Passive magnetic bearing element with minimal power losses

Post, Richard F

Title: Passive magnetic bearing element with minimal power losses

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Abstract

Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in U.S. Patent No. 5,495,221 entitled "Dynamically Stable Magnetic Suspension/Bearing System." The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity.

Inventors:

Post, Richard F ^[1]

Walnut Creek, CA

Issue Date:: 1998-01-01

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

OSTI Identifier:: 872032

Patent Number(s):: 5847480

Assignee:: Regents of University of California (Oakland, CA)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16C - SHAFTS

H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES

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F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16C - SHAFTS
F16C32/0436 - {with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part}

H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
H02K7/09 - with magnetic bearings

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: passive; magnetic; bearing; element; minimal; power; losses; systems; employing; elements; provided; improved; stabilizing; shown; periodic; magnet; arrays; inductively; loaded; circuits; characteristics; compared; disclosed; 495; 221; entitled; dynamically; stable; suspension; improvements; relate; increasing; magnitude; force; derivative; time; reducing; dissipated; normal; operation; provide; virtually; equilibrium; conditions; supported; subject; accelerations; gravity; bearing element; improved characteristics; passive magnetic; power loss; bearing elements; magnetic bearing; normal operation; magnet arrays; power dissipated; power losses; minimal power; systems employing; stable magnetic; passive bearing; systems employ; inductively loaded; periodic magnet; stabilizing element; dynamically stable; magnetic suspension; /310/

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                    Post, Richard F. Passive magnetic bearing element with minimal power losses.  United States: N. p., 1998. 
        Web.

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                    Post, Richard F. Passive magnetic bearing element with minimal power losses.  United States.

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                    Post, Richard F. Thu .  
        "Passive magnetic bearing element with minimal power losses".  United States.  https://www.osti.gov/servlets/purl/872032.

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@article{osti_872032,

  title        = {Passive magnetic bearing element with minimal power losses},

  author       = {Post, Richard F},

  abstractNote = {Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in U.S. Patent No. 5,495,221 entitled "Dynamically Stable Magnetic Suspension/Bearing System." The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {1}

}

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