Variable-speed induction motor drives for aircraft environmental control compressors
- Motive Power Development, San Diego, CA (United States)
- National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
New, more-efficient designs for aircraft jet engines are not capable of supplying the large quantities of bleed air necessary to provide pressurization and air conditioning for the environmental control systems (ECS) of the next generation of large passenger aircraft. System analysis and engineering have determined that electrically-driven ECS can help to maintain the improved fuel efficiencies; and electronic controllers and induction motors are now being developed in a NASA/MPD SBIR Program to drive both types of ECS compressors. An important operational requirement for these applications is variable speed/load operation; and total maximum power outputs are under 200-kW for carbon pressurization and 100-kW for vapor cycle compressors, divided among four redundant units in a typical, 300 passenger, wide-body design. Typical speeds for full output of aircraft centrifugal compressors are in the 50,000-RPM range. This performance is now within reach for modern, resonant-technology, power processors and for improved induction motors. The application area addressed herein is characterized by slowly-changing inputs and outputs, small reserve power capability for acceleration, and optimization for maximum efficiency. This paper therefore focuses on the differences between this case and the optimum response case, and shows the development of this new motor/controller approach.
- OSTI ID:
- 474444
- Report Number(s):
- CONF-960805-; TRN: IM9723%%337
- Resource Relation:
- Conference: 31. intersociety energy conversion engineering conference, Washington, DC (United States), 9-14 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 31. intersociety energy conversion engineering conference. Volume 1: Aerospace power systems, aerospace technologies; Chetty, P.R.K.; Jackson, W.D.; Dicks, E.B. [eds.]; PB: 681 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Second law analysis of extra power requirements for a cascade of industrial compressors
Energy efficient ECS powered by a variable voltage/variable frequency power system