Asymmetrical cascade multilevel converters with noninteger or dynamically changing DC voltage ratios / Lu, Shuai in IEEE transactions on industrial electronics, Vol. 57 N° 7 (Juillet 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 7 (Juillet 2010) . - pp. 2411 - 2418 Titre : Asymmetrical cascade multilevel converters with noninteger or dynamically changing DC voltage ratios : concepts and modulation techniques Type de document : texte imprimé Auteurs : Lu, Shuai, Auteur ; Mariéthoz, Sébastien, Auteur ; Corzine, Keith A., Auteur Article en page(s) : pp. 2411 - 2418 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Asymetrical multilevel converters Multilevel modulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Asymmetrical cascade multilevel inverters offer a high number of voltage levels with a given switch count. For a given topology, the number of levels depends on the configuration of the dc voltage (ratios). This paper deals with the design and control of such converters with noninteger dc voltage ratio, which leads to unevenly distributed space vectors. It describes how to select the dc voltage ratio configurations that yield space vectors as evenly distributed as possible. It describes how to produce an effective PWM modulation that allows generating undistorted current even in the presence of (some) unevenly distributed space vectors. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409616 [article] Asymmetrical cascade multilevel converters with noninteger or dynamically changing DC voltage ratios : concepts and modulation techniques [texte imprimé] / Lu, Shuai, Auteur ; Mariéthoz, Sébastien, Auteur ; Corzine, Keith A., Auteur . - pp. 2411 - 2418. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 7 (Juillet 2010) . - pp. 2411 - 2418 Mots-clés : Asymetrical multilevel converters Multilevel modulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Asymmetrical cascade multilevel inverters offer a high number of voltage levels with a given switch count. For a given topology, the number of levels depends on the configuration of the dc voltage (ratios). This paper deals with the design and control of such converters with noninteger dc voltage ratio, which leads to unevenly distributed space vectors. It describes how to select the dc voltage ratio configurations that yield space vectors as evenly distributed as possible. It describes how to produce an effective PWM modulation that allows generating undistorted current even in the presence of (some) unevenly distributed space vectors. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409616

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Energy harvesting from vibration with alternate scavenging circuitry and tapered cantilever beam / Mehraeen, Shahab 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. 820 - 830 Titre : Energy harvesting from vibration with alternate scavenging circuitry and tapered cantilever beam Type de document : texte imprimé Auteurs : Mehraeen, Shahab, Auteur ; Jagannathan, S., Auteur ; Corzine, Keith A., Auteur Article en page(s) : pp. 820 - 830 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cantilever beam Energy harvesting Piezoelectric Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Piezoelectric transducers are increasingly being used to harvest energy from environmental vibrations in order to either power remote sensors or charge batteries that power the sensors. In this paper, a new voltage compensation scheme for high-voltage-based (> 100 V) energy harvesting is introduced, and its fundamental concepts, as well as the operation details, are elaborated. This scheme, when applied to the voltage inversion method [synchronized switch harvesting on inductor (SSHI)], provides an increase of over 14% in harvested power when compared to the parallel inversion method (parallel SSHI) alone and more than 50% in the case of series inversion method (series SSHI). Second, tapered cantilever beams were shown to be more effective in generating a uniform strain profile over rectangular and trapezoidal beams if they are precisely shaped, resulting in a significant increase in harvested power over available methods in the literature from laboratory experimental tests. In addition, a simplified method to design such a beam is introduced. Finally, a field test of the proposed tapered beam is conducted by using a dozer for earth-moving applications, and experimental results are discussed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345740 [article] Energy harvesting from vibration with alternate scavenging circuitry and tapered cantilever beam [texte imprimé] / Mehraeen, Shahab, Auteur ; Jagannathan, S., Auteur ; Corzine, Keith A., Auteur . - pp. 820 - 830. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 3 (Mars 2010) . - pp. 820 - 830 Mots-clés : Cantilever beam Energy harvesting Piezoelectric Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Piezoelectric transducers are increasingly being used to harvest energy from environmental vibrations in order to either power remote sensors or charge batteries that power the sensors. In this paper, a new voltage compensation scheme for high-voltage-based (> 100 V) energy harvesting is introduced, and its fundamental concepts, as well as the operation details, are elaborated. This scheme, when applied to the voltage inversion method [synchronized switch harvesting on inductor (SSHI)], provides an increase of over 14% in harvested power when compared to the parallel inversion method (parallel SSHI) alone and more than 50% in the case of series inversion method (series SSHI). Second, tapered cantilever beams were shown to be more effective in generating a uniform strain profile over rectangular and trapezoidal beams if they are precisely shaped, resulting in a significant increase in harvested power over available methods in the literature from laboratory experimental tests. In addition, a simplified method to design such a beam is introduced. Finally, a field test of the proposed tapered beam is conducted by using a dozer for earth-moving applications, and experimental results are discussed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345740

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