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Title: Ultra-high speed permanent magnet axial gap alternator with multiple stators

Abstract

An ultra-high speed, axial gap alternator that can provide an output to a plurality of loads, the alternator providing magnetic isolation such that operating conditions in one load will not affect operating conditions of another load. This improved alternator uses a rotor member disposed between a pair of stator members, with magnets disposed in each of the rotor member surfaces facing the stator members. The magnets in one surface of the rotor member, which alternate in polarity, are isolated from the magnets in the other surface of the rotor member by a disk of magnetic material disposed between the two sets of magents. In the preferred embodiment, this disk of magnetic material is laminated between two layers of non-magnetic material that support the magnets, and the magnetic material has a peripheral rim that extends to both surfaces of the rotor member to enhance the structural integrity. The stator members are substantially conventional in construction in that equally-spaced and radially-oriented slots are provided, and winding members are laid in these slots. A unit with multiple rotor members and stator members is also described.

Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
867725
Patent Number(s):
4996457
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ultra-high; speed; permanent; magnet; axial; gap; alternator; multiple; stators; provide; output; plurality; loads; providing; magnetic; isolation; operating; conditions; load; affect; improved; rotor; disposed; pair; stator; magnets; surfaces; facing; surface; alternate; polarity; isolated; disk; material; sets; magents; preferred; embodiment; laminated; layers; non-magnetic; support; peripheral; rim; extends; enhance; structural; integrity; substantially; conventional; construction; equally-spaced; radially-oriented; slots; provided; winding; laid; unit; described; operating conditions; permanent magnet; preferred embodiment; material disposed; magnetic material; structural integrity; operating condition; non-magnetic material; axial gap; providing magnetic; ultra-high speed; gap alternator; multiple stator; /310/

Citation Formats

Hawsey, Robert A., and Bailey, J. Milton. Ultra-high speed permanent magnet axial gap alternator with multiple stators. United States: N. p., 1991. Web.
Hawsey, Robert A., & Bailey, J. Milton. Ultra-high speed permanent magnet axial gap alternator with multiple stators. United States.
Hawsey, Robert A., and Bailey, J. Milton. Tue . "Ultra-high speed permanent magnet axial gap alternator with multiple stators". United States. https://www.osti.gov/servlets/purl/867725.
@article{osti_867725,
title = {Ultra-high speed permanent magnet axial gap alternator with multiple stators},
author = {Hawsey, Robert A. and Bailey, J. Milton},
abstractNote = {An ultra-high speed, axial gap alternator that can provide an output to a plurality of loads, the alternator providing magnetic isolation such that operating conditions in one load will not affect operating conditions of another load. This improved alternator uses a rotor member disposed between a pair of stator members, with magnets disposed in each of the rotor member surfaces facing the stator members. The magnets in one surface of the rotor member, which alternate in polarity, are isolated from the magnets in the other surface of the rotor member by a disk of magnetic material disposed between the two sets of magents. In the preferred embodiment, this disk of magnetic material is laminated between two layers of non-magnetic material that support the magnets, and the magnetic material has a peripheral rim that extends to both surfaces of the rotor member to enhance the structural integrity. The stator members are substantially conventional in construction in that equally-spaced and radially-oriented slots are provided, and winding members are laid in these slots. A unit with multiple rotor members and stator members is also described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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