Results 21 to 30 of about 19,077 (223)

Performance evaluation of hybrid multilevel inverter with a high-frequency switching technique

Journal of Engineering and Applied Science, 2023
This proposed work deals with the implementation of a single-phase topology with using hybrid for multilevel inverters. It is observed that the proposed structure improves the performance of the hybrid multilevel inverter with high-frequency switches for
B. Pragathi, Sonu Kumar, P Rajani Kumari, Arvind R. Singh   +3 more
doaj   +1 more source

Analisis Tegangan Sag Pada Sistem Distribusi GI Sengkaling Penyulang Pujon Menggunakan Kompensasi DVR

Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2020
Makalah ini mendiskusikan tentang analisis tegangan sag dalam sistem distribusi. Tegangan sag disebabkan gangguan hubung singkat 1 fasa ke tanah. Tegangan sag memberikan dampak kerusakan pada beban Pujon.
Arief Trisno Eko S, Wijono Wijono, Bambang Siswojo   +2 more
doaj   +1 more source

Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation

IET Power Electronics, 2021
As one of the most representative series active compensators, dynamic voltage restorer (DVR) can solve voltage‐related power quality uses effectively. The in‐phase voltage control and energy‐optimised control are the two typical control strategies of DVR.
Qi Guo, Chunming Tu, Fei Jiang, Rongwu Zhu, Fan Xiao, Cheng Chen   +5 more
doaj   +1 more source

Attenuation of Zero Sequence Voltage Using a Conventional Three-Wire Dynamic Voltage Restorer

Energies, 2021
Voltage sags/swells and harmonics are recurring problems in electric energy distribution systems. In order to solve these issues, several dynamic voltage restorer (DVR) topologies, such as the conventional three-wire DVR, have been proposed in the ...
Rafael Neto, Yandi Landera, Francisco Neves, Helber de Souza, Marcelo Cavalcanti, Gustavo Azevedo   +5 more
doaj   +1 more source

Effect of Direct Vertebral Rotation on the Uninstrumented Lumbar Curve in Thoracic Adolescent Idiopathic Scoliosis [PDF]

Asian Spine Journal, 2017
Study DesignRetrospective study.PurposeTo determine the effect and direction of direct vertebral rotation (DVR) in the lowest instrumented vertebra (LIV) on the uninstrumented lumbar curve depending on the lumbar modifier used for the correction of ...
Sung-Soo Kim, Jung-Hoon Kim, Se-Il Suk
doaj   +1 more source

Safe Operation Area of Energy-Storage-Free Dynamic Voltage Restorer

Zhongguo dianli, 2022
Energy-storage-free dynamic voltage restorer (DVR) is a common device used to solve voltage sag problems in engineering, but its actual operation is limited by the parameters of application scenarios.
Mingxing ZHU, Xuan LU, Huaying ZHANG, Qing WANG   +3 more
doaj   +1 more source

Bökstedt periodicity and quotients of DVRs

Compositio Mathematica, 2022
In this paper we compute the topological Hochschild homology of quotients of discrete valuation rings (DVRs). Along the way we give a short argument for Bökstedt periodicity and generalizations over various other bases. Our strategy also gives a very efficient way to redo the computations of
Krause, Achim, Nikolaus, Thomas
openaire   +3 more sources

sj-pdf-1-dvr-10.1177_14791641211046522 – Supplemental Material for Peripheral oscillometric arterial performance does not depict coronary status in patients with type 2 diabetes mellitus

, 2021
Supplemental Material, sj-pdf-1-dvr-10.1177_14791641211046522 for Peripheral oscillometric arterial performance does not depict coronary status in patients with type 2 diabetes mellitus by Magdalene Jaeger, Bernd Stratmann and Diethelm Tschoepe in ...
Diethelm Tschoepe (414941), Magdalene Jaeger (11779367), Bernd Stratmann (414939)   +2 more
core   +1 more source

Aortic root enlargement in patients undergoing mitral and aortic replacement: early outcomes in a sub-Saharan population

Frontiers in Cardiovascular Medicine, 2023
IntroductionAortic root enlargement (ARE) is often required to avoid patient–prosthesis mismatch (PPM) in young patients undergoing aortic surgery, including those undergoing combined mitral and aortic valve replacement (double valve replacement, DVR ...
Charles Mve Mvondo, Charles Mve Mvondo, Charles Mve Mvondo, Carole Tchokouani Djientcheu, Laurence Carole Ngo Yon, Laurence Carole Ngo Yon, Douglas Nkomo Banga, Richard Mbele, Amos Bella Ela, Alessandro Giamberti, Alessandro Frigiola, Alain Patrick Menanga, Vincent De Paul Djientcheu, Vincent De Paul Djientcheu, Marcelin Ngowe Ngowe   +14 more
doaj   +1 more source

sj-pdf-1-dvr-10.1177_14791641211070281 – Supplemental Material for Function outperforms morphology in the assessment of muscular contribution to insulin sensitivity in premenopausal women

, 2022
Supplemental Material, sj-pdf-1-dvr-10.1177_14791641211070281 for Function outperforms morphology in the assessment of muscular contribution to insulin sensitivity in premenopausal women by Lorena Wanger, Christina Gar, Michaela Rippl, Stefanie Kern ...
Stefanie Haschka (9656431), Jochen Seissler (107978), Stefanie Kern-Matschilles (9656437), Andreas Lechner (476150), Christina Gar (9656428), Lorena Wanger (13892036), Nina Hesse (7154033), Michaela Rippl (13892039), Anne Potzel (13892042)   +8 more
core   +1 more source