MAGNETIC LEVITATION CONTROL DEVICE AND HYBRID TYPE MAGNETIC BEARING

WIPO Patent Application WO/2011/007544

A1

A bias magnetic flux (10) is formed in such a way as to pass through an electromagnetic core (1) of an electromagnet (20), and furthermore, a bypass magnetic path (9A) constituting a magnetic path for a control magnetic flux (9) is formed in parallel with a permanent magnet (6), with the result that a bypass magnetic path (9A) is magnetized in such a direction as to prevent the passage of the bias magnetic flux (10). Due to this arrangement, even if the permanent magnet (6) and the electromagnet (20) are installed in positions where the magnetic flux of the permanent magnet (6) and that of the electromagnet (20) are mutually superimposed on each other, still the control magnetic flux (9) formed by the electromagnet (20) passes through the bypass magnetic path (9A), thereby permitting the loss of the control magnetic flux (9) to be curbed. By virtue of the above, it is possible to install the permanent magnet (6) and the electromagnet (20) in positions where the magnetic flux of the permanent magnet (6) and that of the electromagnet (20) are mutually superimposed on each other, leading to miniaturization of the pertinent device.

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MASUZAWA TORU (JP)
SASAKI EISUKE (JP)

PCT/JP2010/004512

January 20, 2011

July 12, 2010

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UNIV IBARAKI (JP)
MASUZAWA TORU (JP)
SASAKI EISUKE (JP)

F16C32/04

JP2007120635A	2007-05-17
JP2005121157A	2005-05-12
JP2007009949A	2007-01-18
JP2003087909A	2003-03-20
JP2003021140A	2003-01-24

HORI, Shiroyuki et al. (JP)
Shiroyuki Hori (JP)

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