复合电源型电动汽车的自适应能量管理策略

Adaptive energy management strategy for hybrid electric vehicle

驾驶意图是影响电动汽车能量分配的重要因素,为此提出了基于驾驶意图-模糊自适应控制的能量管理策略。在传统的模糊控制能量策略基础上,增加多模糊控制器识别出驾驶意图,其识别结果用于自适应修正传统能量分配系数,使得能量管理策略不仅只考虑车的因素还考虑路况、驾驶员的因素。较模糊控制策略,所提的能量管理策略能量利用率提高了约3.61%,电池的最大输出电流降低了15.45%,电池的功率波动降低了13.86%,电池的温升降低了5.19%。仿真结果表明,基于驾驶意图-模糊自适应控制的能量管理策略能更有效提高蓄电池能量利用率,延长蓄电池寿命。

Driving intention is an important factor affecting the energy distribution of electric vehicles.This paper presented an energy management strategy based on driving intention fuzzy adaptive control.On the basis of the traditional fuzzy control energy strategy,the multi fuzzy controller was added to distinguish the driving intention,and the recognition result was used to adaptively modify the traditional energy distribution coefficient,so that the energy management strategy not only considered the factors of the vehicle,but also the factors of the road condition and the driver.Compared with the fuzzy control strategy,the energy utilization rate is increased by about 3.61%,the maximum output current of the battery is reduced by 15.45%,the power fluctuation of the battery is reduced by 13.86%,and the temperature rise of the battery is reduced by 5.19%.The simulation results show that the energy management strategy based on driving intention fuzzy adaptive control can improve the energy utilization rate and prolong the battery life.