Experimental Evaluation and Modeling of a Regenerative Braking System for an Electric Motorcycle

Abstract

This research presents an experimental evaluation, modeling and simulation of a regenerative braking system for an electric motorcycle based on the VinFast Klara S platform equipped with a 1.2 kW brushless direct current motor. An experimental test bench was established to examine the effects of battery state of charge and braking power on energy recovery efficiency. The results indicate that the maximum recovery efficiency reached 22.5% at a braking power of 200 W, within an optimal state of charge range of (50-60)%. A Matlab/Simulink model was developed and validated using experimental data to assess the impact of the RBS on the motorcycle’s driving range. Under the proposed urban driving cycle, the driving range per full charge increased from 63.64 km to 67.06 km, corresponding to an improvement of 5.4%. The study also clarified the influence of the rectifier-boost converter efficiency, battery internal resistance and proposed directions to enhance the performance of regenerative braking systems for small electric motorcycles.