On the Investigation of Energy Efficient Torque Distribution Strategies through a Comprehensive Powertrain Model

SALAMONE, Sara, LENZO, Basilio, LUTZEMBERGER, Giovanni, BUCCHI, Francesco and SANI, Luca (2021). On the Investigation of Energy Efficient Torque Distribution Strategies through a Comprehensive Powertrain Model. Sustainability, 13 (8).

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Abstract

In electric vehicles with multiple motors, the torque at each wheel can be controlled independently, offering significant opportunities for enhancing vehicle dynamics behaviour and system efficiency. This paper investigates energy efficient torque distribution strategies for improving the operational efficiency of electric vehicles with multiple motors. The proposed strategies are based on the minimisation of power losses, considering the powertrain efficiency characteristics, and are easily implementable in real-time. A longitudinal dynamics vehicle model is developed in Simulink/Simscape environment, including energy models for the electrical machines, the converter, and the energy storage system. The energy efficient torque distribution strategies are compared with simple distribution schemes under different standardised driving cycles. The effect of the different strategies on the powertrain elements, such as the electric machine and the energy storage system, are analysed. Simulation results show that the optimal torque distribution strategies provide a reduction in energy consumption of up to 5.5% for the case-study vehicle compared to simple distribution strategies, also benefiting the battery state of charge.

Item Type:	Article
Additional Information:	** From MDPI via Jisc Publications Router ** Licence for this article: https://creativecommons.org/licenses/by/4.0/ **Journal IDs: eissn 2071-1050 **History: published 20-04-2021; accepted 15-04-2021
Uncontrolled Keywords:	electric vehicles, energy efficiency, torque allocation, 4-wheel drive, power loss minimisation, vehicle energy model
Identification Number:	https://doi.org/10.3390/su13084549
SWORD Depositor:	Colin Knott
Depositing User:	Colin Knott
Date Deposited:	27 Apr 2021 10:13
Last Modified:	27 Apr 2021 10:15
URI:	https://shura.shu.ac.uk/id/eprint/28545

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