Title :
Advanced power converters for More Electric Aircraft applications
Author :
Homeyer, W.G. ; Bowles, E.E. ; Lupan, S.P. ; Walia, P.S. ; Maldonado, M.A.
Author_Institution :
Gen. Atomics, San Diego, CA, USA
fDate :
27 Jul-1 Aug 1997
Abstract :
A DC-DC converter and a DC-AC inverter are under development for More Electric Aircraft (MEA) use. They are both highly compact and are designed to operate from 270 VDC input power and produce output power that meets requirements for fighter aircraft, including compliance with MIL-STD-704E and MIL-STD-461D guidelines. Both units are designed to be cooled with Poly Alpha Olefin (PAO) at 30°C maximum inlet temperature and to operate for at least 30 s after a loss of coolant flow before shutting down. Both units are designed to withstand 20 Gs shock loadings and random vibration loadings up to 0.04 Grms 2/Hz for the DC-DC converter and 0.36 Grms2 /Hz for the DC-AC inverter. The reliability goal is 25000 hour mean time between failures (MTBF). Both units incorporate under/overvoltage, short circuit, and over temperature protection. The DC-AC inverter also has over/under frequency, DC content, waveform distortion, and zero voltage content protection. The paper describes the design of both units and the resulting performance. The results of tests on both units are summarized
Keywords :
DC-AC power convertors; DC-DC power convertors; invertors; military aircraft; overvoltage protection; rectifying circuits; resonant power convertors; switching circuits; testing; 11.5 in; 115 V; 120 V; 120 kHz; 18.2 lb; 270 V; 29 V; 30 C; 400 Hz; 5 in; 5.5 in; 5.6 kW; 8 kVA; 8.9 lb; 87 percent; 90 percent; DC content protection; DC voltage output capacitor; DC-AC inverter; DC-DC converter; FET; IGBT; MIL-STD-461D; MIL-STD-704E; More Electric Aircraft; Poly Alpha Olefin cooling; Schottky diodes; ferrite core; field effect transistors; fighter aircraft; high frequency series resonant input inverter; input inverters; insulated gate bipolar transistors; maximum inlet temperature; mean time between failures; minimal filtering requirements; multi-step approach; output sine wave; over frequency protection; over temperature protection; overvoltage protection; pulse width modulation; random vibration loadings; rectifier; reliability; resonant current energy transfer; shock loadings; short circuit protection; small transformer; switching technique; thin planar copper windings; three phase power; total harmonic distortion; under frequency protection; under/over voltage protection; waveform distortion protection; zero current switching; zero voltage content protection; Coolants; DC-DC power converters; Electric shock; Guidelines; Inverters; Military aircraft; Power generation; Protection; Temperature; Voltage control;
Conference_Titel :
Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-4515-0
DOI :
10.1109/IECEC.1997.659256
