Title :
High performance electrical power systems for unmanned airborne vehicles
Author :
Defreitas, Dennis M.
Author_Institution :
Adv. Eng. Simmonds Precision, Norwich, NY, USA
fDate :
10/19/1988 12:00:00 AM
Abstract :
It is noted that unmanned vehicles initially draw power from the launch platform for preflight diagnostics, go/no-go status, and the programming of an initial flight plan. The onboard power system consists of two sources: batteries are used for preflight checkout, postlaunch sequences, and emergency power for autorecovery sequences; and a generator/regulator system is utilized after launch to supply power for all avionics modules. System trade studies on the development of high-performance electrical power systems are discussed. Test results are then presented on four programs: phase control with shaft position sensing; a high-frequency resonant converter, which lowers electromagnetic emissions and system size and weight by using high-frequency sinusoidal resonance as the power conversion vehicle; a hybrid shunt regulator; and switched reluctance systems, a solution for high-temperature (>500°F) power systems on next generation high-performance turbine engines
Keywords :
aircraft; alternators; phase control; power convertors; power systems; 500 degF; EM emissions reduction; alternators; autorecovery sequences; batteries; electrical power systems; emergency power; generator/regulator system; high temperature power systems; high-frequency resonant converter; high-performance turbine engines; hybrid shunt regulator; phase control; postlaunch sequences; preflight checkout; shaft position sensing; switched reluctance systems; unmanned airborne vehicles; Aerospace electronics; Batteries; Emergency power supplies; Hybrid power systems; Power generation; Power systems; Regulators; Resonance; System testing; Vehicles;
Conference_Titel :
Southern Tier Technical Conference, 1988., Proceedings of the 1988 IEEE
Conference_Location :
Binghamton, NY
DOI :
10.1109/STIER.1988.95465
