Results 81 to 90 of about 946 (192)

Effect of Voltage Fluctuations on Induction Motor Currents

Scientific Journal of Gdynia Maritime University
One of the types of power quality disturbances met in a power system is voltage fluctuations. Cyclic voltage fluctuations are interconnected with the presence of subharmonics and interharmonics – that is components of frequency less than the fundamental
Marcin Pepliński, Piotr Gnaciński
doaj   +1 more source

An Accurate Time-Domain Procedure for Harmonics and Interharmonics Detection

, 2012
[[abstract]]Frequency is an important indicator for the quality of electric power. Accurate spectral decompositions rely much on the correct identification of frequencies of the measured signals.
張文恭;G.W.Chang;陳正一;Chen, Cheng-I
core  

A statistic study of harmonics and interharmonics at a modern wind-turbine

, 2014
The work presents measurements of harmonics and interharmonics from a modern wind turbine over a period of several days, using a conventional power quality monitor.
Kai Yang, E.O. Anders Larsson, Mats Wahlberg, Math H. J. Bollen, Bollen, Math,, Larsson, Anders,, Wahlberg, Mats,, Yang, Kai,   +7 more
core   +1 more source

Speed Variation of a Cage Induction Motor under Square Voltage Modulation

Scientific Journal of Gdynia Maritime University
Cyclic voltage fluctuations can be considered as a superposition of the fundamental voltage component, subharmonic and interharmonic components – that is the components of frequency less than the fundamental one or not being its integer multiple.
Piotr Gnaciński, Damian Hallmann
doaj   +1 more source

Harmonic and interharmonic detection based on adaptive wavelet and improved EWT

Zhejiang dianli
To address the issues of noise sensitivity and over-decomposition when decomposing harmonic signals using empirical wavelet transform （EWT）， a method based on adaptive wavelet denoising and improved EWT is proposed for detecting harmonics and ...
KONG Chuirui, CHEN Fengxian, YANG Lingrui, CHE Yukui, YANG Haixian, XIA Wei, GUO Cheng   +6 more
doaj   +1 more source

Estimation of Wideband Multi-Component Phasors Considering Signal Damping. [PDF]

Sensors (Basel), 2023
Zhao D, Li S, Wang F, Zhao W, Huang S.
europepmc   +1 more source

How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests. [PDF]

Sensors (Basel), 2022
Crotti G, Chen Y, Çayci H, D'Avanzo G, Landi C, Letizia PS, Luiso M, Mohns E, Muñoz F, Styblikova R, van den Brom H.   +10 more
europepmc   +1 more source

Dense-Frequency Signal-Detection Based on the Primal-Dual Splitting Method. [PDF]

Entropy (Basel), 2022
Zheng J, Liao Z, Ma X, Jin Y, Ma H.
europepmc   +1 more source

Estimation of Harmonics, InterHarmonics and Sub-Harmonics in Motor Drive Systems [PDF]

, 2014
Harmonic analysis in power systems is a challenge that is always evolving due to a constantly changing power grid. Advances in power electronics have led to the installation of many new non-linear power loads, such as power converters, arc furnaces and ...
Kerestes, Robert, Kerestes, Robert/RJK
core  

Suppression of Time-Varying Interharmonics Produced by Medium-Frequency Induction Melting Furnaces by a HAPF System

, 2017
This paper describes the design and field implementation of a hybrid active power filter (HAPF) system to suppress time-varying interharmonics injected into the grid by medium-frequency coreless induction melting furnaces (IMFs).
Ermiş, Muammer, Durna, Emre, Yilmaz, Ilker   +2 more
core   +1 more source