| 摘要 |
<p>The invention provides an improved alternator system in which a flux-linkage-modulating sleeve (24) 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 (36,38) 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.</p> |
