【摘要】 燃料电池客车采用多动力源的动力系统结构,需对其能量流动进行有效的控制。文章探讨了动力系统驱动模式下的3种能量分配控制策略,以及在再生制动模式下的一种简单的能量回馈控制。在ADVISOR软件平台上建立了控制策略和整个系统的仿真模型,并基于性能评估函数对汽车性能进行了分析。仿真结果表明,再生制动可以提高整车燃油经济性达20%,与恒压和离线能量分配相比,在线能量分配下燃油经济性好、蓄电池SOC波动小,但要精确估计蓄电池SOC,可能使其性能比预期的低。更多还原

【Abstract】 For Fuel Cell Bus with multi-power sources configuration,energy flow must be efficiently controlled.In the traction mode,three different control strategies on energy management are discussed.In the braking mode,a simple control method of regenerative braking is presented.Based on the software ADVISOR,the control modules of the proposed control strategies and a simulation model of the overall system are developed.The vehicle performances are evaluated with a cost function.Simulation results show that regenerative braking can improve the vehicle fuel economy as much as 20%.Of the three control strategies,on-line energy distribution achieves better fuel economy and smaller battery SOC fluctuation than constant voltage control and off-line energy distribution.But it requires precise battery SOC estimation that may lead to much poorer performance than anticipated.更多还原