Documents disponibles écrits par cet auteur

Digital average current-mode control of PWM DC–DC converters without current sensors / Qiu, Ying in IEEE transactions on industrial electronics, Vol. 57 N° 5 (Mai 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 5 (Mai 2010) . - pp. 1670 - 1677 Titre : Digital average current-mode control of PWM DC–DC converters without current sensors Type de document : texte imprimé Auteurs : Qiu, Ying, Auteur ; Liu, Helen, Auteur ; Xiyou Chen, Auteur Année de publication : 2011 Article en page(s) : pp. 1670 - 1677 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Average  current  estimation  Continuous  conduction  mode  (CCM)  Digital  control  Pulsewidth-modulation  dc-dc  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper introduces a digital average current-mode control technique for pulsewidth modulation dc-dc converters which only rely on voltage sampling. The proposed approach is to estimate inductor current using first-order discrete-time low-pass filter; therefore, the controller can calculate average inductor current in every switching cycle. As a novel technique of predictive average current control, it has been investigated by choosing an appropriate duty ratio to regulate valley inductor current first and then eliminating error between the estimated average inductor current and a reference current in succedent switching cycle. The algorithm is based on a two-loop control structure to achieve an accurate voltage regulation and is derived for three basic converters: buck, boost, and buck-boost. The validity of the proposed approach has been demonstrated by simulation and experimental results on a dc-dc boost converter. DEWEY : 621.38 ISSN : 278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256190 [article] Digital average current-mode control of PWM DC–DC converters without current sensors [texte imprimé] / Qiu, Ying, Auteur ; Liu, Helen, Auteur ; Xiyou Chen, Auteur . - 2011 . - pp. 1670 - 1677. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 5 (Mai 2010) . - pp. 1670 - 1677 Mots-clés : Average  current  estimation  Continuous  conduction  mode  (CCM)  Digital  control  Pulsewidth-modulation  dc-dc  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper introduces a digital average current-mode control technique for pulsewidth modulation dc-dc converters which only rely on voltage sampling. The proposed approach is to estimate inductor current using first-order discrete-time low-pass filter; therefore, the controller can calculate average inductor current in every switching cycle. As a novel technique of predictive average current control, it has been investigated by choosing an appropriate duty ratio to regulate valley inductor current first and then eliminating error between the estimated average inductor current and a reference current in succedent switching cycle. The algorithm is based on a two-loop control structure to achieve an accurate voltage regulation and is derived for three basic converters: buck, boost, and buck-boost. The validity of the proposed approach has been demonstrated by simulation and experimental results on a dc-dc boost converter. DEWEY : 621.38 ISSN : 278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256190