Hybrid electric bus regenerative braking parallel control strategy optimization and simulation

For the parallel regenerative braking system of a domestic large-sized bus company's single axis paralleled hybrid electric buses with ISG(Integrated starter generator) motor and two clutch,aiming at making the efficiency of the charging system(motor and battery) optimization,a set of regenerative braking control strategy was controlled.For approaching ideal "I" curve to receive the best ground sticking rate,the friction brake ratio of original car was adjusted and the dynamic ratio was optimized between the front and back wheels with the adaptive fuzzy PID algorithm.Strategy model simulation was carried out with the joint simulation model built by Simulink and Cruise.And the in-the-loop simulation was performed with the RCP rapid prototype in-the-loop simulation platform that was constituted by DSPACE company's Autobox system and the HEV bus.The results show that the optimal regenerative braking control strategy makes the performance of brake better and obtains about 15% of the feedback energy.