Control of Hybrid Electric Bus based on hybrid system theory

With a Hybrid Electric Bus (HEB) of rear-wheel drive as the study object, a hybrid dynamical system theory is introduced to formulate the powertrain system for HEB. A mode transform driven energy control strategy and coordinated regenerative braking control strategy was designed. Based on the hybrid automata model, the control model for the power-train system of HEB was founded. A hybrid modeling method was presented based on the Simulink/Stateflow. The powertrain system control strategy simulation model of HEB was established by Advisor. the performance of instance HEB were simulated and tested, The results show that could meet the requirements of overall vehicle performance and the fuel economy was reduced by 15.9% compared with the tradition bus under typical urban driving cycles.