基于自适应控制的燃料电池发动机热管理策略

Thermal management strategy of fuel cell engine based on adaptive control strategy

针对燃料电池汽车发动机热管理系统,以电堆不同操作条件下出、入口最佳温度值为目标函数,考虑了部件及环境干扰,建立了基于参数估计的仿真模型,设计了基于自适应控制的热管理控制策略。对燃料电池发动机热管理干扰的不确定性和系统状态迟滞的问题进行了改进。仿真结果表明:本文热管理策略在不同电堆运行工况下具有较好的适应性,能够达到电堆出、入口温度稳定于设定值以及系统温度在大、小循环开启时变化最小的目标。

For the thermal management system of fuel cell vehicle engine,taking the optimal temperature value at the inlet and outlet of the stack under different operating conditions as the objective function and considering the interference of components and environment,the simulation model based on parameter estimation is established,and the thermal management control strategy based on adaptive control is designed.The problems of thermal management interference uncertainty and system state hysteresis of fuel cell engine are improved.The simulation results show that the thermal management strategy has good adaptability under different reactor operating conditions,and can achieve the goal of stabilizing the inlet and outlet temperature of the reactor at the set value and minimizing the change of the system temperature when the large and small cycles are turned on.