Electrostatic stabilizer for a passive magnetic bearing system
Electrostatic stabilizers are provided for passive bearing systems composed of annular magnets having a net positive stiffness against radial displacements and that have a negative stiffness for vertical displacements, resulting in a vertical instability. Further embodiments are shown of a radial electrostatic stabilizer geometry (using circuitry similar to that employed in the vertical stabilizer). This version is suitable for stabilizing radial (lateral) displacements of a rotor that is levitated by annular permanent magnets that are stable against vertical displacements but are unstable against radial displacements.
- Issue Date:
- OSTI Identifier:
- 1328695
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
- Patent Number(s):
- 9,464,670
- Application Number:
- 14/928,729
- Contract Number:
- AC52-07NA27344
- Resource Relation:
- Patent File Date: 2015 Oct 30
- Research Org:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
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Works referenced in this record:
Dynamically stable magnetic suspension/bearing system
patent, February 1996
patent, February 1996
- Post, Richard F.
- US Patent Document 5,495,221
Passive magnetic bearing element with minimal power losses
patent, December 1998
patent, December 1998
- Post, Richard F.
- US Patent Document 5,847,480