Results 11 to 20 of about 792,401 (283)
Voltage Harmonic Reduction for Randomly Time-Varying Source Characteristics and Voltage Harmonics [PDF]
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
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Investigations of power quality problems in modern buildings [PDF]
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
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Fast-responding measurements of power system harmonics using discrete and fast fourier transforms with low spectral leakage [PDF]
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
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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
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 gridâconnected power converters need ...
Arash Moradi +5 more
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A synchronizing signal detection technique for grid voltage based on new CDSOGI-PLL
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]
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
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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
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
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
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