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MODULATION CONTROL OF POWER GENERATION SYSTEM

  • US 20090008936A1
  • Filed: 09/16/2008
  • Published: 01/08/2009
  • Est. Priority Date: 09/20/2006
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • at least one alternator drivingly connected to a prime mover to produce an alternator alternating current, the alternator having a rotor, a stator assembly and a saturation apparatus, the stator assembly having at least one stator winding for providing said alternator alternating current, the stator winding having at least a pair of legs serially connected with one another, the legs spaced apart circumferentially from one another relative to the stator assembly, the rotor and stator assembly co-operating to define at least two rotor magnetic circuits for conducting rotor magnetic flux, one of the rotor magnetic circuits encircling a first portion of one of said legs of the stator winding and another one of the rotor magnetic circuits encircling a first portion of the other of said legs of the stator winding, the stator assembly defining at least a pair of secondary magnetic circuits for conducting magnetic flux, one of the secondary magnetic circuits encircling a second portion of one of said legs of the stator winding and another one of the secondary magnetic circuits encircling a second portion of the other of said legs of the stator winding, the secondary magnetic circuits being remote from the rotor magnetic circuits, the saturation apparatus associated with at least a portion of each secondary magnetic circuit, said at least a portion of each secondary magnetic circuit being remote from the rotor magnetic circuits, the saturation apparatus adapted to selectively magnetically saturate said portion of each secondary magnetic circuit at a selected frequency, the saturation apparatus adapted to magnetically saturate one of the secondary magnetic circuits in the same direction as magnetic flux circulating that secondary magnetic circuit while magnetically saturating another one of secondary magnetic circuits in the direction opposite to magnetic flux circulating that secondary magnetic circuit;

    AC-to-DC conversion circuitry connected to the stator winding adapted to convert the alternator alternating current into direct current; and

    DC-to-AC conversion circuitry connected to the AC-to-DC conversion circuitry and adapted to convert the direct current into an alternating current output having an output frequency proportional to the selected frequency.

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