公开(公告)号：US20230009407A1

公开(公告)日：2023-01-12

申请号：US17944424

申请日：2022-09-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Qiqi GUO ,  Yu WANG ,  Zhao ZHOU ,  Yang ZHENG

IPC: H02K3/28 ,  H02K3/12

Abstract: A stator includes a stator core and a stator winding. An inner wall of the stator core is provided with M winding slots, the M winding slots are uniformly disposed in a circumferential direction of the inner wall of the stator core. The stator winding includes flat wire conductors inserted in the winding slots, N layers of flat wire conductors are disposed in any one of the winding slots, and phase units of a first-phase winding, phase units of a second-phase winding, and phase units of a third-phase winding are sequentially and periodically arranged along the inner wall of the stator core. Each phase winding includes P parallel branches. Any one of the parallel branches connects flat wire conductors of M·N/3P layers.

公开(公告)号：US20220206522A1

公开(公告)日：2022-06-30

申请号：US17696596

申请日：2022-03-16

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Guilei GU ,  Zhiwu WU ,  Yu WANG

IPC: G05F1/67 ,  H02S40/32

Abstract: This application relates to a converter in a photovoltaic power generation system and a converter control method. An input end of the converter is connected to at least one photovoltaic module, and an output end is connected to an inverter. The control method includes: determining an output power-voltage (PV) curve of a converter based on an output PV curve of the photovoltaic module; and controlling a voltage output of the converter based on the output PV curve of the converter. The output PV curve includes at least a simulated voltage limiting section and a constant power section that are connected. In this application, an existing MPPT control policy of the inverter can be adapted when a voltage-limited output is implemented, to avoid a case in which a power of a photovoltaic string drops to zero.

公开(公告)号：US20240154477A1

公开(公告)日：2024-05-09

申请号：US18501353

申请日：2023-11-03

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Yingqian LIN ,  Yu WANG ,  Yi SUN

IPC: H02K1/276

CPC classification number: H02K1/276

Abstract: This application describes examples of a rotor, a permanent magnet motor and a powertrain. In one example, in a first rotor assembly of a rotor structure, each first rotor lamination is provided with a plurality of first permanent magnet slot groups, and a first boss is disposed at one end that is of each first permanent magnet slot of the first permanent magnet slot group and that is close to an outer edge of the first rotor lamination. In a second rotor assembly of the rotor structure, each second rotor lamination is provided with a plurality of second permanent magnet slot groups, and a second boss is disposed at one end that is of each second permanent magnet slot of the second permanent magnet slot group and that is close to an outer edge of the second rotor lamination.