Polymer electrolyte membrane fuel cell (PEMFC), because of faster response, portability and the low operating temperature has found wide usage in applications requiring regulated output voltage. Alongwith voltage regulation, optimum stack efficiency is important for reliable operation. Overall, the maximum efficiency point (MEP) operation and voltage regulation need to be achieved while restricting the PEMFC operation till maximum power point (MPP). This demands operational adaptability of PEMFC over a wider range, to meet the desired levels of voltage regulation, maximum efficiency and MPP operation. However, achieving all the objectives simultaneously is challenging since operating points corresponding to the objectives differ. This paper proposes a control strategy that achieves operation dependent adaptability of PEMFC between the objectives as per the demand. The adaptability in controller tuning for MPP and voltage regulation has been formulated as multi-objective optimization (MOO) problem with a constraint on controller parameters, for allowing the PEMFC operation closer to MEP. The solution of MOO problem provides a set of controller configurations, each achieving different operating scenarios/objectives of the PEMFC system. Compared to the existing works aiming at either of the objectives, the effectiveness of the proposed approach is reflected in terms of simultaneous attainment of all the objectives.

中文翻译：

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PEM 燃料电池的操作适应性以实现最大功率提取的最佳电压调节

聚合物电解质膜燃料电池 (PEMFC)，由于响应速度更快、便携性和工作温度低，已在需要调节输出电压的应用中得到广泛应用。除电压调节外，最佳堆效率对于可靠运行也很重要。总体而言，需要实现最大效率点 (MEP) 操作和电压调节，同时将 PEMFC 操作限制到最大功率点 (MPP)。这要求 PEMFC 在更广泛的范围内具有操作适应性，以满足所需的电压调节水平、最大效率和 MPP 操作。然而，同时实现所有目标具有挑战性，因为与目标对应的操作点不同。本文提出了一种控制策略，可根据需求实现 PEMFC 在目标之间的操作相关适应性。针对 MPP 和电压调节的控制器调谐适应性已被表述为多目标优化 (MOO) 问题，并限制控制器参数，以允许 PEMFC 操作更接近 MEP。MOO 问题的解决方案提供了一组控制器配置，每个配置实现 PEMFC 系统的不同操作场景/目标。与针对任一目标的现有工作相比，所提出方法的有效性体现在同时实现所有目标方面。针对 MPP 和电压调节的控制器调谐适应性已被表述为多目标优化 (MOO) 问题，并限制控制器参数，以允许 PEMFC 操作更接近 MEP。MOO 问题的解决方案提供了一组控制器配置，每个配置实现 PEMFC 系统的不同操作场景/目标。与针对任一目标的现有工作相比，所提出方法的有效性体现在同时实现所有目标方面。针对 MPP 和电压调节的控制器调谐适应性已被表述为多目标优化 (MOO) 问题，并限制控制器参数，以允许 PEMFC 操作更接近 MEP。MOO 问题的解决方案提供了一组控制器配置，每个配置实现 PEMFC 系统的不同操作场景/目标。与针对任一目标的现有工作相比，所提出方法的有效性体现在同时实现所有目标方面。