Documents disponibles écrits par cet auteur

Load-tracking performance of an autonomous SOFC-based hybrid power generation/energy storage system / Wang, Li in IEEE transactions on energy conversion, Vol. 25 N° 1 (Mars 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 128 - 139 Titre : Load-tracking performance of an autonomous SOFC-based hybrid power generation/energy storage system Type de document : texte imprimé Auteurs : Wang, Li, Auteur ; Dong-Jing Lee, Auteur Année de publication : 2010 Article en page(s) : pp. 128 - 139 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : DC-DC  power  convertors;  battery  storage  plants;  diesel-electric  generators;  hybrid  power  systems;  invertors;  solid  oxide  fuel  cells Résumé : This paper focuses on the load-tracking performance of an autonomous hybrid power generation/energy storage system (PG/ESS) with two solid-oxide fuel cells (SOFCs), a diesel-engine generator (DEG), a battery ESS (BESS), two dc-dc converters, and a dc-ac inverter. The system can sustain PG to supply suddenly changed loads, one of which is an emergency load that must have uninterruptible power supply. This paper proposes a control scheme using the output dc current of the SOFC or the current magnitude of the ac load to modulate the hydrogen-flow rate of the SOFC. The PG of the two SOFCs can be adequately coordinated with the generated power of the DEG, the stored/released energy of the BESS, and the output power of the dc-ac inverter to maintain both frequency and voltage of the connected loads at the desired values. Time-domain simulated results of the studied hybrid system under four studied cases are performed and analyzed to validate the good load-tracking characteristics of the proposed SOFC-based hybrid PG/ESS feeding time-varying loads. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5350670&sortType%3Das [...] [article] Load-tracking performance of an autonomous SOFC-based hybrid power generation/energy storage system [texte imprimé] / Wang, Li, Auteur ; Dong-Jing Lee, Auteur . - 2010 . - pp. 128 - 139. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 128 - 139 Mots-clés : DC-DC  power  convertors;  battery  storage  plants;  diesel-electric  generators;  hybrid  power  systems;  invertors;  solid  oxide  fuel  cells Résumé : This paper focuses on the load-tracking performance of an autonomous hybrid power generation/energy storage system (PG/ESS) with two solid-oxide fuel cells (SOFCs), a diesel-engine generator (DEG), a battery ESS (BESS), two dc-dc converters, and a dc-ac inverter. The system can sustain PG to supply suddenly changed loads, one of which is an emergency load that must have uninterruptible power supply. This paper proposes a control scheme using the output dc current of the SOFC or the current magnitude of the ac load to modulate the hydrogen-flow rate of the SOFC. The PG of the two SOFCs can be adequately coordinated with the generated power of the DEG, the stored/released energy of the BESS, and the output power of the dc-ac inverter to maintain both frequency and voltage of the connected loads at the desired values. Time-domain simulated results of the studied hybrid system under four studied cases are performed and analyzed to validate the good load-tracking characteristics of the proposed SOFC-based hybrid PG/ESS feeding time-varying loads. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5350670&sortType%3Das [...]

Small-signal stability analysis of an autonomous hybrid renewable energy power generation/energy storage system / Dong-Jing Lee 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. 311 - 320 Titre : Small-signal stability analysis of an autonomous hybrid renewable energy power generation/energy storage system : Part I: time-domain simulations Type de document : texte imprimé Auteurs : Dong-Jing Lee, Auteur ; Wang, Li, Auteur Année de publication : 2008 Article en page(s) : pp. 311 - 320 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Battery  storage  plants;  diesel-electric  generators;  energy  storage;  flywheels;  fuel  cells;  power  generation  reliability;  power  system  stability;  renewable  energy  sources;  time-domain  analysis;  wind  turbines Résumé : Small-signal stability analyzed results of an autonomous hybrid renewable energy power generation/energy storage system connected to isolated loads using time-domain simulations is presented in this paper. The companion paper presents frequency-domain analyzed results of the same hybrid system. The proposed renewable energy power generation subsystems include three wind turbine generators (WTGs), a diesel engine generator, two fuel cells (FCs), and a photovoltaic system (PV) while the energy storage subsystems consist of a battery energy storage system and a flywheel energy storage system. An aqua electrolyzer absorbs a part of generated energy from PV or WTGs to generate available hydrogen for FCs. A time-domain approach based on three mathematical models for three studied cases under various operating points and disturbance conditions is performed. It can be concluded from the simulation results that the proposed hybrid power generation/energy storage system feeding isolated loads can be properly operated to achieve system power-frequency balance condition. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4453988&sortType%3Das [...] [article] Small-signal stability analysis of an autonomous hybrid renewable energy power generation/energy storage system : Part I: time-domain simulations [texte imprimé] / Dong-Jing Lee, Auteur ; Wang, Li, Auteur . - 2008 . - pp. 311 - 320. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 N°1 (Mars 2008) . - pp. 311 - 320 Mots-clés : Battery  storage  plants;  diesel-electric  generators;  energy  storage;  flywheels;  fuel  cells;  power  generation  reliability;  power  system  stability;  renewable  energy  sources;  time-domain  analysis;  wind  turbines Résumé : Small-signal stability analyzed results of an autonomous hybrid renewable energy power generation/energy storage system connected to isolated loads using time-domain simulations is presented in this paper. The companion paper presents frequency-domain analyzed results of the same hybrid system. The proposed renewable energy power generation subsystems include three wind turbine generators (WTGs), a diesel engine generator, two fuel cells (FCs), and a photovoltaic system (PV) while the energy storage subsystems consist of a battery energy storage system and a flywheel energy storage system. An aqua electrolyzer absorbs a part of generated energy from PV or WTGs to generate available hydrogen for FCs. A time-domain approach based on three mathematical models for three studied cases under various operating points and disturbance conditions is performed. It can be concluded from the simulation results that the proposed hybrid power generation/energy storage system feeding isolated loads can be properly operated to achieve system power-frequency balance condition. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4453988&sortType%3Das [...]