Design of Ultra-High-Power-Density Machine Optimized for Future Aircraft.

摘要

The NASA Glenn Research Center's Structural Mechanics and Dynamics Branch is developing a compact, nonpolluting, bearingless electric machine with electric power supplied by fuel cells for future 'core- electric' aircraft with specific power in the projected range of 50 hp /lb, whereas conventional electric machines generate usually 0.2 hp /lb. The use of such electric drives for propulsive fans or propellers depends on the successful development of ultra-high-power-density machines. One possible candidate for such ultra-high-power-density machines, a round-rotor synchronous machine with an engineering current density as high as 20,000 A/sq cm, was selected to investigate how much torque and power can be produced.