Electrical aircraft engine start and generating system

Details Electrical aircraft engine start and generating system Electrical aircraft engine start and generating system

1980-07-17

1982-05-18

Hickey, Robert J.

Electricity: single generator systems

With physical starting and/or stopping of the generator

290 38R, 290 46, 318138, 322 29, F02N 1104, F02N 1114

Patent

active

043307434

ABSTRACT:
This invention relates to electrical aircraft engine start and generating system for use in an aircraft having an engine driven torque converter coupled to an alternator which provides AC power for conversion to DC and AC power. The system includes a reversible AC to DC converter controllably electrically coupled to the alternator and a controller unit to provide DC power in a generating mode. The reversible AC to DC converter is capable of receiving externally supplied DC power to be converted to AC power to drive the alternator as a motor in a start mode. A DC to AC converter is controllably electrically coupled to the controller unit and the DC power output during the generating mode. The reversible DC to AC converter in the start mode is mutually controllably electrically coupled to the externally supplied DC power. The controller unit and the alternator cooperate to provide a controlled AC power output to be delivered to the alternator to bring the alternator operating as a motor up to operating speed, whereupon the reversible DC to AC converter responds to the external DC power and is electrically coupled to the alternator to drive the alternator as a motor to deliver rotary power through the torque converter to start the aircraft engine.

REFERENCES:
patent: 3809914 (1974-05-01), Kilgore et al.
patent: 3902073 (1975-08-01), Lafuze
patent: 3908161 (1975-09-01), Messenger

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