Open AccessCharacterisation of the electric drive of EV: on‐road versus off‐road method
Author(s) -
Dépature Clément,
Lhomme Walter,
Bouscayrol Alain,
Boulon Loïc,
Sicard Pierre,
Jokela Tommi
Publication year - 2017
Publication title -
iet electrical systems in transportation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.588
H-Index - 26
eISSN - 2042-9746
pISSN - 2042-9738
DOI - 10.1049/iet-est.2016.0060
Subject(s) - automotive engineering , electric cars , engineering , road transport , forensic engineering , transport engineering , environmental science , materials science
For system design, analysis of global performance and energy management of electric vehicles (EVs), it is common to use the efficiency map of electric traction drive. The characterisation of the efficiency map with high accuracy is then an important issue. In this study, an on‐road method and an off‐road method are compared experimentally to determine the efficiency map of electric drive of EVs. The off‐road method requires a dedicated experimental test bed, which is expensive and time consuming. The on‐road method is achieved directly in‐vehicle. Experimental data, recorded during an on‐road driving cycle, are used to determine the efficiency map using non‐intrusive measurements from global positioning system antenna, voltage and current sensors. A versatile experimental setup is used to compare both methods on the same platform. A maximal efficiency difference of 6% is achieved in most of the torque–speed plane. It is shown that, in an energetic point of view, both methods yield similar results.