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ROTOR BASED AIR GAP HEATING FOR AIR DRIVEN TURBINE

  • US 20120056601A1
  • Filed: 09/03/2010
  • Published: 03/08/2012
  • Est. Priority Date: 09/03/2010
  • Status: Active Grant
First Claim
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1. A self-deicing generator apparatus comprising:

  • a stationary assembly including a main generator stator having a plurality of main generator stator windings, and an exciter stator having a plurality of exciter field windings;

    a rotating assembly including a main generator rotor and an exciter rotor mounted to a shaft, with the exciter rotor having a plurality of exciter armature windings disposed coaxially adjacent to the plurality of exciter field windings, and the main rotor having a plurality of main rotor windings disposed coaxially adjacent to the plurality of main stator windings, the main rotor and the main stator separated by an air gap; and

    a deicing circuit operable during a time when the main generator rotor is not being rotated by the shaft, the deicing circuit including a first power source for energizing the plurality of exciter field windings with an alternating input current, to induce an exciter output current in the exciter armature windings that is provided to the main generator windings for producing resistance heating around the main generator rotor windings to melt or sublimate a quantity of ice accumulated in the air gap.

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