Optimal Hybridization Degree in Fuel Cell Vehicles According to Drivability Requirements

DIEGO FEROLDI; MARTA BASUALDO

Mar del Plata, Buenos Aires

Congreso; 4º Congreso Nacional - 3° Congreso Iberoamericano de Hidrógeno y Fuentes sustentables de Energía - HYFUSEN2011; 2011

Instituto de Energía y Desarrollo Sustentable (IEDS) de la Comisión Nacional de Energía Atómica en colaboración con la Universidad Tecnológica Nacional

This paper addresses a method to determine the optimal Hybridization Degree in Fuel Cell Hybrid Vehicles (FCHV). The proposed method is applied to an automobile. First, the design of the electrical structure is addressed, focusing on the determination of the electrical topology and the selection of the energy storage system. Then, a detailed model of the FCHV is performed with a Matlab toolbox called Advanced Vehicle Simulator (ADVISOR). Finally, the method to compute the optimal hybridization degree according to drivability requirements is addressed. This methodology determines the FCS rated power and the size of the supercapacitor bank necessary to fulfill a series of design requirements for driving performance such as acceleration and top speed. The results suggest a conflict between a design according to drivability conditions and a design for the highest efficiency. Also, the methodology is tested with four standard driving cycles which are useful to quantify rigorously its real capacity.