Comments and further results on “a new critical formula and mathematical model of double-tap interphase reactor in a six-phase tap-changer diode rectifier” / Fangang, Meng in IEEE transactions on industrial electronics, Vol. 57 N° 3 (Mars 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 3 (Mars 2010) . - pp. 950 - 953 Titre : Comments and further results on “a new critical formula and mathematical model of double-tap interphase reactor in a six-phase tap-changer diode rectifier” Type de document : texte imprimé Auteurs : Fangang, Meng, Auteur ; Shiyan, Yang, Auteur ; Wei, Yang, Auteur Article en page(s) : pp. 950 - 953 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Double-tap changer Interfase reactor (IFR) Mathematical model Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents some comments and further results concerning the mathematical model of double-tap interphase reactor (IPR) in a six-phase tap-changer diode rectifier. On the basis of coupling circuit principle and phase-coordinate method, the proposed model, which reduces the mutual inductance coupling completely, describes the double-tap IPR by an admittance matrix containing the information about the connection way and electrical quantities. Some computer simulation and experiments are included to support the theoretical analysis of the model. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4957101 [article] Comments and further results on “a new critical formula and mathematical model of double-tap interphase reactor in a six-phase tap-changer diode rectifier” [texte imprimé] / Fangang, Meng, Auteur ; Shiyan, Yang, Auteur ; Wei, Yang, Auteur . - pp. 950 - 953. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 3 (Mars 2010) . - pp. 950 - 953 Mots-clés : Double-tap changer Interfase reactor (IFR) Mathematical model Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents some comments and further results concerning the mathematical model of double-tap interphase reactor (IPR) in a six-phase tap-changer diode rectifier. On the basis of coupling circuit principle and phase-coordinate method, the proposed model, which reduces the mutual inductance coupling completely, describes the double-tap IPR by an admittance matrix containing the information about the connection way and electrical quantities. Some computer simulation and experiments are included to support the theoretical analysis of the model. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4957101

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Cure of filament-caused MBR fouling in the presence of antibiotics / Fangang, Meng in Industrial & engineering chemistry research, Vol. 51 N° 42 (Octobre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13784-13791 Titre : Cure of filament-caused MBR fouling in the presence of antibiotics : Taking ciprofloxacin exposure as an example Type de document : texte imprimé Auteurs : Fangang, Meng, Auteur ; Zhizhen Wang, Auteur ; Yue Li, Auteur Année de publication : 2012 Article en page(s) : pp. 13784-13791 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Antibiotic Fouling Résumé : Pharmaceuticals and personal care products (PPCPs) are ubiquitous in wastewater streams, but little is known regarding their roles in membrane fouling during the operation of membrane bioreactors (MBRs). This study attempted to understand the role of ciprofloxacin exposure in control of filamentous bulking as well as membrane fouling mitigation. Compared with the control MBR, results show that the ciprofloxacin could selectively inhibit and kill filaments present in the mixed liquor, and, as a consequence, the sludge settleability improved significantly. The addition of ciprofloxacin had little influence on organic removals and nitrification, but had an adverse effect on denitrification. In addition, the sludge flocs exposure to ciprofloxacin still kept in compact structure; specifically, granular sludge was finally formed possibly due to the increase of polysaccharides in extracellular polymeric substances (EPS). Characterization by nuclear magnetic resonance (NMR) corroborated the enrichment of polysaccharides in the EPS exposure to ciprofloxacin. On the other hand, because of the release of EPS and the decay of filaments, soluble microbial products (SMP), particularly soluble polysaccharides, increased significantly in the MBR exposure to ciprofloxacin. Despite this, the results of this study show that the presence of trace contaminants in wastewater streams may play some positive roles in MBR fouling control. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508202 [article] Cure of filament-caused MBR fouling in the presence of antibiotics : Taking ciprofloxacin exposure as an example [texte imprimé] / Fangang, Meng, Auteur ; Zhizhen Wang, Auteur ; Yue Li, Auteur . - 2012 . - pp. 13784-13791. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13784-13791 Mots-clés : Antibiotic Fouling Résumé : Pharmaceuticals and personal care products (PPCPs) are ubiquitous in wastewater streams, but little is known regarding their roles in membrane fouling during the operation of membrane bioreactors (MBRs). This study attempted to understand the role of ciprofloxacin exposure in control of filamentous bulking as well as membrane fouling mitigation. Compared with the control MBR, results show that the ciprofloxacin could selectively inhibit and kill filaments present in the mixed liquor, and, as a consequence, the sludge settleability improved significantly. The addition of ciprofloxacin had little influence on organic removals and nitrification, but had an adverse effect on denitrification. In addition, the sludge flocs exposure to ciprofloxacin still kept in compact structure; specifically, granular sludge was finally formed possibly due to the increase of polysaccharides in extracellular polymeric substances (EPS). Characterization by nuclear magnetic resonance (NMR) corroborated the enrichment of polysaccharides in the EPS exposure to ciprofloxacin. On the other hand, because of the release of EPS and the decay of filaments, soluble microbial products (SMP), particularly soluble polysaccharides, increased significantly in the MBR exposure to ciprofloxacin. Despite this, the results of this study show that the presence of trace contaminants in wastewater streams may play some positive roles in MBR fouling control. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508202

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Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier / Shiyan, Yang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3022 - 3029 Titre : Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier Type de document : texte imprimé Auteurs : Shiyan, Yang, Auteur ; Fangang, Meng, Auteur ; Wei, Yang, Auteur Année de publication : 2011 Article en page(s) : pp. 3022 - 3029 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Double-tag changer Interphase reactor (IPR) Multipulse rectifier Optimum turns ratio Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, the optimum turns ratio of an interphase reactor (IPR) with a double-tap changer is presented with mathematical analysis. The relation between the total harmonic distortion (THD) of the input current and the turns ratio is introduced, and based on the relation, the optimum turns ratio when the THD is minimal is obtained. Via another relation between the ripple coefficients of the output voltage and the turns ratio, the optimum turns ratio is derived when the ripple coefficient is minimal. Meanwhile, using the optimum turns ratio, a new formula to calculate the critical value of IPR is written. Some computer simulation results and experiments are included to support the theoretical analysis of optimum design. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371863 [article] Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier [texte imprimé] / Shiyan, Yang, Auteur ; Fangang, Meng, Auteur ; Wei, Yang, Auteur . - 2011 . - pp. 3022 - 3029. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3022 - 3029 Mots-clés : Double-tag changer Interphase reactor (IPR) Multipulse rectifier Optimum turns ratio Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, the optimum turns ratio of an interphase reactor (IPR) with a double-tap changer is presented with mathematical analysis. The relation between the total harmonic distortion (THD) of the input current and the turns ratio is introduced, and based on the relation, the optimum turns ratio when the THD is minimal is obtained. Via another relation between the ripple coefficients of the output voltage and the turns ratio, the optimum turns ratio is derived when the ripple coefficient is minimal. Meanwhile, using the optimum turns ratio, a new formula to calculate the critical value of IPR is written. Some computer simulation results and experiments are included to support the theoretical analysis of optimum design. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371863

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