A motor development program to explore the feasibility of electronically commutated dc motors (also known as brushless) for electric cars is described. Two different design concepts and a number of design variations based on these concepts are discussed. One design concept is based on a permanent magnet, medium-speed, machine rated at 7000 to 9000 rpm and powered via a transistor-inverter power conditioner. The other concept is based on a permanent magnet, high-speed, machine rated at 22,000 to 26,000 rpm and powered via a thyristor-inverter power conditioner. Test results are presented for a medium-speed motor and for a high-speed motor each of which have been fabricated using samarium-cobalt permanent magnet material. (ERA citation 06:012545)

  • Supplemental Notes:
    • Society of Automotive Engineers international engineering congress and exposition, Detroit, MI, USA, 23 Feb 1981.
  • Corporate Authors:

    Department of the Navy

    The Pentagon
    Washington, DC  United States  20350

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Maslowski, E A
  • Publication Date: 1981

Media Info

  • Pagination: 18 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00337437
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CONF-810206-6, NASA-TM-81654
  • Contract Numbers: AI01-77CS51044
  • Files: TRIS
  • Created Date: Aug 15 1981 12:00AM