Non-contacting "snubber bearing" for passive magnetic bearing systems

Post, Richard F

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Title: Non-contacting "snubber bearing" for passive magnetic bearing systems

Abstract

A new non-contacting magnetic "snubber" bearing is provided for application to rotating systems such as vehicular electromechanical battery systems subject to frequent accelerations. The design is such that in the equilibrium position the drag force of the snubber is very small (milliwatts). However in a typical case, if the rotor is displaced by as little as 2 millimeters a large restoring force is generated without any physical contact between the stationary and rotating parts of the snubber bearing.

Inventors:: Post, Richard F

Issue Date:: 2017-08-22

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1376063

Patent Number(s):: 9739307

Application Number:: 14/556,029

Assignee:: Lawrence Livermore National Security, LLC

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

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F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16C - SHAFTS
F16C15/00 - Construction of rotary bodies to resist centrifugal force
F16C2361/55 - Flywheel systems
F16C32/0425 - {for radial load mainly}
F16C32/0429 - {for both radial and axial load, e.g. conical magnets}

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Nov 28

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 25 ENERGY STORAGE

Citation Formats


                    Post, Richard F. Non-contacting "snubber bearing" for passive magnetic bearing systems.  United States: N. p., 2017. 
        Web.

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                    Post, Richard F. Non-contacting "snubber bearing" for passive magnetic bearing systems.  United States.

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                    Post, Richard F. Tue .  
        "Non-contacting "snubber bearing" for passive magnetic bearing systems".  United States.  https://www.osti.gov/servlets/purl/1376063.

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@article{osti_1376063,

  title        = {Non-contacting "snubber bearing" for passive magnetic bearing systems},

  author       = {Post, Richard F},

  abstractNote = {A new non-contacting magnetic "snubber" bearing is provided for application to rotating systems such as vehicular electromechanical battery systems subject to frequent accelerations. The design is such that in the equilibrium position the drag force of the snubber is very small (milliwatts). However in a typical case, if the rotor is displaced by as little as 2 millimeters a large restoring force is generated without any physical contact between the stationary and rotating parts of the snubber bearing.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {8}

}

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Works referenced in this record:

Electromagnetic bearing control apparatus
patent, June 1989

Matsushita, Osami; Takagi, Michiyuki; Yoneyama, Mitsuho
US Patent Document 4,841,212
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Dynamically stable magnetic suspension/bearing system
patent, February 1996

Post, Richard F.
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Magnetic levitation system for moving objects
patent, March 1998

Post, Richard F.
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Self-adjusting magnetic bearing systems
patent, July 1998

Post, Richard F.
US Patent Document 5,783,885
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Combined passive bearing element/generator motor
patent, August 2000

Post, Richard F.
US Patent Document 6,111,332
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Motor/active magnetic bearing combination structure
patent, September 2000

Vuillemin (Muller), Ronald Hendrik; Toshiyoshi, Hiroshi; Bleuler, Hannes
US Patent Document 6,114,788
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Magnetic bearings
patent, September 2000

Lembke, Torbjorn
US Patent Document 6,118,199
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Passive magnetic bearing for a horizontal shaft
patent, December 2003

Post, Richard F.
US Patent Document 6,657,344
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6657344

Inductrack magnet configuration
patent, December 2003

Post, Richard F.
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Halbach array generator/motor having an automatically regulated output voltage and mechanical power output
patent, February 2005

Post, Richard F.
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Halbach array generator/motor having mechanically regulated output voltage and mechanical power output
patent, June 2005

Post, Richard F.
US Patent Document 6,906,446
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Eddy-current-damped microelectromechanical switch
patent, October 2007

Christenson, Todd R.; Polosky, Marc A.
US Patent Document 7,289,009
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Motor and magnetic bearing assembly thereof
patent-application, August 2005

Chen, Lee-Long; Huang, Chien-Hsiung; Huang, Shih-Ming
US Patent Document 11/060759; 20050184609
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Method and Apparatus for Controlling a Magnetic Bearing Device
patent-application, December 2007

Buhler, Philipp; Larsonneur, Rene
US Patent Document 11/658886; 20070296367
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Low-Cost Minimal-Loss Flywheel Battery
patent-application, November 2010

Fradella, Richard B.
US Patent Document 12/463275; 20100283340
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Stabilization of Flywheels
patent-application, April 2012

Pinneo, John Michael; Garber, Jonathan Forrest
US Patent Document 13/280232; 20120098370
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Stabilization of Rotating Machinery
patent-application, April 2012

Pinneo, John Michael; Garber, Jonathan Forrest
US Patent Document 13/280314; 20120098371
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System And Method For Damping A Wind Vane
patent-application, June 2012

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Inner Rotor-Type Permanent Magnet Motor
patent-application, April 2013

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Similar Records

Title: Non-contacting "snubber bearing" for passive magnetic bearing systems

Abstract

Citation Formats

Electromagnetic bearing control apparatus patent, June 1989

Dynamically stable magnetic suspension/bearing system patent, February 1996

Magnetic levitation system for moving objects patent, March 1998

Self-adjusting magnetic bearing systems patent, July 1998

Combined passive bearing element/generator motor patent, August 2000

Motor/active magnetic bearing combination structure patent, September 2000

Magnetic bearings patent, September 2000

Passive magnetic bearing for a horizontal shaft patent, December 2003

Inductrack magnet configuration patent, December 2003

Halbach array generator/motor having an automatically regulated output voltage and mechanical power output patent, February 2005

Halbach array generator/motor having mechanically regulated output voltage and mechanical power output patent, June 2005

Eddy-current-damped microelectromechanical switch patent, October 2007

Motor and magnetic bearing assembly thereof patent-application, August 2005

Method and Apparatus for Controlling a Magnetic Bearing Device patent-application, December 2007

Low-Cost Minimal-Loss Flywheel Battery patent-application, November 2010

Stabilization of Flywheels patent-application, April 2012

Stabilization of Rotating Machinery patent-application, April 2012

System And Method For Damping A Wind Vane patent-application, June 2012

Inner Rotor-Type Permanent Magnet Motor patent-application, April 2013

Electromagnetic bearing control apparatus
patent, June 1989

Dynamically stable magnetic suspension/bearing system
patent, February 1996

Magnetic levitation system for moving objects
patent, March 1998

Self-adjusting magnetic bearing systems
patent, July 1998

Combined passive bearing element/generator motor
patent, August 2000

Motor/active magnetic bearing combination structure
patent, September 2000

Magnetic bearings
patent, September 2000

Passive magnetic bearing for a horizontal shaft
patent, December 2003

Inductrack magnet configuration
patent, December 2003

Halbach array generator/motor having an automatically regulated output voltage and mechanical power output
patent, February 2005

Halbach array generator/motor having mechanically regulated output voltage and mechanical power output
patent, June 2005

Eddy-current-damped microelectromechanical switch
patent, October 2007

Motor and magnetic bearing assembly thereof
patent-application, August 2005

Method and Apparatus for Controlling a Magnetic Bearing Device
patent-application, December 2007

Low-Cost Minimal-Loss Flywheel Battery
patent-application, November 2010

Stabilization of Flywheels
patent-application, April 2012

Stabilization of Rotating Machinery
patent-application, April 2012

System And Method For Damping A Wind Vane
patent-application, June 2012

Inner Rotor-Type Permanent Magnet Motor
patent-application, April 2013