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Title: Passive magnetic bearing for a motor-generator

Abstract

Conductive lap windings are interleaved with conventional loops in the stator of a motor-generator. The rotor provides magnetic induction lines that, when rotated, cut across the lap windings and the loops. When the rotor is laterally displaced from its equilibrium axis of rotation, its magnetic lines of induction induce a current in the interleaved lap windings. The induced current interacts with the magnetic lines of induction of the rotor in accordance with Lenz's law to generate a radial force that returns the rotor to its equilibrium axis of rotation.

Inventors:
 [1]
  1. Walnut Creek, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908336
Patent Number(s):
7078838
Application Number:
09/946,298
Assignee:
The Regents of the 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
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Post, Richard F. Passive magnetic bearing for a motor-generator. United States: N. p., 2006. Web.
Post, Richard F. Passive magnetic bearing for a motor-generator. United States.
Post, Richard F. Tue . "Passive magnetic bearing for a motor-generator". United States. https://www.osti.gov/servlets/purl/908336.
@article{osti_908336,
title = {Passive magnetic bearing for a motor-generator},
author = {Post, Richard F},
abstractNote = {Conductive lap windings are interleaved with conventional loops in the stator of a motor-generator. The rotor provides magnetic induction lines that, when rotated, cut across the lap windings and the loops. When the rotor is laterally displaced from its equilibrium axis of rotation, its magnetic lines of induction induce a current in the interleaved lap windings. The induced current interacts with the magnetic lines of induction of the rotor in accordance with Lenz's law to generate a radial force that returns the rotor to its equilibrium axis of rotation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {7}
}

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Works referenced in this record:

Application of permanent magnets in accelerators and electron storage rings (invited)
journal, April 1985