Results 151 to 160 of about 45,153 (318)
Advanced Materials, EarlyView.Mechanically origami‐coded 3D kirigami photovoltaics convert a single extension–release cycle into deterministic self‐folding, reconfiguring planar solar cells into programmable 3D modules. Distinct coding strategies enable either ultrahigh stretchability (500% system strain) or ultrahigh initial effective areal coverage (225%).
Seok Joon Hwang +15 more
wiley +1 more source
Simulation Study of High Step-Up Quasi-Z-Source DC-DC Converter with Synchronous Rectification
This paper discusses the performance improvement method of the recently popular galvanically isolated quasi-Zsource DC-DC converter. In order to decrease the conduction losses in the quasi-Z-source network and voltage doubler rectifier the replacement of
Zaķis, Jānis +2 more
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Advanced Materials, EarlyView.A transparent, deformable stevia–PVA hydrogel triboelectric nanogenerator delivers significantly enhanced mechanical strength and electrical output through biomimetic hydrogen‐bonded networks. Coupled with machine learning–assisted signal recognition, the self‐powered hydrogel enables accurate human‐motion sensing for intelligent wearable and IoT ...
Thien Trung Luu +5 more
wiley +1 more source
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
800 V DC-DC power supply for gate driver of a common two transistor leg of VSI
This paper presents use of a classical flyback DC DC converter topology for supplying power IGBT gate drive circuit and communication lines from high voltage DC link in modular common tow transistor leg of voltage source inverter – VSI laboratory ...
Galkins, Iļja, Sokolovs, Alvis
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A New Dual- Input Hybrid Buck DC-DC Converter
, 2011 The proposed dual input hybrid buck C/hybrid buck L (HBCL) DC-DC converter, is suitable for power conversion in renewable energy, automotive and telecom power systems. It extends the use of the hybrid DC-DC converters in a dual-input structure, with high
Muntean, N., Gavris, M., Cornea, O.
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Conversores CC-CC bidirecionais isolados simétricos com baixa ondulação de corrente [PDF]
, 2015 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2015Neste trabalho e apresentado o estudo de uma família de conversores CC-CC bidirecionais baseada na ...
Souza, Eduardo Valmir de
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, 2015 The present invention relates to a step-up DC-DC power converter which comprises a primary side circuit and a secondary side circuit coupled through a galvanic isolation barrier. The primary side circuit comprises a positive and a negative input terminal for receipt of an input voltage and an input capacitor coupled between the positive and negative ...
Kovacevic, Milovan +1 more
openaire +1 more source
Additive Manufacturing of Ordered Polymer Nanostructures
Advanced Materials, EarlyView.A new 3D printing strategy, Polymerization‐Induced Arrangement of Nanostructures with Order‐tunability (PIANO), enables the formation of ordered nanostructures in polymer materials by enhancing chain mobility during photopolymerization, overcoming the kinetic arrest that leads to disordered morphologies in the conventional Polymerization‐Induced ...
Di Wu +6 more
wiley +1 more source
Practical Design Guidelines of qZSI Based Step-Up DC/DC Converter
This paper presents some design guidelines for a new voltage fed step-up DC/DC isolated converter. The most significant advantage of proposed converter is voltage buck-boost operation on single stage. The most promising application for proposed converter
Zaķis, Jānis +3 more
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