NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsVariable-Speed Induction Motor Drives for Aircraft Environmental Control CompressorsNew, 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/NPD SBIR Program to drive both types of ECS compressors. Previous variable-speed induction motor/controller system developments and publications have primarily focused on field-oriented control, with large transient reserve power, for maximum acceleration and optimum response in actuator and robotics systems. 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. It starts with the creation of a new set of controller requirements. In response to those requirements, new control algorithms are being developed and implemented in an embedded computer, which is integrated into the motor controller closed loop. Buffered logic outputs are used to drive the power switches in a resonant-technology, power processor/motor-controller, at switching/resonant frequencies high enough to support efficient high-frequency induction motor operation at speeds up to 50,000-RPADocument ID19960038250Acquisition SourceLegacy CDMSDocument TypeConference PaperAuthorsMildice, J. W.*(Motive Power Development San Diego, CA United States)*Hansen, I. G.*(Motive Power Development San Diego, CA United States)*Schreiner, K. E.*(Motive Power Development San Diego, CA United States)*Roth, M. E.*(NASA Cleveland, OH United States)*Date AcquiredSeptember 6, 2013Publication DateJuly 1, 1996Subject CategoryElectronics And Electrical EngineeringReport/Patent NumberNAS 1.15:107261NASA-TM-107261E-10325Meeting InformationMeeting: Intersociety Energy Conversion Engineering ConferenceLocation: Washington, DCCountry: United StatesStart Date: August 11, 1996End Date: August 16, 1996Sponsors:Institute of Electrical and Electronics Engineers,American Society of Mechanical Engineers,Society of Automotive Engineers, Inc.,American Inst. of Chemical Engineers,American Inst. of Aeronautics and Astronautics,American Nuclear SocietyAccession Number96N30730Funding Number(s)CONTRACT_GRANT: NAS3-27549PROJECT: RTOP 244-02-02Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19960038250.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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