公开(公告)号：US20240405586A1

公开(公告)日：2024-12-05

申请号：US18805914

申请日：2024-08-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/48 ,  H02J7/34

Abstract: An energy storage apparatus includes an energy storage unit and a conversion unit. The conversion unit may be configured to: obtain a given port voltage of the conversion unit based on running information of the energy storage unit, control a real-time port voltage of the conversion unit based on the given port voltage of the conversion unit, and control a real-time port current of the energy storage unit based on the given port voltage and the real-time port voltage of the conversion unit. The energy storage unit may be configured to be discharged or charged based on the real-time port current of the energy storage unit.

公开(公告)号：US12015304B2

公开(公告)日：2024-06-18

申请号：US17969194

申请日：2022-10-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Ran Li

IPC: H02J9/06 ,  H02J3/01 ,  H02J3/18 ,  H02J3/32

CPC classification number: H02J9/062 ,  H02J3/01 ,  H02J3/18 ,  H02J3/32

Abstract: A power supply system includes a plurality of parallelly-connected uninterruptible power supplies (UPSs), where each UPS collects a first current of the UPS within a collection period in a first duration. In a current equalization period in the first duration, a direct current to alternating current conversion module is controlled to output a first compensation current, where the first compensation current includes at least one of a first compensation reactive current component or a first quantity of first compensation harmonic components.

公开(公告)号：US20230187966A1

公开(公告)日：2023-06-15

申请号：US18158910

申请日：2023-01-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Chuntao Zhang

IPC: H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0013 ,  H02J7/0063 ,  H02J7/0048 ,  H02J7/00032 ,  H02J7/00712 ,  H02J9/062

Abstract: This application discloses a non-current equalization UPS apparatus, a current distribution method, and a parallel UPS system. The current distribution method may be applied to any UPS apparatus in a parallel UPS system. A current proportion of a first current output by the any UPS apparatus in a total output current of the parallel UPS system is positively related to a capacity proportion of an available battery capacity of a battery string correspondingly connected to the any UPS apparatus in a total available battery capacity of the parallel UPS system. Therefore, a system backup time of the parallel UPS system can be prolonged, and resource utilization of a battery string with a large available battery capacity can be improved.

公开(公告)号：US20230122255A1

公开(公告)日：2023-04-20

申请号：US17969194

申请日：2022-10-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Ran Li

IPC: H02J9/06 ,  H02J3/18 ,  H02J3/01 ,  H02J3/32

Abstract: A power supply system includes a plurality of parallelly-connected uninterruptible power supplies (UPSs), where each UPS collects a first current of the UPS within a collection period in a first duration. In a current equalization period in the first duration, a direct current to alternating current conversion module is controlled to output a first compensation current, where the first compensation current includes at least one of a first compensation reactive current component or a first quantity of first compensation harmonic components.

公开(公告)号：US12176751B2

公开(公告)日：2024-12-24

申请号：US18158910

申请日：2023-01-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Chuntao Zhang

IPC: H02J9/06 ,  H02J7/00

Abstract: This application discloses a non-current equalization UPS apparatus, a current distribution method, and a parallel UPS system. The current distribution method may be applied to any UPS apparatus in a parallel UPS system. A current proportion of a first current output by the any UPS apparatus in a total output current of the parallel UPS system is positively related to a capacity proportion of an available battery capacity of a battery string correspondingly connected to the any UPS apparatus in a total available battery capacity of the parallel UPS system. Therefore, a system backup time of the parallel UPS system can be prolonged, and resource utilization of a battery string with a large available battery capacity can be improved.

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.