Power Management for Series Hybrid Electrical Vehicles via Power Split Strategy

الملخص

Further to a previous study about power management for series hybrid electrical vehicles (SHEV) via on-off control strategy, using Matlab/Simulink, an attempt will be made through this paper to study another control strategy for SHEV called power-split control strategy. In case of the onoff control strategy, the combustion engine is operated at its optimal operating point which is based on minimization of fuel consumption or minimization of emissions or even a compromise on both. While the power split strategy is based on the optimal operating line of the engine, where the ICE needs to deliver different power demands, the corresponding optimal operating points represent the optimal operating line. The overall efficiency of the SHEV under this strategy has been presented and the effect of the initial state of charge (SOC) of the battery on the overall efficiency has been taken into consideration. Finally, a comparison for the overall efficiency of the SHEV under the two control strategies and the effect of the SOC on the overall efficiency has been presented