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 .