ELECTRONICALLY COMMUTATED DC MOTORS FOR ELECTRIC VEHICLES

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

• TRT Terms: Design; Direct current motors; Electric power transmission; Electric vehicles; Electronic equipment; Feasibility analysis; Magnets; Motors; Performance; Performance tests; Transistors
• Uncontrolled Terms: Experimental data
• Old TRIS Terms: Electronic devices; Performance testing; Power conditioning circuits; Power systems
• Subject Areas: Design; Energy; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety; I95: Vehicle Inspection;

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