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Voltage harmonic reduction for randomly time-varying source characteristics and voltage harmonics [PDF]

open access: yesIEEE Transactions on Power Delivery, 2006
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted.
Zobaa, AF
core   +3 more sources

Impacts of Grid Voltage Harmonics Amplitude and Phase Angle Values on Power Converters in Distribution Networks

open access: yesIEEE Access, 2021
Motor drive systems based on diode-rectifier are utilised in many industrial and commercial applications due to their cost-effectiveness and simple topology.
Abdulrahman Alduraibi   +2 more
doaj   +1 more source

Waveform Variation Defined Model for Harmonic Current Emissions Including Cross-Order Supply Voltage Harmonics Influence

open access: yesIEEE Access, 2023
The paper reports an experimental non-linear load evaluation regarding current harmonics sensitivity to supply voltage harmonics. A base for the model is proposed relying on the time-domain waveform variations, rather than impedance or conductance ...
Kamran Daniel   +5 more
doaj   +1 more source

Simulation-based analysis of dynamic voltage restorer with sliding mode controller at optimal voltage for power quality enhancement in distribution system

open access: yesElectrical engineering & Electromechanics, 2022
Introduction. Nowadays, power quality issues are of considerable interest to both utilities and end users as they cause significant financial losses to the industrial customers.
S. T. Zahra   +4 more
doaj   +1 more source

Harmonics Detection and its Mitigation in a Doubly Fed Induction Generator based Power System

open access: yesPakistan Journal of Engineering & Technology, 2020
Ideally, electric supplying companies are projected to convey sinusoidal voltage having the frequency of constant rate, while the consumers are expected to extract the current in sinusoidal forms with power factor nearly equal to unity.
Muhammad Kashif   +5 more
doaj   +5 more sources

Measurements and Analysis of Partial Discharges at HVDC Voltage with AC Components

open access: yesEnergies, 2022
This paper presents the methodology for phase-resolved partial discharge measurements in HVDC systems with a DC voltage containing trace AC harmonics or a DC voltage ripple.
Marek Florkowski   +2 more
doaj   +1 more source

Power Quality Analysis of the Output Voltage of AC Voltage and Frequency Controllers Realized with Various Voltage Control Techniques

open access: yesApplied Sciences, 2021
Single-phase and three-phase AC-AC converters are employed in variable speed drive, induction heating systems, and grid voltage compensation. They are direct frequency and voltage controllers having no intermediate power conversion stage.
Naveed Ashraf   +3 more
doaj   +1 more source

The Impact of Geomagnetically Produced Negative-Sequence Harmonics on Power Transformers

open access: yesIEEE 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
doaj   +1 more source

Model-Based Spatial Harmonics Vector Compensation Method for Three-Phase Mutually Coupled Switched Reluctance Machine With Sinusoidal Current Excitation

open access: yesIEEE Open Journal of Power Electronics, 2020
This paper presents a spatial harmonics compensation method for mutually coupled switched reluctance machines (MCSRMs) with sinusoidal current excitation. The regulation by linear controllers to achieve sinusoidal currents in MCSRMs is challenging due to
Peter Azer   +2 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

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