Near-Optimal Controls of a Fuel Cell Coupled with Reformer using Singular Perturbation methods

Nazem-Zadeh, S.; Hamidi-Beheshti, M.T.

doi:10.22060/miscj.2016.872

Near-Optimal Controls of a Fuel Cell Coupled with Reformer using Singular Perturbation methods

Document Type : Research Article

Authors

Dept. of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran

10.22060/miscj.2016.872

Abstract

A singularly perturbed model is proposed for a system comprised of a PEM Fuel Cell
(PEM-FC) with Natural Gas Hydrogen Reformer (NG-HR). This eighteenth order system is decomposed
into slow and fast lower order subsystems using singular perturbation techniques that provides tools for
separation and order reduction. Then, three different types of controllers, namely an optimal full-order,
a near-optimal composite controller based on the slow and the fast subsystems, and a near-optimal
reduced-order controller based on the reduced-order model, are designed. The comparison of closedloop
responses of these three controllers shows that there are minimal degradations in the performance
of the composite and the reduced order controllers.

Highlights

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Keywords

References