Results 51 to 60 of about 138,377 (295)

Innovative Bidirectional Isolated High-Power Density On-Board Charge for Vehicle-to-Grid

open access: yesSensors, 2022
This paper deals with developing and implementing a bidirectional galvanically isolated on-board charger of a high-power density. The power density of the new charger was 4 kW/kg and 2.46 kW/dm3, and the maximum efficiency was 96.4% at 3.4 kW. Due to the
Roman Hrbac   +7 more
doaj   +1 more source

Probing the position of the Jakarta metropolitan area in global inter-urban networks through the lens of manufacturing firms [PDF]

open access: yes, 2017
This paper presents an analysis of the position of the Jakarta metropolitan area (JMA) in global inter-urban networks. Our starting point is our aim to provide a more nuanced understanding of the JMA’s connectivity in world city networks (WCNs).
Derudder, Ben   +1 more
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid

open access: yesEnergies, 2019
The special issue “Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid„ on MDPI Energies presents 20 accepted papers, with authors from North and South America, Asia, Europe and Africa, related to the ...
Sergio Saponara, Lucian Mihet-Popa
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

A hybrid online-offline project-based learning model with a tractor hydraulic leveling system case for hydraulic and pneumatic transmission education

open access: yesFrontiers in Education
This study develops a hybrid Project-Based Learning (PBL) model integrating online-offline instruction for Hydraulic and Pneumatic Transmission. Using an intelligent tractor leveling system case, we implemented the approach with 93 undergraduates (test ...
Jiaxin Wang   +5 more
doaj   +1 more source

Modular switched reluctance machines to be used in automotive applications [PDF]

open access: yes, 2018
In the last decades industry, including also that of electrical machines and drives, was pushed near to its limits by the high market demands and fierce competition. As a response to the demanding challenges, improvements were made both in the design and
Szabó, Loránd
core  

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Six-phase dual-interleaved buck-boost converter for high power-density automotive applications

open access: yesThe Journal of Engineering, 2019
This study presents a 30 kW, six-phase dual-interleaved buck-boost converter which uses an interphase transformer together with six buck-boost switching arms hard switched at 75 kHz for electric/hybrid vehicle applications.
P. E. Velázquez-Elizondo   +5 more
doaj   +1 more source

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