A strategy for the spatial temperature control of a molten carbonate fuel cell system
A strategy for the spatial temperature control of a molten carbonate fuel cell system
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DOI：
10.1016/j.jpowsour.2006.08.025
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发表时间：
2006-11
影响因子：
9.2
通讯作者：
M. Sheng;M. Mangold;A. Kienle;A. Kienle
中科院分区：
文献类型：
--
作者：
M. Sheng;M. Mangold;A. Kienle;A. Kienle
本文的目的是开发一种简单实用的熔融碳酸盐燃料电池（MCFC）系统的控制策略。根据动态模型和控制要求，设计了串级控制策略。主控制器施加表示功率需求变化的电池电流变化，并将燃料气体量、蒸汽-碳比、空气数和阴极气体再循环比设定为它们相应的条件，以获得最佳稳态电效率。内回路采用两个反馈PID控制器，一个通过改变主控制器设定的风量来保证固体温度不超过最高温度，另一个通过调节汽碳比来控制最大温差。阶跃响应测试表明，该控制策略在电池电流变化时效果良好。
The object of the paper is to develop a simple and practical control strategy for a molten carbonate fuel cell (MCFC) system. Based on a dynamic model and the control demand, a cascade control strategy is designed. The master controller imposes a change of cell current representing a change in power demand and sets the amount of fuel gas, the steam-to-carbon ratio, the air number and the cathode gas recycle ratio to their corresponding conditions for optimal steady state electric efficiency. Two feedback PID controllers are in the inner loop, one guarantees the solid temperature not to exceed a maximum temperature by changing the air number around the default set by the master controller; the other controls the maximum temperature difference by adjusting the steam-to-carbon ratio. Step response tests show that this control strategy works well when the cell current changes.