HYBRID MAGNETIC BEARING

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)

Application Number:

PCT/JP2006/317143

Publication Date:

May 03, 2007

Filing Date:

August 30, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

IWAKI CO LTD (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: