This paper presents the design of a sliding mode control strategy through an input decoupling of an hybrid fuel cell based system. The hybrid system is composed by a fuel cell stack and a Supercapacitors module, connected to a single DC bus. A continuous conduction mode MIMO model is considered and the control strategy for the system is discussed. The latter is developed using a diffeomorphism to decouple the control inputs to surface interactions. Finally, an adaptive switching function for the two inputs is designed to robustly reject system perturbations and parameters variations. The control strategy is then evaluated through extensive simulation, considering strong load demand variations.

This research was supported by the Universidad Nacional de La Plata, the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), and SECyT, from Argentina; and by the 7FP of EU under project ACOFC (GA-293876); and by the Universitat Politècnica de Catalunya, the MICINN under CICYT projects DPI2010-15274 and DPI2010-15110, the CSIC under JAEDOC Research Programme and the AECID under project A/026279/09, from Spain.

Prsentado al 12th VSS celebrado en Mumbai (India) del 12 al 14 de junio de 2012.

Peer Reviewed