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A Multi-objective Optimization Control Strategy of a Range-Extended Electric Vehicle for the Trip Range and Road Gradient Adaption

  • Connected Automated Vehicles and ITS, Electric, Fuel Cell, and Hybrid Vehicle, Vehicle Dynamics and Control
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Abstract

The road gradient and trip range are of great significance in fuel consumption and emissions of a range-extended electric vehicle (REEV). However, the traditional energy management strategy failed to consider the road gradient. To address this issue, a multi-objective optimization adaptive control strategy is proposed to improve the fuel consumption and emissions of the REEVs. Firstly, a multi-objective optimization adaptive control strategy is developed based the equivalent consumption minimization strategy integrated with adaptive equivalent factor (EF). The EF is updating according to the road slope by using a proportional-integral controller. To investigate the impacts of the road gradient on emissions, the numerical models between road gradient and emissions are established. Furthermore, an optimal torque distribution strategy is proposed according to the weights of fuel and emissions, which realizes the tracking of the SOC trajectory and improves the fuel economy and emission performance of the vehicle. Finally, various strategies are carried out to verify the superiority of the proposed strategy by numerical validations. Compared with the control strategy considered fuel consumption only, the validation results show that the engine CO, HC, and NOx are reduced by 9.47, 2.33, and 4.10%, respectively, while compromising fuel economy by 3.3%.

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Acknowledgements

This work has been financially supported by the National Natural Science Foundation of China (Grant nos. 52272389 and 51505086) and the Natural Science Foundation of Fujian Province, China (Grant no. 2020J01449). And supported by The Open Research Fund of AnHui Province Key Laboratory of Detection Technology and Energy Saving Devices, AnHui Polytechnic University, China (Grant no. JCKJ2021A04).

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  1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, China

    Xinyou Lin, Zhiyong Chen, Jiajin Zhang & Chaoyu Wu

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  1. Xinyou Lin
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  2. Zhiyong Chen
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  4. Chaoyu Wu
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Correspondence to Zhiyong Chen.

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Lin, X., Chen, Z., Zhang, J. et al. A Multi-objective Optimization Control Strategy of a Range-Extended Electric Vehicle for the Trip Range and Road Gradient Adaption. Int.J Automot. Technol. 25, 131–145 (2024). https://doi.org/10.1007/s12239-024-00021-x

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  • DOI: https://doi.org/10.1007/s12239-024-00021-x

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