Documents disponibles écrits par cet auteur

Integrated magnetic self-driven ZVS nonisolated full-bridge converter / Jin, Ke 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. 1615 - 1623 Titre : Integrated magnetic self-driven ZVS nonisolated full-bridge converter Type de document : texte imprimé Auteurs : Jin, Ke, Auteur ; Sun, Yi, Auteur ; Xu, Ming, Auteur Année de publication : 2011 Article en page(s) : pp. 1615 - 1623 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Self-driven  Soft  switching  Voltage  regulator  (VR) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a high-efficiency high-power-density voltage regulator (VR). An integrated magnetic self-driven full-bridge topology is employed as the main circuit. The proposed VR runs at a 700-kHz switching frequency for a 1 Unit Height (1U) form factor. A novel synchronous rectifier drive method is used to achieve high efficiency. The direct current resistance (DCR) current-sensing method is used for the integrated transformer to achieve adaptive voltage position. Compared with the traditional multiphase buck converter, the proposed solution has higher efficiency, a smaller passive component footprint, and a lower device cost. A 1U 700-kHz VR prototype is built in the laboratory, and it achieves 88.2% efficiency at a 1.2-V/130-A output. The experimental result verifies the theoretical analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229208 [article] Integrated magnetic self-driven ZVS nonisolated full-bridge converter [texte imprimé] / Jin, Ke, Auteur ; Sun, Yi, Auteur ; Xu, Ming, Auteur . - 2011 . - pp. 1615 - 1623. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 5 (Mai 2010) . - pp. 1615 - 1623 Mots-clés : Self-driven  Soft  switching  Voltage  regulator  (VR) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a high-efficiency high-power-density voltage regulator (VR). An integrated magnetic self-driven full-bridge topology is employed as the main circuit. The proposed VR runs at a 700-kHz switching frequency for a 1 Unit Height (1U) form factor. A novel synchronous rectifier drive method is used to achieve high efficiency. The direct current resistance (DCR) current-sensing method is used for the integrated transformer to achieve adaptive voltage position. Compared with the traditional multiphase buck converter, the proposed solution has higher efficiency, a smaller passive component footprint, and a lower device cost. A 1U 700-kHz VR prototype is built in the laboratory, and it achieves 88.2% efficiency at a 1.2-V/130-A output. The experimental result verifies the theoretical analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229208

Robust control and time-domain specifications for systems of delay differential equations via eigenvalue assignment / Sun, Yi in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 132 N° 3 (Mai 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 3 (Mai 2010) . - 07 p. Titre : Robust control and time-domain specifications for systems of delay differential equations via eigenvalue assignment Type de document : texte imprimé Auteurs : Sun, Yi, Auteur ; Patrick W. Nelson, Auteur ; A. Galip Ulsoy, Auteur Année de publication : 2010 Article en page(s) : 07 p. Note générale : Systèmes dynamiques Langues : Anglais (eng) Mots-clés : Delay-differential  systems  Differential  equations  Eigenvalues  and  eigenfunctions  Linear  systems  Matrix  algebra  Robust  control  Time-domain  analysis  Transient  response Index. décimale : 629.8 Résumé : An approach to eigenvalue assignment for systems of linear time-invariant (LTI) delay differential equations (DDEs), based upon the solution in terms of the matrix Lambert W function, is applied to the problem of robust control design for perturbed LTI systems of DDEs, and to the problem of time-domain response specifications. Robust stability of the closed-loop system can be achieved through eigenvalue assignment combined with the real stability radius concept. For a LTI system of DDEs with a single delay, which has an infinite number of eigenvalues, the recently developed Lambert W function-based approach is used to assign a dominant subset of them, which has not been previously feasible. Also, an approach to time-domain specifications for the transient response of systems of DDEs is developed in a way similar to systems of ordinary differential equations using the Lambert W function-based approach. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013200 [...] [article] Robust control and time-domain specifications for systems of delay differential equations via eigenvalue assignment [texte imprimé] / Sun, Yi, Auteur ; Patrick W. Nelson, Auteur ; A. Galip Ulsoy, Auteur . - 2010 . - 07 p. Systèmes dynamiques Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 3 (Mai 2010) . - 07 p. Mots-clés : Delay-differential  systems  Differential  equations  Eigenvalues  and  eigenfunctions  Linear  systems  Matrix  algebra  Robust  control  Time-domain  analysis  Transient  response Index. décimale : 629.8 Résumé : An approach to eigenvalue assignment for systems of linear time-invariant (LTI) delay differential equations (DDEs), based upon the solution in terms of the matrix Lambert W function, is applied to the problem of robust control design for perturbed LTI systems of DDEs, and to the problem of time-domain response specifications. Robust stability of the closed-loop system can be achieved through eigenvalue assignment combined with the real stability radius concept. For a LTI system of DDEs with a single delay, which has an infinite number of eigenvalues, the recently developed Lambert W function-based approach is used to assign a dominant subset of them, which has not been previously feasible. Also, an approach to time-domain specifications for the transient response of systems of DDEs is developed in a way similar to systems of ordinary differential equations using the Lambert W function-based approach. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013200 [...]