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Method and system for facilitating no-break power transfer

  • US 7,528,499 B2
  • Filed: 04/03/2008
  • Issued: 05/05/2009
  • Est. Priority Date: 09/04/2003
  • Status: Expired due to Fees
First Claim
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1. A method of facilitating power transfer between a main engine and an auxiliary power unit (APU), comprising:

  • obtaining a main engine generator frequency;

    determining a target APU speed that will generate an APU generator frequency that is the same as the main engine generator frequency;

    adjusting an actual APU speed to the target APU speed;

    conducting the power transfer between the main engine and the APU;

    determining a maximum APU load; and

    adjusting an aircraft electrical load requirement until the aircraft electrical load falls below the maximum APU load.

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