Results 51 to 60 of about 179 (176)

New modelling of photovoltaic power integration system and its control strategy for medium-voltage DC distribution network

The Journal of Engineering, 2019
Here, a novel photovoltaic power integration system based on LLC resonant converters is proposed for medium-voltage DC distribution network, which exhibits a feasible and efficient solution for large-scale solar energy integrating into DC grids.
Jiaxi Chen, Daozhuo Jiang, Rui Yin, Yiqiao Liang   +3 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

FEA‐Based Optimisation of an Inserted‐Shunt Integrated Planar Transformer for a Bidirectional CLLLC Resonant Converter

IET Power Electronics
This paper presents an optimisation method for an inserted‐shunt integrated planar transformer based on 3D simulation in Ansys Maxwell. The optimisation objective is enhanced efficiency and power density for the transformer. Thermal analysis verifies the
Sajad A. Ansari, Jonathan N. Davidson, Martin P. Foster   +2 more
doaj   +1 more source

State-variable and cyclic-averaging analysis of bidirectional CLLC resonant converters

The Journal of Engineering, 2019
The study proposes the application of state variable and cyclic-averaging modelling techniques for analysis of bidirectional, dual active bridge, CLLC resonant converters.
Lais Farias Martins, David A. Stone, Martin P. Foster   +2 more
doaj   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Analysis, design, and reliability evaluation of a modified multi‐port quasi‐resonant converter with high gain

IET Power Electronics
High‐gain converters play a vital role in all industrial applications such as automobiles, motor drives, renewable energy systems, and railway transportation sectors. The conventional converters have low gain owing to high‐voltage stress on active MOSFET,
Sampath Harini, Chellammal Nallaperumal, Alireza Hosseinpour   +2 more
doaj   +1 more source

Three-phase fixed-frequency interleaved (LC)(L)-type series-resonant converter with a capacitive output filter

The Journal of Engineering, 2019
A three-phase interleaved (LC)(L)-type dc–dc series-resonant converter with a capacitive output filter using fixed frequency control is proposed. The converter operations for different modes during different intervals have been presented using the ...
Mohamed Almardy, Ashoka K.S. Bhat
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Efficiency‐Oriented Control of LLC Resonant Converter for Grid‐Connected Inverter

IET Renewable Power Generation
This study proposes an efficiency‐oriented control approach for an LLC resonant converter‐based high‐frequency‐link grid‐connected inverter. The proposed topology has two stages.
Cagdas Hisar, Necmi Altin, Saban Ozdemir, Ibrahim Sefa   +3 more
doaj   +1 more source

Short-circuit protection of LLC resonant converter using voltages across resonant tank elements

The Journal of Engineering, 2015
This paper describes two methods for the short-circuit protection of the LLC resonant converter. One of them uses the voltage across the capacitor and the other uses the voltage across the inductor of the resonant tank.
Denys Igorovych Zaikin
doaj   +1 more source