Nonlinear Control of PEM Fuel Cells by Exact Linearization

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.