The preliminary results of simulated electric vehicle, chopper, speed controller discharge of a battery show energy output losses at up to 25 percent compared to constant current discharges at the same average discharge current of 100 A. These energy losses are manifested as temperature rises during discharge, amounting to a two-fold increase for a 400-A pulse compared to the constant current case. Because of the potentially large energy inefficiency, the results suggest that electric vehicle battery/speed controller interaction must be carefully considered in vehicle design.

  • Supplemental Notes:
    • Misc-Revised. Conf-Proposed for Presentation at the 13TH Intersoc. Energy Conversion Eng. Conf., San Diego, Calif., 20-25 Aug. 1978.
  • Corporate Authors:

    Department of the Navy

    The Pentagon
    Washington, DC  United States  20350
  • Authors:
    • Cataldo, R L
  • Publication Date: 1978

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00181681
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-TM-73834-REV
  • Contract Numbers: EC-77-A-31-1044
  • Files: TRIS
  • Created Date: Oct 31 1979 12:00AM