Magnetic bearing cell with rotor and stator
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United States of America Patent
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Mar 17, 1998
Grant Date -
N/A
app pub date -
Sep 13, 1995
filing date -
Jan 16, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a rotationally symmetrical.sup.1 magnetic bearing cell (1) with a rotor (2) arranged to rotate about the central axis (10) of the cell (1) and having a shaft (4) and at least two axially magnetised permanent magnetic rings (5, 6, 30) fitted an axial distance apart on the shaft and with a stator (3) having pole components (12, 13, 16, 17) and two annular coils (14, 15) associated with the rotor end faces; to improve the radial rigidity without increasing active control complexity, it is proposed that pole components (26, 27, 38) of magnetically conductive material be provided for the peripheral regions of the two axially outer permanent magnet rings (5, 6 or 5, 30) to direct the magnetic flux generated by the annular coils (14, 15) into two substantially independent magnetic flux circuits (28, 29). .sup.1 Translator's: note The German text reads 'aufgebautet'. This is grammatically not correct. Instead the German text should read 'aufgebaute'. The latter has been assumed for the translation.
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