Frontiers of Mechanical Engineering
>> 2020,
Volume 15,
Issue 1
doi:
10.1007/s11465-019-0546-x
RESEARCH ARTICLE
Evaluation of regenerative braking based on single-pedal control for electric vehicles
. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.. Automotive Engineering Institute, Guangzhou Automobile Group Co. Ltd., Guangzhou 511434, China
Accepted: 2019-07-26
Available online: 2019-07-26
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Abstract
More than 25% of vehicle kinetic energy can be recycled under urban driving cycles. A single-pedal control strategy for regenerative braking is proposed to further enhance energy efficiency. Acceleration and deceleration are controlled by a single pedal, which alleviates driving intensity and prompts energy recovery. Regenerative braking is theoretically analyzed based on the construction of the single-pedal system, vehicle braking dynamics, and energy conservation law. The single-pedal control strategy is developed by considering daily driving conditions, and a single-pedal simulation model is established. Typical driving cycles are simulated to verify the effectiveness of the single-pedal control strategy. A dynamometer test is conducted to confirm the validity of the simulation model. Results show that using the single-pedal control strategy for electric vehicles can effectively improve the energy recovery rate and extend the driving range under the premise of ensuring safety while braking. The study lays a technical foundation for the optimization of regenerative braking systems and development of single-pedal control systems, which are conducive to the promotion and popularization of electric vehicles.
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