Results 11 to 20 of about 9,766 (262)
The Impact of Geomagnetically Produced Negative-Sequence Harmonics on Power Transformers
IEEE Access, 2021 Geomagnetically induced currents (GICs), although small in magnitude, can inflict detrimental effects on power systems. GICs damage transformers, generate unusual harmonics, trip reactive power support equipment, cause protective relays to malfunction ...
Ahmed Abuhussein +1 more
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Modelling and prediction of current harmonics generated by power converters in distribution networks
IET 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
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IEEE 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
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A synchronizing signal detection technique for grid voltage based on new CDSOGI-PLL
Xibei 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
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Advances 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
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Harmonics Forecasting of Wind and Solar Hybrid Model Driven by DFIG and PMSG Using ANN and ANFIS
IEEE 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
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Harmonic voltage measurement error of the capacitor voltage transformer
PLOS 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
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Harmonic influence analysis of unified power flow controller based on modular multilevel converter
Journal 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
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Вестник 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
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Voltage Harmonic Reduction for Randomly Time-Varying Source Characteristics and Voltage Harmonics [PDF]
IEEE 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.
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