Patent ID: 11909297
Assignee: SOUTHEAST UNIVERSITY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. A force-balancing magnetic bearing with an adjustable bias magnetic field for a stator permanent magnet motor, comprising:
a magnetic suspension bearing rotor, an electromagnetic pole stator, an electromagnetic pole and permanent magnetic pole isolation plate, permanent-magnet two-side magnetic pole connection sections, left permanent-magnet magnetic poles, right permanent-magnet magnetic poles, magnetic adjusting sections, left magnetic bridges and right magnetic bridges, wherein
the magnetic suspension bearing rotor is assembled on a motor rotating shaft,
the permanent-magnet two-side magnetic pole connection sections are assembled on a back side of the electromagnetic pole and permanent magnetic pole isolation plate and embedded between adjacent electromagnetic pole stators,
the electromagnetic pole and permanent magnetic pole isolation plate is provided with recesses for the left permanent-magnet magnetic poles and the right permanent-magnet magnetic poles to be embedded therein,
the left permanent-magnet magnetic poles and the right permanent-magnet magnetic poles are assembled on the electromagnetic pole and permanent magnetic pole isolation plate to clamp the permanent-magnet two-side magnetic pole connection sections,
the magnetic adjusting sections are assembled between the left permanent-magnet magnetic poles and the right permanent-magnet magnetic poles,
the left magnetic bridges are attached to the left permanent-magnet magnetic poles, the right magnetic bridges are attached to the right permanent-magnet magnetic poles, and the left magnetic bridges and the right magnetic bridges clamping two sides of permanent magnet sections extending out of a core,
the electromagnetic pole and permanent magnetic pole isolation plate, the permanent-magnet two-side magnetic pole connection sections, the left permanent-magnet magnetic poles, the right permanent-magnet magnetic poles and the magnetic adjusting sections form a bias magnetic circuit of the permanent magnet sections extending out of the core.