Results 81 to 90 of about 1,503,489 (327)

Multi-Point Time-Synchronized Waveform Recording for the Analysis of Wide-Area Harmonic Propagation

open access: yesApplied Sciences, 2020
This paper focuses on studying the phenomenon of harmonic distortion propagation through distribution networks. This phenomenon is governed by a combination of factors involving the nature of harmonic loads and their dynamic interaction, the influence of
Stanislav Babaev   +4 more
doaj   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

open access: yesAdvanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu   +5 more
wiley   +1 more source

Design of mine-used single-phase harmonic suppression system

open access: yesGong-kuang zidonghua, 2016
In view of problem of severe distortion of local current wave caused by increase of low-voltage single-phase electrical equipment, a kind of single-phase harmonic suppression system used in low-voltage system was designed.
LUO Shuke
doaj   +1 more source

Harmonic Distortion in Cochlear Models [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1957
The envelope over the train of waves traveling along the cochlear partition is asymmetrical: the distal slope being steeper than the proximal one [G. von Békésy, J. Acoust. Soc. Am. 19, 452 (1947)]. In experiments on models, this asymmetry was seen to increase with intensity.
openaire   +1 more source

PV Hosting Capacity Dependence on Harmonic Voltage Distortion in Low-Voltage Grids: Model Validation with Experimental Data

open access: yes, 2018
This paper introduces a brief analysis on hosting capacity and related concepts as applied to distribution network systems. Furthermore, it addresses the applicability of hosting capacity study methodologies to harmonic voltage distortion caused by ...
Tiago H. Moreira de Oliveira   +3 more
semanticscholar   +1 more source

About Voltage Total Harmonic Distortion for Single- and Three-Phase Multilevel Inverters

open access: yesIEEE transactions on industrial electronics (1982. Print), 2015
Many recent multilevel inverter papers end up with voltage total harmonic distortion (THD) values obtained from numerical voltage spectrum calculations (measurements).
A. Ruderman
semanticscholar   +1 more source

Multiple sets of solutions for harmonic elimination PWM bipolar waveforms: Analysis and experimental verification [PDF]

open access: yes, 2006
Multiple sets of solutions for the selective harmonic elimination pulse-width modulation method for inverter control exist. These sets present an independent solution to the same problem but further investigation reveals that certain sets may offer an ...
Agelidis, VG   +7 more
core   +1 more source

Thermoresponsive Liquid Crystalline Polymer Coatings Programmed by Field‐Induced Topological Defects for Tunable Optical and Topographical Responses

open access: yesAdvanced Functional Materials, EarlyView.
Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto   +6 more
wiley   +1 more source

A novel hybrid PWM algorithm having superior harmonic performance

open access: yesIngeniería e Investigación, 2009
This paper presents a novel hybrid modulation algorithm which improves the harmonic performance of eight of the most common pulse width modulation (PWM) algorithms for voltage source inverters (VSI) in the electric drive field. From harmonic a-nalysis of
Diana Jimena López Mesa   +4 more
doaj  

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon   +4 more
wiley   +1 more source

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