Documents disponibles écrits par cet auteur

An optimized space vector modulation sequence for improved harmonic performance / Mehrizi-Sani, Ali in IEEE transactions on industrial electronics, Vol. 56 N° 8 (Août 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N° 8 (Août 2009) . - pp. 2894 - 2903 Titre : An optimized space vector modulation sequence for improved harmonic performance Type de document : texte imprimé Auteurs : Mehrizi-Sani, Ali, Auteur ; Filizadeh, Shaahin, Auteur Article en page(s) : pp. 2894 - 2903 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Genetic  algorithms  (GAs)  Harmonic  analysis  Optimization  Space  vector  modulation  (SVM)  Voltage-sourced  converter  (VSC) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a method for optimization of the harmonic performance of converters under space vector modulation (SVM) control. It is shown that SVM provides a number of degrees of freedom, which make it suitable for optimization, subject to desired constraints. An objective function is defined, which seeks to minimize the most significant harmonic components of the generated waveform while keeping other harmonic components within the acceptable range outlined in the available standards. Since the formulation of the problem involves both real and integer variables, specialized optimization methods capable of handling mixed-integer variables need to be employed, and hence, a genetic algorithm optimizer is used to solve the optimization problem. Optimized SVM sequences obtained for various operating points under different sampling frequencies are shown to result in significant reduction of dominant harmonics while maintaining the waveform quality within prescribed limits. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4671111 [article] An optimized space vector modulation sequence for improved harmonic performance [texte imprimé] / Mehrizi-Sani, Ali, Auteur ; Filizadeh, Shaahin, Auteur . - pp. 2894 - 2903. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N° 8 (Août 2009) . - pp. 2894 - 2903 Mots-clés : Genetic  algorithms  (GAs)  Harmonic  analysis  Optimization  Space  vector  modulation  (SVM)  Voltage-sourced  converter  (VSC) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a method for optimization of the harmonic performance of converters under space vector modulation (SVM) control. It is shown that SVM provides a number of degrees of freedom, which make it suitable for optimization, subject to desired constraints. An objective function is defined, which seeks to minimize the most significant harmonic components of the generated waveform while keeping other harmonic components within the acceptable range outlined in the available standards. Since the formulation of the problem involves both real and integer variables, specialized optimization methods capable of handling mixed-integer variables need to be employed, and hence, a genetic algorithm optimizer is used to solve the optimization problem. Optimized SVM sequences obtained for various operating points under different sampling frequencies are shown to result in significant reduction of dominant harmonics while maintaining the waveform quality within prescribed limits. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4671111

Everyday electrical engineering / Mehrizi-Sani, Ali in IEEE transactions on education, Vol. 55 N° 4 (Novembre 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 4 (Novembre 2012) . - pp. 488 - 494 Titre : Everyday electrical engineering : a one-week summer academy course for high school students Type de document : texte imprimé Auteurs : Mehrizi-Sani, Ali, Auteur Année de publication : 2013 Article en page(s) : pp. 488 - 494 Note générale : Education Langues : Anglais (eng) Mots-clés : Electrical  engineering  education  High  school  education  Outreach  Power  engineering  Problem-based  learning  Summer  academy Résumé : A summer academy is held for grade 9-12 high school students at the University of Toronto, Toronto, ON, Canada, every year. The academy, dubbed the Da Vinci Engineering Enrichment Program (DEEP), is a diverse program that aims to attract domestic and international high school students to engineering and sciences (and possibly recruit them). DEEP also provides them with the opportunity to experience the university setting. This paper discusses the organization of DEEP and presents the details of a DEEP course developed to introduce students to electrical engineering. This course is designed for junior (grades 9 and 10) students and includes lectures, hands-on activities (both in a team and individually), and a field trip. The survey results, collected as both formative and summative feedback, indicate the success of the course. This paper also provides recommendations for future offerings of the course. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6177698&sortType%3Das [...] [article] Everyday electrical engineering : a one-week summer academy course for high school students [texte imprimé] / Mehrizi-Sani, Ali, Auteur . - 2013 . - pp. 488 - 494. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 4 (Novembre 2012) . - pp. 488 - 494 Mots-clés : Electrical  engineering  education  High  school  education  Outreach  Power  engineering  Problem-based  learning  Summer  academy Résumé : A summer academy is held for grade 9-12 high school students at the University of Toronto, Toronto, ON, Canada, every year. The academy, dubbed the Da Vinci Engineering Enrichment Program (DEEP), is a diverse program that aims to attract domestic and international high school students to engineering and sciences (and possibly recruit them). DEEP also provides them with the opportunity to experience the university setting. This paper discusses the organization of DEEP and presents the details of a DEEP course developed to introduce students to electrical engineering. This course is designed for junior (grades 9 and 10) students and includes lectures, hands-on activities (both in a team and individually), and a field trip. The survey results, collected as both formative and summative feedback, indicate the success of the course. This paper also provides recommendations for future offerings of the course. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6177698&sortType%3Das [...]