Documents disponibles écrits par cet auteur

Analysis of supercapacitor as second source based on fuel cell power generation / Thounthong, P. in IEEE transactions on energy conversion, Vol. 24 N°1 (Mars 2009) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 24 N°1 (Mars 2009) . - pp. 247 - 255 Titre : Analysis of supercapacitor as second source based on fuel cell power generation Type de document : texte imprimé Auteurs : Thounthong, P., Auteur ; Raël, S., Auteur ; Davat, B., Auteur Année de publication : 2009 Article en page(s) : pp. 247 - 255 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Distributed  power  generation;  motor  drives;  proton  exchange  membrane  fuel  cells;  supercapacitors Résumé : This paper presents the utilization of a supercapacitor as an auxiliary power source in a distributed generation system, composed of a polymer electrolyte membrane fuel cell (PEMFC) as the main energy source. The main weak point of fuel cells (FCs) is slow dynamics because one must limit the FC current slope in order to prevent fuel starvation problems, to improve its performance and lifetime. The very fast power response and high specific power of a supercapacitor can complement the slower power output of the main source to produce the compatibility and performance characteristics needed in a load. The FC and supercapacitor characteristics are clearly presented. Experimental results with small-scale devices (supercapacitor bank: 292-F, 30-V, 400-A; PEMFC: 500-W, 40-A) illustrate excellent performance during a motor drive cycle. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4745787&sortType%3Das [...] [article] Analysis of supercapacitor as second source based on fuel cell power generation [texte imprimé] / Thounthong, P., Auteur ; Raël, S., Auteur ; Davat, B., Auteur . - 2009 . - pp. 247 - 255. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N°1 (Mars 2009) . - pp. 247 - 255 Mots-clés : Distributed  power  generation;  motor  drives;  proton  exchange  membrane  fuel  cells;  supercapacitors Résumé : This paper presents the utilization of a supercapacitor as an auxiliary power source in a distributed generation system, composed of a polymer electrolyte membrane fuel cell (PEMFC) as the main energy source. The main weak point of fuel cells (FCs) is slow dynamics because one must limit the FC current slope in order to prevent fuel starvation problems, to improve its performance and lifetime. The very fast power response and high specific power of a supercapacitor can complement the slower power output of the main source to produce the compatibility and performance characteristics needed in a load. The FC and supercapacitor characteristics are clearly presented. Experimental results with small-scale devices (supercapacitor bank: 292-F, 30-V, 400-A; PEMFC: 500-W, 40-A) illustrate excellent performance during a motor drive cycle. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4745787&sortType%3Das [...]

Control algorithm of fuel cell and batteries for distributed generation system / Thounthong, P. in IEEE transactions on energy conversion, Vol. 23 N°1 (Mars 2008) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 23 N°1 (Mars 2008) . - pp. 148 - 155 Titre : Control algorithm of fuel cell and batteries for distributed generation system Type de document : texte imprimé Auteurs : Thounthong, P., Auteur ; Raël, S., Auteur ; Davat, B., Auteur Année de publication : 2008 Article en page(s) : pp. 148 - 155 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Distributed  power  generation;  electric  vehicles;  energy  storage;  hybrid  power  systems;  power  system  control;  proton  exchange  membrane  fuel  cells;  secondary  cells Résumé : This paper intends to propose a novel control algorithm for utilizing a polymer electrolyte membrane fuel cell (PEMFC) as a main power source and batteries as a complementary source, for hybrid power sources for distributed generation system, particularly for future electric vehicle applications. The control, which takes into account the slow dynamics of a fuel cell (FC) in order to avoid fuel (hydrogen and air) starvation problems, is obviously simpler than state machines used for hybrid source control. The control strategy lies in using an FC for supplying energy to battery and load at the dc bus. The structure is an FC current, battery current, and battery state-of-charge (SOC) cascade control. To validate the proposed principle, a hardware system is realized by analogical circuits for the FC current loop and numerical calculation (dSPACE) for the battery current and SOC loops. Experimental results with small-scale devices (a 500 W PEM FC and 33 Ah, 48 V lead-acid battery bank) illustrate the excellent control scheme during motor drive cycles. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4358732&sortType%3Das [...] [article] Control algorithm of fuel cell and batteries for distributed generation system [texte imprimé] / Thounthong, P., Auteur ; Raël, S., Auteur ; Davat, B., Auteur . - 2008 . - pp. 148 - 155. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 N°1 (Mars 2008) . - pp. 148 - 155 Mots-clés : Distributed  power  generation;  electric  vehicles;  energy  storage;  hybrid  power  systems;  power  system  control;  proton  exchange  membrane  fuel  cells;  secondary  cells Résumé : This paper intends to propose a novel control algorithm for utilizing a polymer electrolyte membrane fuel cell (PEMFC) as a main power source and batteries as a complementary source, for hybrid power sources for distributed generation system, particularly for future electric vehicle applications. The control, which takes into account the slow dynamics of a fuel cell (FC) in order to avoid fuel (hydrogen and air) starvation problems, is obviously simpler than state machines used for hybrid source control. The control strategy lies in using an FC for supplying energy to battery and load at the dc bus. The structure is an FC current, battery current, and battery state-of-charge (SOC) cascade control. To validate the proposed principle, a hardware system is realized by analogical circuits for the FC current loop and numerical calculation (dSPACE) for the battery current and SOC loops. Experimental results with small-scale devices (a 500 W PEM FC and 33 Ah, 48 V lead-acid battery bank) illustrate the excellent control scheme during motor drive cycles. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4358732&sortType%3Das [...]

Energetical modeling of lithium-ion batteries including electrode porosity effects / Urbain, M. in IEEE transactions on energy conversion, Vol. 25, N° 3 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 862 - 872 Titre : Energetical modeling of lithium-ion batteries including electrode porosity effects Type de document : texte imprimé Auteurs : Urbain, M., Auteur ; Hinaje, M., Auteur ; Raël, S., Auteur Année de publication : 2011 Article en page(s) : pp. 862 - 872 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Electrochemical  electrodes;  lithium;  porosity;  secondary  cells Résumé : All electrochemical batteries are characterized by an electrical behavior that depends on temperature, state of charge, and current. In the case of lithium-ion accumulators, the energetical behavior is moreover deeply marked by line effects, due to the porosity of both electrodes. This paper deals with investigations on an accurate energetical modeling of lithium-ion battery. It is shown in particular that electrode porosity can be taken into account by means of a diffusion impedance represented by a capacitive transmission line. An energetical model, which couples this line with a current independent capacitance, is proposed and characterized at constant temperature (20°C) over different state-of-charge intervals (5%) and for different currents. Reactant diffusion within the electrolyte and relaxation period after discharge are investigated as well. Validation tests carried out on a 6.8-Ah lithium-ion element are conclusive. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5484532&sortType%3Das [...] [article] Energetical modeling of lithium-ion batteries including electrode porosity effects [texte imprimé] / Urbain, M., Auteur ; Hinaje, M., Auteur ; Raël, S., Auteur . - 2011 . - pp. 862 - 872. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 862 - 872 Mots-clés : Electrochemical  electrodes;  lithium;  porosity;  secondary  cells Résumé : All electrochemical batteries are characterized by an electrical behavior that depends on temperature, state of charge, and current. In the case of lithium-ion accumulators, the energetical behavior is moreover deeply marked by line effects, due to the porosity of both electrodes. This paper deals with investigations on an accurate energetical modeling of lithium-ion battery. It is shown in particular that electrode porosity can be taken into account by means of a diffusion impedance represented by a capacitive transmission line. An energetical model, which couples this line with a current independent capacitance, is proposed and characterized at constant temperature (20°C) over different state-of-charge intervals (5%) and for different currents. Reactant diffusion within the electrolyte and relaxation period after discharge are investigated as well. Validation tests carried out on a 6.8-Ah lithium-ion element are conclusive. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5484532&sortType%3Das [...]