Results 91 to 100 of about 82,024 (310)

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Research of Harmonic Elimination and Reactive Power Compensation of Mine Electricity Grid and Its Application

open access: yesGong-kuang zidonghua, 2012
For problems of voltage and current distortion and capacity waste of grid caused by harmonic pollution, power quality testing and analysis were given, and a scheme of using SVG for harmonic elimination and reactive power compensation were proposed ...
GUO Jin-long, LV Jing-jiang, WANG Yi-lei
doaj  

Gouy phase compensation in quasi-phase matching [PDF]

open access: yes, 2008
In any focussed nonlinear interaction the focus induced phase shift, known as the Gouy phase shift, provides an imperfection in phase matching for any linearly invariant material.
Belmonte   +8 more
core   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz   +2 more
wiley   +1 more source

Adaptive Selective Harmonic Elimination Model Predictive Control for Three-Level T-Type Inverter

open access: yesIEEE Access, 2020
In this work, an adaptive selective harmonic elimination model predictive control (ASHEMPC) method for a 3L-T type inverter is proposed. This algorithm is based on model predictive control (MPC), introduces adaptive selective harmonic elimination (ASHE ...
Jianfeng Hong, Renxian Cao
doaj   +1 more source

A Hybrid Active Filter Using the Backstepping Controller for Harmonic Current Compensation [PDF]

open access: yes, 2019
This document presents a new hybrid combination of filters using passive and active elements because of the generalization in the use of non-linear loads that generate harmonics directly affecting the symmetry of energy transmission systems that ...
Ababssi, Najib   +3 more
core   +1 more source

Torsional Interaction Studies on a Power System Compensated by SSSC and Fixed Capacitor [PDF]

open access: yes, 2003
In this paper, a static synchronous series compensator (SSSC), along with a fixed capacitor, is used to avoid torsional mode instability in a series compensated transmission system.
Ghosh, Arindam   +2 more
core   +2 more sources

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

open access: yesAdvanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger   +9 more
wiley   +1 more source

Comparison of Reactive Power Compensation Methods in an Industrial Electrical System with Power Quality Problems

open access: yesElectricity
This paper compares concentrated and distributed reactive power compensation to improve the power factor at the point of common connection (PCC) of an industrial electrical system (IES) with harmonics.
Salim Adolfo Giha Yidi   +4 more
doaj   +1 more source

An Improved Centralized Control Structure for Compensation of Voltage Distortions in Inverter-Based Microgrids

open access: yesEnergies, 2018
Recently, increased use of non-linear loads has intensified the harmonic distortion and voltage unbalance in distribution systems. Inverter Based Distributed Generators (IBDGs) can be employed as distributed compensators to improve the power quality, as ...
Morteza Afrasiabi, Esmaeel Rokrok
doaj   +1 more source

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