质子交换膜燃料电池电堆温度的非线性控制

Nonlinear Control of Temperature of PEM Fuel Cell Stack

基于质子交换膜燃料电池电堆的能量守恒,建立了在大范围的负载扰动下电池电堆温度的非线性模型。利用状态反馈线性化的输出对干扰基本解耦的新方法进行模型线性化,再依据最优控制理论设计了保证电堆温度恒定的非线性控制器。通过实验和仿真结果表明该控制器能够获得较好的控制效果。

Based on the energy conversation of proton exchange membrane fuel cell (PEMFC) stack, the nonlinear temperature model of PEMFC stack with the large range of disturbances is developed. According to the new method of feedback linearization about the output with respect to the disturbances, the temperature model is linearized, and nonlinear controller is designed to hold the invariable temperature value of PEMFC stack by means of optimal control theory. The experiments and simulations indicate that the controller is applicable and valid.