燃料电池混合动力汽车能量控制策略仿真研究

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。

Simulation Research on Energy Management Strategy of Fuel Cell Hybrid Electric Vehicle

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.