Low voltage aircraft engine starting system

Details Low voltage aircraft engine starting system Low voltage aircraft engine starting system

1989-12-11

1991-10-08

Stephan, Steven L.

Electricity: single generator systems

With physical starting and/or stopping of the generator

322 29, 290 31, 290 38R, F02N 1100

Patent

active

050557645

ABSTRACT:
In a system for starting an aircraft turbine from a low voltage direct current power supply, the low voltage power supply is coupled by an invertor to the turbine's a.c. generator. The generator operates as a motor during starting. The invertor is initially coupled directly to the generator during starting, and to the generator via a step-up transformer after the speed of the generator increases. In a preferred embodiment of the invention, the transformer is an autotransformer used to step down the output of the generator when operating as a generator after the turbine has been started.

REFERENCES:
patent: 3908130 (1975-09-01), Lafuze
patent: 4330743 (1982-05-01), Glennon
patent: 4489323 (1984-12-01), Glennon et al.
patent: 4786852 (1988-11-01), Cook
patent: 4841216 (1989-06-01), Okada et al.
patent: 4894553 (1990-01-01), Kaneyuki

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