Table of Contents
International Journal of Vehicular Technology
Volume 2013, Article ID 398361, 5 pages
Research Article

Improving Energy Conversion Efficiency by means of Power Splitting in Dual Drive Train EV Applications

imk automotive GmbH, Annaberger Straße 73, 09126 Chemnitz, Germany

Received 6 March 2013; Revised 7 July 2013; Accepted 21 July 2013

Academic Editor: Lingyang Song

Copyright © 2013 Michael A. Roscher et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The limited amount of energy stored on board of battery electric vehicles (BEV) spurs research activities in the field of efficiency optimization for electric drive train applications in order to achieve an enhanced mileage. In this work a control method for BEV applications with two drive trains (e.g., one at the front and one at the rear axle) is presented. Herein, a simple optimization algorithm is introduced enabling to operate the two drives with different torque values, depending on the instantaneous operation point, leading to a reduction of apparent power losses on board. Simulations on a virtual BEV yield a decrease in the cumulated energy consumptions during typical BEV operation, leading to an increase in the achievable mileage.