Dynamic modelling and parametric control for the polymer electrolyte membrane fuel cell system
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This paper addresses the development of a parametric controller for the Polymer Electrolyte Membrane (PEM) fuel cell system, and the investigation of its performance. First, the dynamic modelling is carried out to obtain the transient performance of the PEM fuel cell system and to form the basis for the controller design. Then, a parametric controller is designed to optimize its operation, focussing on tracking the output voltage and stack temperature set points by suitably manipulating the oxygen and hydrogen excess ratios, and cooling water flow rate. It is realized by formulating a Model Predictive Control (MPC) problem, which is solved via parametric programming technique to obtain the explicit control action function. The closed-loop simulation results show that the designed parametric controller can track the set points well, and ensures reliable performance in the presence of the current load fluctuations. Compared to proportional-integral-derivative controller (PID), it has the advantages of satisfying the imposed constraints, the potential of simple hydrogen control operation and lower hydrogen consumption. 2013 Elsevier B.V. All rights reserved.