Energy Efficiency Improvement with Hydraulic Electric Hybrid Vehicles

Hydraulic electric hybrid vehicle (HEHV) is designed, and its energy management control strategy is discussed in this paper. Matlab/Simulink is used to establish a battery electric vehicle (BEV) and HEHV models, and backward simulation is adopted for the simulation to get the variation of torque and battery state of charge (SOC) through New York City cycle of the US Environmental Protection Agency (NYCC). In this paper, the rule-based control strategy and the genetic algorithm are applied for the energy distribution management strategy. The simulation results show that the electricity economic performance of the designed hydraulic hybrid vehicle is improved by 43.65% than that of battery electric vehicle.