公开(公告)号：US20230387845A1

公开(公告)日：2023-11-30

申请号：US17828413

申请日：2022-05-31

Applicant: STMICROELECTRONICS (BEIJING) R&D CO. LTD

Inventor： Na Zhang

IPC: H02P21/34 ,  H02P21/10

CPC classification number: H02P21/34 ,  H02P21/10 ,  H02P2207/055

Abstract: A method of starting a permanent magnet synchronous motor (PMSM) with field oriented control (FOC) includes: opening a first control loop of the PMSM; setting a first direction for a first current component of the PMSM; aligning a rotor of the PMSM to the first direction; after aligning the rotor, setting a second direction for the first current component, where the second direction is rotated from the first direction by 90 degrees; after setting the second direction, starting the rotor while the first control loop of the PMSM remains open; after starting the rotor, increasing a rotation speed of the rotor by operating the first control loop in a first closed-loop mode; and after increasing the rotation speed of the rotor, controlling the rotation speed of the rotor by operating the first control loop in a second closed-loop mode different from the first closed-loop mode.

公开(公告)号：US11942882B2

公开(公告)日：2024-03-26

申请号：US17828413

申请日：2022-05-31

Applicant: STMICROELECTRONICS (BEIJING) R&D CO. LTD

Inventor： Na Zhang

IPC: H02P21/34 ,  H02P21/10

CPC classification number: H02P21/34 ,  H02P21/10 ,  H02P2207/055

Abstract: A method of starting a permanent magnet synchronous motor (PMSM) with field oriented control (FOC) includes: opening a first control loop of the PMSM; setting a first direction for a first current component of the PMSM; aligning a rotor of the PMSM to the first direction; after aligning the rotor, setting a second direction for the first current component, where the second direction is rotated from the first direction by 90 degrees; after setting the second direction, starting the rotor while the first control loop of the PMSM remains open; after starting the rotor, increasing a rotation speed of the rotor by operating the first control loop in a first closed-loop mode; and after increasing the rotation speed of the rotor, controlling the rotation speed of the rotor by operating the first control loop in a second closed-loop mode different from the first closed-loop mode.