Results 21 to 30 of about 4,960,323 (312)

Minimization of total harmonic distortions of cascaded H-bridge multilevel inverter by utilizing bio inspired AI algorithm

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
Minimizing total harmonic distortion (THD) with less system complexity and computation time is a stringent constraint for many power systems. The multilevel inverter can have low THD when switching angles are selected at the fundamental frequency.
Muhammad Salman   +7 more
doaj   +1 more source

Fast-individual-harmonic-extraction technique [PDF]

open access: yes, 2005
One outcome of a PhD project (C H Ng, University studentship) A collaborative work (the Energy Systems Group, Northumbria and Durham University). It deals with the problem of harmonic suppression or elimination in power systems for safety and power ...
Busawon, Krishna   +7 more
core   +1 more source

Power quality investigation of CHB nine‐level converter based large‐scale solar PV system with different modulation schemes

open access: yesEnergy Conversion and Economics, 2021
Multilevel converters (MLCs) are extensively used in solar photovoltaic (SPV) applications owing to their advantages such as low total harmonic distortion (THD) in the converter voltage, reduction in device stress, and switching losses.
Jyoti Kulkarni   +3 more
doaj   +1 more source

Theoretical Analysis of a Fractional-Order LLCL Filter for Grid-Tied Inverters

open access: yesFractal and Fractional, 2023
The LLCL-filter-based grid-tied inverter performs better than the LCL-type grid-tied inverter due to its outstanding switching-frequency current harmonic elimination capability, but the positive resonance peak must be suppressed by passive or active ...
Xiaogang Wang   +2 more
doaj   +1 more source

Application of Newton Identities in Solving Selective Harmonic Elimination Problem With Algebraic Algorithms

open access: yesIEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Algebraic algorithms are powerful methods in solving the selective harmonic elimination (SHE) problem, which can find all exact solutions without the requirements of choosing initial values.
Chen-Xu Wang   +5 more
semanticscholar   +1 more source

Comparison and Analysis of Acoustic Features of Western and Chinese Classical Music Emotion Recognition Based on V-A Model

open access: yesApplied Sciences, 2022
Music emotion recognition is increasingly becoming important in scientific research and practical applications. Due to the differences in musical characteristics between Western and Chinese classical music, it is necessary to investigate the distinctions
Xin Wang, Li Wang, Lingyun Xie
doaj   +1 more source

VSC transmission system using flying capacitor multilevel converters and hybrid PWM control [PDF]

open access: yes, 2007
A high-voltage direct current (HVDC) transmission system based on three-level flying capacitor (FC) multilevel converters with hybrid pulse-width modulation (PWM) is presented in this paper.
Agelidis, V.G., Xu, L.
core   +1 more source

Comparison of two solution algorithms of selected harmonics elimination pulse width modulation with multi-band for multi-level inverter

open access: yesGong-kuang zidonghua, 2014
For lack of research of nonlinear and linear solution algorithms of selected harmonics elimination pulse width modulation used in the same level topology of inverter, a nonlinear solution equation based on homotopy algorithm and a linear solution model ...
PAN Hongying, LI Song
doaj   +1 more source

Unified Selective Harmonic Elimination for Multilevel Converters

open access: yesIEEE Transactions on Power Electronics, 2017
For multilevel converters, as their selective harmonic elimination (SHE) equations are highly related to the switching patterns, it is almost impossible to give a complete study for all the switching patterns under the traditional SHE framework.
Kehu Yang   +6 more
openaire   +1 more source

Spectrogram image encoding to provide variable audio data rates and preserve its sound quality

open access: yesБезопасность информационных технологий, 2021
In the applications of audio control and fixation in the conditions of information-technical counteraction, noise clearing, formation of digital watermarks, audio fingerprinting, protective text audio markers, etc., a compact representation of speech ...
Sergey V. Dvoryankin   +3 more
doaj   +1 more source

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