Results 31 to 40 of about 22,401,602 (289)

Single-Switch High Step-Up Zeta Converter Based on Coat Circuit

IEEE Access, 2021
By the negative influence of parasitic parameters from the components, the voltage step-up capacity of basic dc-dc converters is limited at extremely high duty cycle.
Binxin Zhu, Guanghui Liu, Yao Zhang, Yu Huang, Shishi Hu   +4 more
doaj   +1 more source

High Efficiency Step-Up HVDC Converter for Photovoltaic Generator

Energy Procedia, 2012
Nowadays a way to optimize photovoltaic systems consists in implementing distributed structures, implying the use of electronic devices. In this paper we show performances of improved DC-DC converters able to feed an inverter. Resulting efficiency allow us to consider parallel HVDC architecture connecting independently PV modules with low section ...
Sawicki, J.P., Petit, P., Zegaoui, Abdallah, Aillerie, Michel, Charles, J.P.   +4 more
openaire   +4 more sources

Efficiency improvement and inrush current reduction in a non-isolated DC-DC converter [PDF]

International Journal of Industrial Electronics, Control and Optimization, 2019
DC–DC boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors.
Saeid Moosavi
doaj   +1 more source

A High Step-up Integrated Coupled Inductor-Capacitor DC-DC Converter

IEEE Access, 2021
A high step-up integrated coupled inductor-capacitor DC-DC converter for renewable energy applications has been proposed in this paper. Because of relative low output voltage of renewable energy systems, a high step-up converter is necessary.
Raheel Afzal, Yu Tang, Haisheng Tong, Yingjun Guo   +3 more
doaj   +1 more source

High‐efficiency high step‐up PWM resonant converter

Electronics Letters, 2015
A novel high‐efficiency high step‐up pulse‐width modulation (PWM) resonant converter is proposed. It achieves high‐voltage step‐up by connecting the outputs of the boost converter cell and the isolated single‐ended PWM resonant converter cell in series, and high efficiency by zero current switching for the diode on the secondary side of the transformer
Yaping Cai, Jianping Xu, Zhangyong Chen, Xiang Zhou   +3 more
openaire   +1 more source

Conversores CC-CC não-isolados de alto ganho e de alto rendimento destinados a aplicações fotovoltaicas e baseados no conversor boost com célula de ganho [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2015.Esta dissertação apresenta um estudo sobre conversores cc-cc não-isolados aplicados ao ...
Schmitz, Lenon
core  

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source

Analysis and implementation of an interleaved high step‐up converter with reduced voltage stress an interleaved high step‐up DC‐DC converter with ZVS

IET Renewable Power Generation
A new symmetrical structure of the interleaved converter type is proposed in this paper to obtain high voltage gain. The proposed converter delivers a very high voltage ratio using the coupled inductor technique and switched capacitor, and all this ...
Mohamad Javad Kargaran, Hosein Jafari Raraei, Tohid Nouri, Mahdi Shaneh   +3 more
doaj   +1 more source

Conversores cc-cc de alto ganho de tensão não isolados com rendimento elevado formados pela integração de conversores cc-cc básicos [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.: Este trabalho apresenta o estudo de conversores CC-CC de alto ganho de tensão não isolado e rendimento elevado, baseado em ...
Tanca Villanueva, Moisés Carlos
core  

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source