Method and system for facilitating no-break power transfer

Details Method and system for facilitating no-break power transfer Method and system for facilitating no-break power transfer

2003-09-04

2008-08-26

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

C307S068000, C307S073000

Reexamination Certificate

active

07417337

ABSTRACT:
An improved method and system for facilitating no-break power transfer between an APU and a main engine includes determining a required APU speed for conducting power transfer based on various APU operating parameters, such as engine speed, fuel, environmental temperature, etc. The APU controller then adjusts the APU speed up or down to the required APU speed. Communication between an aircraft computer and the APU controller may also be provided so that operational data can be exchanged to adjust the electrical load of the aircraft below a maximum load threshold set by the APU, avoiding overloading of the APU during power transfer. By exchanging operational data between the APU controller and the aircraft computer, both the APU and the electrical load can be adjusted to optimize no-break power transfer despite varying APU operating conditions and main engine generator frequencies.

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