AN ASSESSMENT OF FLYWHEEL ENERGY STORAGE IN ELECTRIC VEHICLES

The analysis and design of a hybrid drive for a 7.5-tonne (8.4 ton) urban delivery van are described. The drive consists of a flywheel for vehicle acceleration, and a battery pack and compound-wound direct current motor for steady-state power. The motor output is automatically regulated and the continuously variable transmission (CVT) is controlled to match the flywheel to the vehicle demand. Various types of CVT are considered, and their relative merits compared. It is concluded that rolling friction drives offer the best solution for vehicle applications. Digital simulation results are presented comparing the hybrid with an equivalent electric drive for a standard vehicle duty cycle. The effect of varying the flywheel capacity and regenerative braking benefits are examined. It is shown that the hybrid drive offers a significant increase in vehicle range.

• Supplemental Notes:
  • Presented at the SAE West Coast International Meeting, Los Angeles, 11-14 August 1980. Research supported by Science Research Council.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • BURROWS, C R
  • Price, G
  • Perry, F G
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Continuously variable transmissions; Electric vehicles; Energy storage systems; Flywheels; Hybrid vehicles; Regenerative braking; Vans; Vehicle range
• Subject Areas: Energy; Safety and Human Factors;

Filing Info

• Accession Number: 00376913
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE-800885, HS-030 095
• Files: HSL, USDOT
• Created Date: Aug 30 1983 12:00AM