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Multiobjective Control of PEM Fuel Cell System With Improved Durability

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3 Author(s)
Yun She ; Fuel Control Group, Caterpillar, Inc., Mossville, IL, USA ; Baran, M.E. ; Xu She

A critical design goal of a fuel-cell-based renewable energy system in a smart grid scenario is to enable high efficiency while extending durability. This is particularly emphasized when the fuel-cell system becomes widely used. Towards this goal, the effort in this research paper is to develop multiobjective controllers to simultaneously realize both output tracking and durability improvement. More specifically, two types of controller are developed. With assumptions of knowledge of system parameters, the first controller enables exponentially stability of the closed-loop system. Then, with practical considerations of robustness, an adaptive extension of the first controller is developed, which is capable of handling possible mismatch between real parameters and parameters obtained from the manufacturer or system identification methods. The performance and stability is theoretically guaranteed by a Lyapunov-based proof. Together with theoretical analysis, several scenarios are considered and tested via Matlab/simulink-based simulation.

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Sustainable Energy, IEEE Transactions on  (Volume:4 ,  Issue: 1 )