Javaid Usman, Iqbal Jamshed, Mehmood Adeel, Uppal Ali Arshad
Department of Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad, Pakistan.
Department of Computer Science and Technology, Faculty of Science and Engineering, University of Hull, Hull, United Kingdom.
PLoS One. 2022 Feb 25;17(2):e0264205. doi: 10.1371/journal.pone.0264205. eCollection 2022.
A Polymer Electrolytic Membrane Fuel Cell (PEMFC) is an efficient power device for automobiles, but its efficiency and life span depend upon its air delivery system. To ensure improved performance of PEMFC, the air delivery system must ensure proper regulation of Oxygen Excess Ratio (OER). This paper proposes two nonlinear control strategies, namely Integral Sliding Mode Control (ISMC) and Fast Terminal ISMC (FTISMC). Both the controllers are designed to control the OER at a constant level under load disturbances while avoiding oxygen starvation. The derived controllers are implemented in MATLAB/ Simulink. The corresponding simulation results depict that FTISMC has faster tracking performance and lesser fluctuations due to load disturbances in output net power, stack voltage/power, error tracking, OER, and compressor motor voltage. Lesser fluctuations in these parameters ensure increased efficiency and thus extended life of a PEMFC. The results are also compared with super twisting algorithm STA to show the effectiveness of the proposed techniques. ISMC and FTISMC yield 7% and 20% improved performance as compared to STA. The proposed research finds potential applications in hydrogen-powered fuel cell electric vehicles.
聚合物电解质膜燃料电池（PEMFC）是一种用于汽车的高效动力装置，但其效率和寿命取决于其空气输送系统。为确保PEMFC性能得到改善，空气输送系统必须确保对氧过量比（OER）进行适当调节。本文提出了两种非线性控制策略，即积分滑模控制（ISMC）和快速终端ISMC（FTISMC）。这两种控制器都旨在在负载干扰下将OER控制在恒定水平，同时避免氧气不足。所推导的控制器在MATLAB/Simulink中实现。相应的仿真结果表明，FTISMC具有更快的跟踪性能，并且由于输出净功率、电池组电压/功率、误差跟踪、OER和压缩机电机电压中的负载干扰而产生的波动较小。这些参数中的较小波动确保了效率的提高，从而延长了PEMFC的寿命。还将结果与超扭曲算法STA进行了比较，以展示所提出技术的有效性。与STA相比，ISMC和FTISMC的性能分别提高了7%和20%。所提出的研究在氢动力燃料电池电动汽车中具有潜在应用。
