Active current sharing and source management in fuel cell–battery hybrid power system / Wei Jiang in IEEE transactions on industrial electronics, Vol. 57 N° 2 (Fevrier 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 2 (Fevrier 2010) . - pp. 752 - 761 Titre : Active current sharing and source management in fuel cell–battery hybrid power system Type de document : texte imprimé Auteurs : Wei Jiang, Auteur ; Fahimi, Babak, Auteur Article en page(s) : pp. 752 - 761 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Active current sharing Battery Fuel cell (FC) Hybrid power system Power source management Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fuel cells (FCs) are being considered as a potential alternative in long term to replace diesel/gasoline combustion engines in vehicles and emergency power sources. However, high cost and slow dynamic response of FC still persist as the main hurdles for wider applications. To remedy this problem, an energy storage system with adequate power capacity has to be incorporated. This paper presents a novel control design for FC-battery hybrid power system which enables both active current sharing and power source management control in such hybrid systems. Different hybrid power system structures are investigated and evaluated; dual-converter structure and four modes of operation are defined to provide efficient and sustainable solution to such a hybrid power system. A novel integrated control system with inherent current sharing and generation mode swapping capability is proposed; based on system component status, the control system is able to regulate the output power from each source under different scenarios. The dedicated control system is implemented in a TMS320F2812 DSP, and experimental results for an FC-battery-based uninterruptible power supply are provided to demonstrate the static and dynamic performance of the control system. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5170092 [article] Active current sharing and source management in fuel cell–battery hybrid power system [texte imprimé] / Wei Jiang, Auteur ; Fahimi, Babak, Auteur . - pp. 752 - 761. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 2 (Fevrier 2010) . - pp. 752 - 761 Mots-clés : Active current sharing Battery Fuel cell (FC) Hybrid power system Power source management Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fuel cells (FCs) are being considered as a potential alternative in long term to replace diesel/gasoline combustion engines in vehicles and emergency power sources. However, high cost and slow dynamic response of FC still persist as the main hurdles for wider applications. To remedy this problem, an energy storage system with adequate power capacity has to be incorporated. This paper presents a novel control design for FC-battery hybrid power system which enables both active current sharing and power source management control in such hybrid systems. Different hybrid power system structures are investigated and evaluated; dual-converter structure and four modes of operation are defined to provide efficient and sustainable solution to such a hybrid power system. A novel integrated control system with inherent current sharing and generation mode swapping capability is proposed; based on system component status, the control system is able to regulate the output power from each source under different scenarios. The dedicated control system is implemented in a TMS320F2812 DSP, and experimental results for an FC-battery-based uninterruptible power supply are provided to demonstrate the static and dynamic performance of the control system. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5170092

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De - emulsification of kerosene / water emulsions with plate - type microchannels / Xiao Chen in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9279–9288 Titre : De - emulsification of kerosene / water emulsions with plate - type microchannels Type de document : texte imprimé Auteurs : Xiao Chen, Auteur ; Houfang Lu, Auteur ; Wei Jiang, Auteur Année de publication : 2010 Article en page(s) : pp. 9279–9288 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Microchannels Emulsions Résumé : Kerosene-in-water emulsions were de-emulsified by narrow plate-type microchannels. The emulsions with different Sauter diameters of 5 or 10 μm were formed by high-shear homogenization method and passed through microchannels with clearances of 100 to 200 μm. The de-emulsification efficiency was from 10% to 30% in a single pass through the channel. By repeatedly passing through the microchannels, up to 90% de-emulsification efficiency can be achieved. The results showed that the de-emulsification efficiency was influenced by the flow rate, Sauter diameter, microchannel size, and wall materials. Hydrophobic surface of the microchannel improved the de-emulsification efficiency. A coupled two-step mechanism was proposed to illustrate the de-emulsification process. Specially, polytetrafluoroethylene−stainless steel (PTFE-SS) plate combination of the microchannel induced different velocities of the continuous phase close to the wall surface and helped the droplets of the emulsion move toward the PTFE wall and be captured. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1005228 [article] De - emulsification of kerosene / water emulsions with plate - type microchannels [texte imprimé] / Xiao Chen, Auteur ; Houfang Lu, Auteur ; Wei Jiang, Auteur . - 2010 . - pp. 9279–9288. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9279–9288 Mots-clés : Microchannels Emulsions Résumé : Kerosene-in-water emulsions were de-emulsified by narrow plate-type microchannels. The emulsions with different Sauter diameters of 5 or 10 μm were formed by high-shear homogenization method and passed through microchannels with clearances of 100 to 200 μm. The de-emulsification efficiency was from 10% to 30% in a single pass through the channel. By repeatedly passing through the microchannels, up to 90% de-emulsification efficiency can be achieved. The results showed that the de-emulsification efficiency was influenced by the flow rate, Sauter diameter, microchannel size, and wall materials. Hydrophobic surface of the microchannel improved the de-emulsification efficiency. A coupled two-step mechanism was proposed to illustrate the de-emulsification process. Specially, polytetrafluoroethylene−stainless steel (PTFE-SS) plate combination of the microchannel induced different velocities of the continuous phase close to the wall surface and helped the droplets of the emulsion move toward the PTFE wall and be captured. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1005228

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