Force-balancing magnetic bearing with adjustable bias magnetic field for stator permanent magnet motor

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.