Results 41 to 50 of about 347,959 (284)

Analysis of Maximum Load Unbalancing Limits of Cascaded H-Bridge Rectifier Under Unity Power Factor

IEEE Access, 2019
In a cascaded H-bridge rectifier (CHBR), the dc capacitor voltages need to be controlled to balance by the voltage balance controller when the loads are unbalanced.
Zhixuan Gao, Cong Wang, Junqing Fu, Bangbang He, Chen Feng, Qiwei Lu   +5 more
doaj   +1 more source

Vibration Response Analysis of Simply Supported Box Girder Bridge-Maglev Train in Accelerated Test of Changsha Maglev Express

Advances in Materials Science and Engineering, 2020
In order to study and analyze the vibration response of simply supported box girder bridge-maglev vehicle, a 25 m span simply supported box girder bridge of Changsha Maglev Express was selected as the research object.
Xiao Liang, Tianyong Jiang, Yue Hong, Jiabing Zhang, Mai Jiang, Zeyin Wang   +5 more
doaj   +1 more source

A High TCMRR, Inherently Charge Balanced Bidirectional Front-End for Multichannel Closed-Loop Neuromodulation [PDF]

, 2019
This paper describes a multichannel bidirectional front-end for implantable closed-loop neuromodulation. Stimulation artefacts are reduced by way of a 4-channel H-bridge current source sharing stimulator front-end that minimizes residual charge drops in ...
Delgado Restituto, Manuel, Fiorelli, Rafaella, Pérez Prieto, Norberto, Rodríguez Vázquez, Ángel Benito, Valtierra, José Luis   +4 more
core   +1 more source

A three-level common-mode voltage eliminated inverter with single dc supply using flying capacitor inverter and cascaded H-bridge [PDF]

, 2014
A three-level common-mode voltage eliminated in- verter with single dc supply using flying capacitor inverter and cascaded H-bridge has been proposed in this paper.
García Franquelo, Leopoldo, Gopakumar, K., Kumar, P. Roshan, León Galván, José Ignacio, Mathew, K., Rajeevan, P. P.   +5 more
core   +1 more source

Reliability analysis-based investigation of the historical Széchenyi Chain Bridge deck system

Results in Engineering, 2022
Before the recent reconstruction, significant corrosion damages were observed on the deck system of the ∼170-year-old Széchenyi Chain Bridge. Therefore, an advanced reliability analysis-based study is executed to assess the risk of failure of the ...
Balázs Kövesdi, Dénes Kollár, László Dunai, Adrián Horváth   +3 more
doaj   +1 more source

Passivity-based harmonic control through series/parallel damping of an H-bridge rectifier [PDF]

, 2007
Nowadays the H-bridge is one of the preferred solutions to connect DC loads or distributed sources to the single-phase grid. The control aims are: sinusoidal grid current with unity power factor and optimal DC voltage regulation capability.
De Vries, M. M. J.,, Kransse, M. J.,, Liserre, M.,, Monopoli, V. G.,, Scherpen, J. M. A.,   +4 more
core   +4 more sources

Clinical Characteristics and Prognostic Risk Factors for Pediatric B‐Cell Lymphoblastic Lymphoma: A Multicenter Retrospective Cohort Study for China Net Childhood Lymphoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background B‐cell lymphoblastic lymphoma (B‐LBL) represents a rare variety of non‐Hodgkin lymphoma, with limited research on its biology, progression, and management. Methods A retrospective analysis was performed on the clinical characteristics of 256 patients aged ≤18 years who received treatment under the China Net Childhood Lymphoma (CNCL)‐
Zhijuan Liu, Jian Wang, Ling Jin, Yanlong Duan, Fu Li, Yueping Jia, Leping Zhang, Xiaojun Yuan, Wei Liu, Ying Liu, Ansheng Liu, Mincui Zheng, Yunpeng Dai, Lian Jiang, Lirong Sun, Xiaowen Zhai, Rong Liu, Chunju Zhou, Zifen Gao, Yonghong Zhang, Xiaomei Yang   +20 more
wiley   +1 more source

Cascaded H-Bridges Asymmetrical 11-Levels Optimization [PDF]

Journal of Materials Science and Engineering B, 2011
The following dissertation has the aim to investigate this multilevel topology, starting from the basis. The modeling methodology for this converter which is harmonic elimination control will be analyzed. Thus the contribution of this paper can be summarized mainly by the fact that the pre-calculated PWM control used to control the symmetrical ...
null Mohamed Nejib Ben Nasr Khammassi, null Anis Kebir, null Faouzi Ben Ammar   +2 more
openaire   +1 more source

The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability

, 2013
This paper explains the working principles, supported by simulation results, of a new converter topology intended for HVDC applications, called the alternate arm converter (AAC).
Critchley, R, Crookes, W, Green, TC, Hassan, F, Merlin, MMC, Mitcheson, PD, Trainer, DR   +6 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source