公开(公告)号：US20240396478A1

公开(公告)日：2024-11-28

申请号：US18292108

申请日：2021-07-30

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Shinichi AKIMOTO ,  Kazuhiko HIRAMATSU

IPC: H02P6/21 ,  H02K29/08 ,  H02P6/16

Abstract: A motor control device that can use a sensor input circuit that has a low response speed. The motor control device comprises a first magnetic pole position detection unit, a second magnetic pole position detection unit, and a control unit. The first magnetic pole position detection unit detects the pre-rotation position of a magnetic pole of a rotor based on detection results from a magnetic pole sensor. The second magnetic pole position detection unit detects the position of the magnetic pole of the rotor based on the current flowing in a plurality of drive windings that drive the rotor. The control unit performs control that makes the rotor start rotating based on detection results from the first magnetic pole position detection unit and control that makes the rotating rotor rotate based on detection results from the second magnetic pole position detection unit.