Hierarchical Control Strategy of Hybrid Electric Vehicle

To meet the power requirement of hybrid electric vehicle, and improve energy consume efficiency, according to the relationship between the characteristic of power units and energy management, in accordance with the idea of hierarchical control theory, a kind of integrated energy management strate is proposed which is based on the SOC of battery groups and engine fuel consumption, by setting the logic threshold of hierarchical control and the establishing adaptive optimum control Strategy model, considering three targets of vehicle: dynamic performance, fuel economy and emission Performance, to carry out a real-time optimization, Instantly adjust work mode of engine and electric motor, to achieve the best fuel efficiency and to optimize the efficiency of multi-energy power systems. provides a theoretical basis for the application of hybrid power system.