Characterisation of the electric drive of EV: on‐road versus off‐road method. Issue 3 (1st September 2017)

• Record Type: Journal Article
• Authors: Dépature, Clément; Lhomme, Walter; Bouscayrol, Alain; Boulon, Loïc; Sicard, Pierre; Jokela, Tommi
• Is Part Of: IET electrical systems in transportation. Volume 7:Issue 3(2017)
• Page Start: 215
• Page End: 222
• Publication Date: 2017-09-01
• Subjects: electric vehicles -- energy management systems -- electric drives -- traction; EV electric drive characterisation -- on‐road method -- off‐road method -- electric vehicle energy management -- EV energy management -- electric traction drive -- on‐road driving cycle -- efficiency map -- nonintrusive measurements -- global positioning system antenna -- voltage sensor -- current sensor -- maximal efficiency difference -- torque‐speed plane -- efficiency 6 percent; Electric vehicles -- Periodicals; Electricity in transportation -- Periodicals; 621.3105
• DOI: 10.1049/iet-est.2016.0060
• Languages: English
• ISSNs: 2042-9738

Abstract

Abstract : 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.