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Electrochemical optimization and small-signal analysis of grid- connected polymer electrolyte membrane (PEM) fuel cells for renewable energy integration

机译:电化学优化和新型高分子电解质膜(PEM)燃料电池用于可再生能源集成的小信号分析

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In this paper, a small-signal model of a single cell Polymer Electrolyte Membrane Fuel Cell (PEMFC) was developed based on state-space approach to study the effect of various operating conditions on the dynamic responses of the fuel cell. Dynamics of hydrogen, oxygen, and water partial pressure were considered in the modeling procedure. The transient responses of a single- and multiple cell PEMFC were also investigated as the operating parameters of air flow rate, fuel flow rate, temperature, anode/cathode relative humidity level, and electrical current were varied. Next, the studied PEMFC was integrated to the main grid using a boost DC/DC converter and a DC/AC converter. The stability of the overall system was tested through eigenvalue analysis in MATLAB, and several case studies were designed to examine the sensitivity of boost converter parameters and phase-locked loop (PLL) on the stability of the overall system. The analysis results were then validated on a 100 Watt simulated PEMFC in MATLAB Simscape Power System toolbox, and a set of optimum operating conditions were proposed. (C) 2020 Elsevier Ltd. All rights reserved.
机译:本文基于状态空间方法开发了单细胞聚合物电解质电解质膜燃料电池(PEMFC)的小信号模型,以研究各种操作条件对燃料电池的动态响应的影响。在建模程序中考虑了氢气,氧气和水分压力的动态。还研究了单细胞和多个细胞PEMFC的瞬态响应作为空气流速,燃料流速,温度,阳极/阴极相对湿度水平的操作参数,并且各种电流变化。接下来,使用升压DC / DC转换器和DC / AC转换器将研究的PEMFC集成到主电网。通过MATLAB的特征值分析测试了整个系统的稳定性,旨在研究升压转换器参数和锁相环(PLL)对整个系统的稳定性的敏感性。然后在MATLAB SIMSCAPE电力系统工具箱100瓦模拟PEMFC上验证分析结果,提出了一组最佳操作条件。 (c)2020 elestvier有限公司保留所有权利。

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