connected in parallel to the output end of the AC/DC circuit; and input ends of all the AC/DC circuits are connected in series, and output ends of all the DC/DC circuits are connected in parallel. The power electronic transformer includes a relatively small quantity of power conversion modules, thereby reducing occupied space and costs.

公开(公告)号：US20230170814A1

公开(公告)日：2023-06-01

申请号：US18161225

申请日：2023-01-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhengdong Jiang ,  Peng Shuai ,  Zhuyong Huang

IPC: H02M5/14 ,  H02M1/00 ,  H02M1/36

CPC classification number: H02M5/14 ,  H02M1/007 ,  H02M1/36

Abstract: A solid-state transformer (10) that maintains output voltage continuity during maintenance is provided. The solid-state transformer includes an input end (101), a plurality of power units (U1 to UM), and an output end (102). The input end is configured to input first three-phase alternating-current electrical power. The plurality of power units are connected in parallel to the input end and the output end, and each power unit is configured to convert the first three-phase alternating-current electrical power into first direct-current electrical power, and output the first direct-current electrical power from the output end. A power supply system (100) including the foregoing solid-state transformer is further included.