Since 1977, approximately $20 million has been spent to define the performance characteristics of commercially available propulsion components, to identify important interactions among components of a propulsion system and between the system and the traction battery, and to develop advanced components and systems. A unique test facility, the road load simulator, was built at the NASA-Lewis research center which permits accurate, reproducible, cost effective testing of propulsion systems under a wide variety of simulated vehicle and traffic environments. This paper describes progress in the development of complete electric vehicle propulsion systems, and presents the results of tests on the road load simulator of two such systems representative of advanced dc and ac drive technology. For the covering abstract of the conference see IRRD 267101.
Samenvatting