Advanced Diagnostics of Aircraft Electrical Generators

Document Number: 2008-01-2923

Date Published: November 2008

Author(s):
Freeman Rufus - Global Technology Connection Inc.
Seungkoo Lee - Global Technology Connection Inc
Ash Thakker - Global Technology Connection Inc.
Sean Field - Naval Air Systems Command
Nathan Kumbar - Naval Air Systems Command

Abstract:
The electrical and mechanical failures (such as bearing and winding failures) combine to cause premature failures of the generators, which become a flight safety issue forcing the crew to land as soon as practical. Currently, diagnostic / prognostic technologies are not implemented for aircraft generators where repairs are time consuming and its costs are high. This paper presents the development of several algorithms to differentiate between these failure modes and normal aircraft operational modes, determine the degree of damage and remaining life of a generator. P-3 generator data (vibrations & phase voltages/currents) were collected for a seeded bearing failure involving lubrication defects in main bearing system. The results show that the frequency domain analysis of the generator¿s phase voltage can be used to detect its general health and impending bearing failures.

File Size: 807K
Product Status: In Stock

Included in: V117-2008

See other papers presented at Power Systems Conference, November 2008, Seattle, WA, USA, Session: Health, Monitoring, Prognostics and Diagnostics for Power (Part 1 of 2)

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