×

Active magnetic bearing assembly using permanent magnet biased homopolar and reluctance centering effects

  • US 6,603,230 B1
  • Filed: 01/30/2002
  • Issued: 08/05/2003
  • Est. Priority Date: 01/30/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. An active magnetic bearing assembly for rotationally mounting a shaft in a non-contact manner, the bearing assembly comprising:

  • a first bearing rotor having at least a first pole and a second pole face;

    a first stator assembly spaced radially outwardly of the first bearing rotor and having at least a first pole face and a second pole face that are axially offset from the first bearing rotor first pole face and second pole face, respectively, by a first predetermined distance in a first direction;

    a second bearing rotor having at least a first pole face and a second pole face; and

    a second stator assembly spaced radially outwardly of the second bearing rotor and having at least a first pole face and a second pole face that are axially offset from the second bearing rotor first pole face and second pole face, respectively, by a second predetermined distance in a second direction that is opposite the first direction, wherein the first and second stator assemblies each comprise;

    a first stator body including at least one coil wound pole having the first pole face, a second stator body including at least one coil wound pole having the second pole face, and an axially polarized permanent magnet disposed between, and coupling together, the first and the second stator bodies.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×