Results 41 to 50 of about 106,437 (299)
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Higher-Order Dynamic Mode Decomposition to Identify Harmonics in Power Systems
EnergiesThe proliferation of renewable energy sources and distributed generation systems interfaced to the grid by power electronics systems is forcing us to better understand the issues arising due to the quality of electrical signals generated through these ...
Aboubacar Abdou Dango +4 more
doaj +1 more source
Power Quality Enhancement Using Power Balance Theory Based DSTATCOM
Advances in Electrical and Electronic Engineering, 2016 The DSTATCOM (Distributed Static Compensator) is used for current harmonic mitigation, Power Factor Correction (PFC), reactive power compensation, load balancing and neutral current compensation in the Power Distribution System (PDS).
Jampana Bangarraju +2 more
doaj +1 more source
Sensorless AC Capacitor Voltage Monitoring Method for HAPF
IEEE Access, 2023 This study presents a method for monitoring the voltage across the AC capacitor in a grid-connected hybrid active power filter without the use of additional voltage sensors. In the case of an AC capacitor used in a hybrid, active power filter, there is a
Hyunjae Lee, Jingeun Shon
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Advanced Engineering Materials, EarlyView.Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch +3 more
wiley +1 more source
, 2006 Current and voltage waveforms of a distribution or a transmission system are not pure sinusoids. There are distortions in these waveforms that consist of a combination of the fundamental frequency, harmonics and high frequency transients.
Zamanan, N. +2 more
core +1 more source
Analysis of symmetrical components of harmonics for three phase power systems [PDF]
, 1986 Includes bibliographical references.Harmonic distortion of three phase power systems is caused by large amounts of electric power consumers using power electronic installations (e.g. drives and rectifiers). It has a number of undesirable consequences and
Shum, Kwan Leung
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Advanced Engineering Materials, EarlyView.Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali +5 more
wiley +1 more source
International Journal of Renewable Energy DevelopmentElevated winding insulation temperature, driven by harmonic distortions, is a key factor in transformer lifespan reduction. Conventional models often oversimplify the effect of combined current and voltage harmonics.
Muhammad Haziq Mohd Wazir +4 more
doaj +1 more source
Proceedings of the American Mathematical Society, 1989 Existence of generalized functions (called Boehmians) satisfying the Laplace equation which are not C ∞
openaire +3 more sources