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Oxygen Excess Ratio Controller Design of PEM Fuel Cell

机译：氧气过量比控制器设计PEM燃料电池

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摘要

The work of this paper focuses on oxygen excess ratio control, for the oxygen excess ratio has a great influence on the performance of the proton exchange membrane (PEM) fuel cell. To model dynamics of air supply system and oxygen excess ratio, a validated three-order model is used for controller design. Because the pressure of the cathode is unmeasurable in the actual system, a state observer is designed to observe the cathode pressure based on the third-order model. A controller combining with feedforward control and feedback control based on LQR method and map that can output the equilibrium state, feedforward control signal and feedback gain calculated off-line at different equilibrium points through the input of the expected oxygen excess ratio and load current is then designed. At last, oxygen excess ratio control strategy under different working conditions is realized and the simulation results verify the effectiveness of the proposed controller.
机译：本文的工作侧重于氧气过量比控制，对于氧气过量比对质子交换膜（PEM）燃料电池的性能产生了很大影响。为了模拟供气系统和氧过量比率的动态，验证的三阶模型用于控制器设计。由于阴极的压力在实际系统中不可测量，所以旨在基于三阶模型观察阴极压力。一种控制器与基于LQR方法的前馈控制和反馈控制的控制器，并通过电换氧点的馈电控制信号和反馈增益的映射通过预期的氧气过量比和负载电流的输入计算出在不同的平衡点处计算出的离线。设计。最后，实现了不同工作条件下的氧过量比控制策略，仿真结果验证了所提出的控制器的有效性。

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