An Investigation of Electric Motor Drive Characteristics for EV and HEV Propulsion Systems Conference Paper uri icon


  • The recent growing interest in electric vehicle (EV) and hybrid electric vehicle (HEV) demands for an efficient, reliable and economical motor drive for electric propulsion. However, searching for a suitable traction motor becomes quite involved when vehicle dynamics and system architecture are considered. This paper makes an in-depth investigation on two highly important traction motor characteristics, extended speed range-ability and energy efficiency, from vehicular system perspective. The influences of these two motor drive features on a pure EV, a post-transmission, and two pre-transmission parallel HEV with 20% and 50% hybridization are studied in this paper. Two EV-HEV software packages 'V-ELPH' developed by Texas A&M University and 'ADVISOR' from NREL are used for simulation purposes. Based on the results in this paper, a systematic method is developed regarding the selection of traction drives for EV and HEV propulsion systems. Copyright 2000 Society of Automotive Engineers, Inc.

name of conference

  • SAE Technical Paper Series

published proceedings

  • SAE Technical Papers

author list (cited authors)

  • Rahman, Z., Ehsani, M., & Butler, K. L.

citation count

  • 70

complete list of authors

  • Rahman, Z||Ehsani, M||Butler, KL

publication date

  • December 2000