Proton exchange membrane fuel cell (PEMFC) s are faced with dynamical load scenario in practical applications, and the resulting temperature variation will decrease the performance and consequently shorten the fuel cell lifetime. To address this problem, a control strategy for regulating the stack temperature is proposed in this paper. Firstly, a thermal management-oriented dynamic model of a water-cooled PEMFC system is built to facilitate the control design. Secondly, considering that the stack temperature should be maintained in a certain range regardless of the dynamical changing current demand, a Barrier Lyapunov function is employed to construct a feedback error of the stack temperature. Thirdly, a set of adaptation laws is designed to estimate the unknown parameters related to the gas flow rates in the flow fields. Particularly, a dynamic inversion tracking methodology is applied to design the non-affine input. A Lyapunov method based analysis demonstrates the stability and convergence of the closed-loop properties. Simulation results are provided to show that the proposed control strategy can satisfy all the control objectives and enhance the control performance compared to the proportional-integral controlled case.

在实际应用中，质子交换膜燃料电池（PEMFC）面临着动态负载的情况，所产生的温度变化会降低性能，从而缩短燃料电池的寿命。为了解决这个问题，本文提出了一种调节烟囱温度的控制策略。首先，建立了一个以热管理为导向的水冷式PEMFC系统动力学模型，以方便控制设计。其次，考虑到无论动态变化的电流需求如何，都应将烟囱温度保持在一定范围内，采用屏障李雅普诺夫函数构造烟囱温度的反馈误差。第三，设计了一组适应律，以估计与流场中气体流速有关的未知参数。特别，采用动态反演跟踪方法来设计非仿射输入。基于李雅普诺夫方法的分析证明了闭环特性的稳定性和收敛性。仿真结果表明，与比例积分控制情况相比，所提出的控制策略能够满足所有控制目标，并能提高控制性能。