公开(公告)号：US20220294290A1

公开(公告)日：2022-09-15

申请号：US17739887

申请日：2022-05-09

Applicant: DENSO CORPORATION

Inventor： Yuki TAKAHASHI ,  Aki FUKUHARA

IPC: H02K1/2783 ,  H02P25/22 ,  H02P6/182

Abstract: A rotating electrical machine equipped with a magnetic field-producing unit which includes a magnet unit having magnets each of which has easy axes of magnetization oriented to extend linearly parallel to each other and defines a plurality of magnetic paths along the easy axes of magnetization. The magnets are discrete from each other through a d-axis defined on the center of the magnetic pole and a q-axis defined on a magnetic boundary between the magnetic poles. The magnets are configured to have a back electromotive force constant which is higher than that of parallel-oriented magnets when an angle of rotation of the rotor lies in a first angle range including the gravity center of the magnets. The parallel-oriented magnets are designed to have magnetic paths which are different from those of the magnets of the magnet unit and oriented along easy axes of magnetization extending linearly parallel to the d-axis.