Results 41 to 50 of about 5,601 (304)
Novo conversor CC-CA elevador-abaixador de tensão [PDF]
, 2013 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2013Esta tese apresenta uma nova topologia para os conversores CC-CA, que possibilita obter uma tensão ...
Piazza, Gleyson Luiz
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Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi +8 more
wiley +1 more source
Inversor boost trifásico :: teoria, equacionamento, simulação e experimentação / [PDF]
, 1998 Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro ...
Romaneli, Eduardo Félix Ribeiro
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A novel dual-leg DC-DC converter for wide range DC-AC conversion
Automatika, 2022 This paper proposes DC–AC Dual-leg dual-stage Conversion (DDC) and DC–AC Direct single-stage conversions (DSC). Conventional energy conversion system has only two-stage conversion, so it has some drawbacks such as huge power loss, less conversion range ...
K. Suresh, E. Parimalasundar
doaj +1 more source
Closed‐loop waveform control of boost inverter
IET Power Electronics, 2016 The input current of single‐phase inverter typically has an AC ripple component at twice the output frequency, which causes a reduction in both the operating lifetime of its DC source and the efficiency of the system. In this paper, the closed‐loop performance of a proposed waveform control method to eliminate such a ripple current in boost inverter is
Xiao, C, Wang, H, Zhu, G, Tan, SC
openaire +4 more sources
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Conversores CC-CC com elevada taxa de conversão estática [PDF]
, 2014 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2014.Nesse trabalho é introduzida uma nova família de Conversores CC-CC com elevada taxa de conversão estática.
Sá, Franciéli Lima de
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A Novel Single-Stage Buck–Boost Inverter
, 2022 Traditional nonisolated multilevel inverters based on the buck–boost principle usually have some disadvantage such as necessary dead time or capacitor precharging.
Guo, Xiaoqiang +3 more
core +1 more source
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
Maximum Boost Control Method for Single-Phase Quasi-Switched-Boost and Quasi-Z-Source Inverters
Energies, 2017 The maximum boost control method for a single-phase switched-boost inverter (SBI) and single-phase Z-source inverter (ZSI) is proposed in this paper. In the proposed method, the low frequency voltage is added to the constant voltage for generating the ...
Minh-Khai Nguyen, Youn-Ok Choi
doaj +1 more source