Title:
HYBRID MAGNETIC BEARING
Document Type and Number:
WIPO Patent Application WO/2007/049396
Kind Code:
A1
Abstract:
A hybrid magnetic bearing excellent in controllability in which higher rigidity,
higher efficiency, and reduction in size can be achieved. In the hybrid magnetic
bearing having a rotor rotating while being supported under noncontact state
by controlling magnetic force of a plurality of electromagnets and permanent
magnets, the electromagnet is formed by winding a control coil around cores in
each of which a main pole and a commutating pole provided with a permanent magnet
for commutating pole are allowed to project in the radial or axial direction of
the rotor substantially in parallel at a predetermined interval. With regard
to a magnetic bearing in the radial direction, two electromagnets are arranged
oppositely and substantially horizontally while holding the rotor between
them, the rotor and the main and commutating poles are arranged to have a predetermined
gap, and a permanent magnet is provided between the main poles of adjacent electromagnets.
With regard to a magnetic bearing in the axial direction, two electromagnets
are arranged in parallel and substantially horizontally, the rotor and the main
and commutating poles are arranged to have a predetermined gap, and a permanent
magnet is provided between the main poles of adjacent electromagnets.
Inventors:
ONUMA HIROYUKI (JP)
MASUZAWA TORU (JP)
OKADA YOHJI (JP)
MASUZAWA TORU (JP)
OKADA YOHJI (JP)
Application Number:
PCT/JP2006/317143
Publication Date:
May 03, 2007
Filing Date:
August 30, 2006
Export Citation:
Assignee:
IWAKI CO LTD (JP)
ONUMA HIROYUKI (JP)
MASUZAWA TORU (JP)
OKADA YOHJI (JP)
ONUMA HIROYUKI (JP)
MASUZAWA TORU (JP)
OKADA YOHJI (JP)
International Classes:
F16C32/04
Foreign References:
JP2002512333A | 2002-04-23 | |||
JPH11101234A | 1999-04-13 | |||
JP2001041238A | 2001-02-13 | |||
JP2005121157A | 2005-05-12 | |||
JP2005121157A | 2005-05-12 | |||
JP2001041238A | 2001-02-13 | |||
JPH1110234A | 1999-01-19 |
Other References:
See also references of EP 1942282A4
Attorney, Agent or Firm:
OSUGA, Yoshiyuki (Nibancho Bldg. 8-20, Nibanch, Chiyoda-ku Tokyo 84, JP)
Download PDF:
Previous Patent: ELECTRIC CONNECTOR
Next Patent: BASE STATION APPARATUS AND BASE STATION APPARATUS CONTROL METHOD
Next Patent: BASE STATION APPARATUS AND BASE STATION APPARATUS CONTROL METHOD