H - Electricity – 02 – K
Patent
H - Electricity
02
K
322/30
H02K 21/00 (2006.01) H02K 21/16 (2006.01)
Patent
CA 1270297
REGULATABLE PERMANENT MAGNET ALTERNATOR Abstract of the Disclosure The invention provides an improved alternator system in which a flux-linkage-modulating sleeve rotates with the rotor in the magnetic field between the stator and the rotor rotated by an engine-driven shaft, the sleeve being formed of alternating ferro-magnetic segments separated by nonmagnetic segments, the ferro-magnetic segments having the same angular separation as and being alignable with the poles of the stator, the angular relationship between the sleeve and the rotor being adjustable from a rotor-aligned position in which the ferro-magnetic segments are aligned with the poles of the rotor to a non-rotor-aligned position by the drag effect of a retarding assembly axially connected to one end of the sleeve and connected in a cranking relationship to the shaft by elastic connections that urge the sleeve into its rotor-alignment position during operation of the alternator, the drag effect of the retarding assembly being enhancable by an error signal developed in a voltage comparator as a function of the difference between a desired voltage output and the voltage produced by the alternator, thereby stretching the elastic connections and adjusting the sleeve into one of a continuous range of non-aligned positions, providing a more constant voltage output during load and speed variations.
552531
Moffat & Co.
Sadvary John W.
Simmonds Precision Products Inc.
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