Results 11 to 20 of about 842,734 (293)

Voltage Harmonic Reduction for Randomly Time-Varying Source Characteristics and Voltage Harmonics [PDF]

open access: yesIEEE Transactions on Power Delivery, 2006
Potential applications of probabilistic modeling of current and voltage harmonics concern many aspects of power system engineering as accurate prediction of power system harmonic behavior provides important information to utility companies and equipment designers.
Zobaa, AF
openaire   +4 more sources

Multipurpose Compensation Scheme for Voltage Sag/Swell and Selective Harmonics Elimination in Distribution Systems [PDF]

open access: yesAdvances in Electrical and Electronic Engineering, 2018
Voltage harmonics, sag, and swell are the most harmful disturbances in distribution systems. This paper introduces a novel effective controller method for simultaneous compensation of both voltage sag/swell and voltage harmonics by using multifunctional ...
Mustafa Inci   +4 more
doaj   +3 more sources

Investigations of power quality problems in modern buildings [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.This thesis presents the results of measurements made in a typical office building (Tower A) and a Residential building (Kilmorey Hall), all located in the ...
Olatoke, Abraham
core   +7 more sources

Experimental Analysis on Influences of Harmonic Voltage at High-Voltage Network on Harmonic Current at Medium-Voltage Network [PDF]

open access: yesJournal of International Council on Electrical Engineering, 2012
In this paper, we describe how harmonic voltage in transmission networks influences harmonic currents in distribution networks. In the conventional equivalent circuit for harmonic analysis based on computer simulations, harmonic currents in distribution networks were regarded as a constant harmonic current source.
Junichi Inagaki, Yasuhiro Hayashi
openaire   +1 more source

Modular Multilevel Converter Switching Frequency Harmonics Analysis and Suppression Through Cell Voltage Control

open access: yesIEEE Open Journal of Power Electronics, 2020
This paper investigates the impact of reference's bias on the high frequency voltage spectrum for the modular multilevel converters (MMC). Analytical solution of the voltage spectrum under carrier Phase Shifted Pulse Width Modulation (PSPWM) is derived ...
Lu Wang   +4 more
doaj   +1 more source

A synchronizing signal detection technique for grid voltage based on new CDSOGI-PLL

open access: yesXibei Gongye Daxue Xuebao, 2023
When the grid voltage contains many harmonics, the filtering effect of the phase-locked loop based on dual second-order generalized integrator (DSOGI-PLL) is not ideal, and the frequency of synchronous signal extracted through the DSOGI-PLL fluctuates. A
KE Shanwen, LI Yuren
doaj   +1 more source

Digital Current-Control Schemes [PDF]

open access: yes, 2009
The paper is about comparing the performance of digital signal processor-based current controllers for three-phase active power filters. The wide use of nonlinear loads, such as front-end rectifiers connected to the power distribution systems for dc ...
Limongi, Leonardo   +3 more
core   +1 more source

Harmonics Forecasting of Wind and Solar Hybrid Model Driven by DFIG and PMSG Using ANN and ANFIS

open access: yesIEEE Access, 2023
Grid integration of Renewable Energy Systems (RES) involves various types of power electronics-based converters and inverters. The use of these electronic-based devices results in inducing both current and voltage harmonics to the grid.
Fawaz M. Al Hadi   +2 more
doaj   +1 more source

Harmonic influence analysis of unified power flow controller based on modular multilevel converter

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
The unified power flow controller (UPFC) based on modular multilevel converter (MMC) is the most creative flexible ac transmission system (FACTS) device.
Yubo Yuan   +5 more
doaj   +1 more source

Method of calculating the distortion coefficient sinusoidality of the voltage curve created by three-phase straight lines

open access: yesВестник Самарского государственного технического университета. Серия: Технические науки, 2021
The existing calculation methods in various sources represent rectifier installations as sources of higher harmonics. In this case, the current value of the primary winding of the transformer in the form of rectangles is decomposed into a Fourier series ...
Vyacheslav S. Osipov
doaj   +1 more source

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