Results 41 to 50 of about 25,983,590 (298)

A Review of Total Harmonic Distortion Factors for the Measurement of Harmonic and Interharmonic Pollution in Modern Power Systems

open access: yesEnergies, 2021
Harmonic distortion is one of the disturbances that most affects the quality of the electrical system. The widespread use of power electronic systems, especially power converters, has increased harmonic and interharmonic emission in a wide range of ...
Angel Arranz-Gimon   +3 more
doaj   +1 more source

Optimizing performance of a reduced switch multi‐level inverter with moth‐flame algorithm and SHE‐PWM

open access: yesThe Journal of Engineering, 2023
Multi‐level inverters are widely used in high‐voltage and high‐power applications due to the increasing demand for renewable energy. This study proposes a novel single‐phase reduced switch multi‐level inverter topology that generates 11 levels of output ...
Ibrahim Haruna Shanono   +3 more
doaj   +1 more source

Harmonic Amplitude Summation for Frequency-tagging Analysis

open access: yesJournal of Cognitive Neuroscience, 2021
In the approach of frequency tagging, stimuli that are presented periodically generate periodic responses of the brain. Following a transformation into the frequency domain, the brain's response is often evident at the frequency of stimulation, F, and ...
Talia L. Retter   +2 more
semanticscholar   +1 more source

Harmonic Analysis of the Ballistocardiogram

open access: yesExperimental Biology and Medicine, 1958
SummaryBallistocardiograms of the Starr and Nickerson type exhibit prominent resonance peaks, and contain no significant frequency components above 10 CPS. Ultra-low-frequency ballistocardiograms are distorted by body resonance to a far lesser degree, and exhibit components to at least 20 CPS.
C R, HONIG, W W, VON WITTERN
openaire   +2 more sources

On an atomic decomposition in Banach spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
An atomic decomposition is considered in Banach space.  A method for constructing an atomic decomposition of Banach  space, starting with atomic decomposition of  subspaces  is presented. Some relations between them are established.
Telman Gasymov, Chingiz Hashimov
doaj  

Study on resonance characteristic of continuous co‐phase traction power supply system

open access: yesIET Generation, Transmission & Distribution, 2023
In order to solve the power quality problems and eliminate the neutral sections in the railway, the implementation of the continuous co‐phase traction power supply system (CCTPSS) is the development trend of the future. However, various parameters of the
Fan Zhong, Shaofeng Xie
doaj   +1 more source

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

open access: yesTehnički Glasnik, 2023
In this paper, the dynamic behavior of a rotor kit with two identical disks located between the plain bearings was analyzed. Modal and harmonic analysis of this rotor kit configuration were performed in the Ansys software package.
Marko Katinić   +3 more
doaj   +1 more source

PQ and Harmonic Assessment Issues on Low-Cost Smart Metering Platforms: A Case Study

open access: yesSensors, 2020
This paper presents a feasibility study on how to implement power quality (PQ) metrics in a low-cost smart metering platform. The study is aimed at verifying the possibility of implementing PQ monitoring in distribution networks without replacing ...
Giovanni Artale   +9 more
doaj   +1 more source

Harmonic Stability in Power Electronic-Based Power Systems: Concept, Modeling, and Analysis

open access: yesIEEE Transactions on Smart Grid, 2019
The large-scale integration of power electronic-based systems poses new challenges to the stability and power quality of modern power grids. The wide timescale and frequency-coupling dynamics of electronic power converters tend to bring in harmonic ...
Xiongfei Wang, F. Blaabjerg
semanticscholar   +1 more source

Power Quality Issues and Mitigation for Electric Grids with Wind Power Penetration

open access: yesApplied Sciences, 2020
Large penetration of wind energy systems into electric-grids results in many power quality problems. This paper presents a classification of power quality issues, namely harmonics and short-duration voltage variation observed due to the integration of ...
Sulaiman A. Almohaimeed   +1 more
doaj   +1 more source

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