Results 71 to 80 of about 514,782 (282)

Application of AC-AC Frequencyconversion Technology Based on SIMADYN-D Controller in Mine Hoist

open access: yesGong-kuang zidonghua, 2010
In order to solve the problem of capacity expanding of electric control system of mine hoist, an application scheme of AC-AC frequency-conversion with vector control based on SIMADYN-D controller and homemade power cabinet was proposed and the interface ...
ZHOU Yu-song, SUN Xiao-juan
doaj  

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Unified Iterative Algorithm for Power Flow of AC/DC System with Multi-Type DC Links

open access: yesCSEE Journal of Power and Energy Systems
As an emerging trend in power grid development, the AC/DC hybrid power grid presents the characteristics of multi-type DC links and large-scale AC/DC interconnection.
Zhiqiang Song   +5 more
doaj   +1 more source

Integrated battery charger for electric scooter [PDF]

open access: yes, 2009
The paper deals with a battery charger integrated into the traction hardware of an electric scooter, for recharging the scooter batteries by means of a single-phase AC source.
Armando, Eric Giacomo   +2 more
core  

Power converters and controllers for UPS applications with backup PEM fuel cell [PDF]

open access: yes, 2008
This paper studies the practical cost-effective DC/DC converter, DC/AC inverter and AC/DC rectifier for an uninterruptible power supply (UPS) system with backup proton exchange membrane fuel cell (PEMFC).
Guo, Y, Wang, H, Zhan, Y, Zhu, J
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

Synthesis of input-rectifierless AC/DC converters [PDF]

open access: yes, 2004
This paper discusses the basic construction procedure and topological possibilities of creating ac/dc converters out of simple dc/dc converters. It is shown that two separately controlled dc/dc converters are sufficient for producing a regulated dc ...
Lai, YM   +4 more
core   +2 more sources

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye   +6 more
wiley   +1 more source

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

open access: yesAdvanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina   +11 more
wiley   +1 more source

Design of an effective energy receiving adapter for microwave wireless power transmission application

open access: yesAIP Advances, 2016
In this paper, we demonstrate the viability of an energy receiving adapter in a 8×8 array form with high power reception efficiency with the resonator of artificial electromagnetic absorber being used as the element.
Peng Xu, Shen-Yun Wang, Wen Geyi
doaj   +1 more source

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