Energy management strategies for a hybrid electric vehicle

In this paper a fuzzy logic, rule based control strategy is proposed for a parallel, hybrid electric vehicle. The energy management optimizes engine operational efficiency while maintaining battery state of charge. Fuzzy logic shifting strategy improves the drivability and performance and avoids undesirable frequent shifting. Simulation has been conducted in a forward-looking model to implement the design. The improvements are presented with simulation results as well as the comparison with those performed using default controller.