An Investigation of Electric Motor Drive Characteristics for EV and HEV Propulsion Systems Academic Article 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.

published proceedings

  • SAE 2000 Transactions Journal of Passenger Cars - Mechanical Systems

author list (cited authors)

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

citation count

  • 68

complete list of authors

  • Rahman, Z||Ehsani, M||Butler-Purry, KL

publication date

  • 2000