Regenerative Braking Control Strategy with Real-Time Wavelet Transform for Composite Energy Buses

In order to meet the safety requirements of automobile braking, improve braking energy recovery rate pure electric buses and increase their driving range, maximum regenerative force that motor can provide is used determine front rear wheel friction distribution curve. A parallel control strategy, A, proposed make full use performance. Aiming at problems low power density short cycle life with a single battery, composite system composed batteries supercapacitors designed, an alternative D, using real-time wavelet transform proposed. The required decomposed into high-frequency components low-frequency by control, in which borne supercapacitor avoid impact on battery. simulation model was created MATLAB/Simulink software, carried out under combined conditions verify effectiveness strategy. results showed compared original vehicle adopting strategy reduce battery SOC drop 5.15%, relative 47.9%, rate. Compared traditional logic threshold AC, AD effectively peak current demands output reduced 39.5%. decrease decreased 0.69%, increased 12.43%. range performance have thus been improved.