Results 11 to 20 of about 792,401 (283)

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

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

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

open access: yes, 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.
Burt, Graeme M.   +3 more
core   +4 more sources

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

Modelling and prediction of current harmonics generated by power converters in distribution networks

open access: yesIET Generation, Transmission & Distribution, 2021
Predicting current harmonics in distribution networks is essential to find harmonic losses and power quality indices. In order to predict the current harmonics, the effect of grid impedance and voltage distortions on grid‐connected power converters need ...
Arash Moradi   +5 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

An 'active' passive-filter topology for low power DC/AC inverters [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis presents a new output passive filter for voltage source inverter applications which is based on a shunt connected single tuned filter topology ...
Arman, Mahmoud Fayez
core   +7 more sources

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

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   +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 voltage measurement error of the capacitor voltage transformer

open access: yesPLOS ONE, 2018
This paper explores the mechanism for the harmonic voltage measurement error (HVME) of a capacitor voltage transformer (CVT) in a comprehensive way and develops a practical error correction method to improve the harmonic measurement performance of a CVT.
Jian Le, Hao Zhang, Chao Gao, Qian Zhou
openaire   +4 more sources

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