Results 81 to 90 of about 819 (196)

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

Fast-responding measurements of power system harmonics using discrete and fast fourier transforms with low spectral leakage

, 2011
Conventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach.
A. Cruden, Burt, Graeme M., A.J. Roscoe, R. Carter, Carter, R., Cruden, A., Roscoe, Andrew J., G.M. Burt   +7 more
core   +1 more source

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

Deep Learning Based Predictive Compensation of Flicker, Voltage Dips, Harmonics and Interharmonics in Electric Arc Furnaces

, 2022
In this research work, deep machine learning based methods together with a novel data augmentation are developed for predicting flicker, voltage dip, harmonics and interharmonics originating from highly time-varying electric arc furnace (EAF) currents
Ebrahim Balouji (11888834)
core   +1 more source

Operation of an induction motor supplied by voltage with interharmonics

, 2018
W artykule omówiono skutki obecności interharmonicznych, tj. częstotliwości wyższych od częstotliwości podstawowej harmonicznej, niebędących jej całkowitą krotnością, w napięciu zasilającym silnik indukcyjny.
Drabek, T.
core   +1 more source

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

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

Virtual Instrumentation and Educational Platform for Time-Varying Harmonics and Interharmonics Detection

, 2010
[[abstract]]Selection of a suitable method among various techniques for assessment of harmonic and interharmonic components of a measured voltage or current waveform is not an easy task for the students.
C. I Chen;G. W. Chang
core  

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  

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