CONCEPTION D'UNE SOURCE HYBRIDE UTILISANT UNE PILE A COMBUSTIBLE ET DES SUPERCONDENSATEURS

Abstract : The design and testing of a purely supercapacitor energy storage device as auxiliary power
source in electrical vehicle applications having a PEM fuel cell as main source are presented.
The two control strategies are explained. The control algorithms are that fuel cell is simply
operating in almost steady state conditions in order to lessen the mechanical stresses of fuel
cell and to ensure a good synchronization between fuel flow and fuel cell current.
Supercapacitors are functioning during absence of energy from fuel cell, transient energy
delivery or transient energy recovery.
The system utilizes two modules of SAFT supercapacitive storage device. This device is
connected to a 42 V DC bus by a 2-quadrant dc/dc converter, and fuel cell is connected to the
dc bus by a boost converter. The system structure is realized by analogical current loops and
digital control (dSPACE) for voltage loops and estimation algorithms. Experimental results
with a 500 W PEM fuel cell point out the slow dynamics naturally of fuel cell because of
thermodynamic and mechanical operation, and also substantiate that the supercapacitors can
improve dynamics and power conditioning for automotive electrical system.
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Phatiphat Thounthong. CONCEPTION D'UNE SOURCE HYBRIDE UTILISANT UNE PILE A COMBUSTIBLE ET DES SUPERCONDENSATEURS. Micro et nanotechnologies/Microélectronique. Institut National Polytechnique de Lorraine - INPL, 2005. Français. ⟨tel-00083105⟩

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