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This paper presents a dynamic model of polymer electrolyte membrane fuel cells (PEMFCs) for the purpose of constructing a nonlinear-control strategy for PEMFC by using the exact linearization approach. By introducing additional states and outputs, the original multiple-input-single-output nonlinear model of the PEMFC is transformed into a multiple-input-multiple-output system so that the exact linearization approach can be directly utilized. Simulation results show that the PEMFCs with nonlinear control have better transient and steady-state performances.
Date of Publication: Nov.-dec. 2007