Comparison among two-phase three-wire AC off-grid power systems
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Universidade Federal de Minas Gerais
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The update of the power system moves over to connection of small distributed energy resource through grid-interactive converters. The electrifying process of the distribution power system allows the implementation of different grid configurations, such as those based on two-phase three-wire systems that are appealing for residential zones, commercial areas and off-grid systems. The off-grid two-phase three-wire topology can be implemented considering voltages as an extension of the conventional three-phase system (abn), voltages in quadrature (αβn), or voltages with opposite phases (xyn). Then, this paper aims at comparing the three off-grid power system topologies in terms of power quality characteristics, sizing of DC capacitor of grid-connected inverters, sizing of neutral conductor, and integration with the conventional mains. To accomplish those goals, a mathematical approach considering the Conservative Power Theory and computational simulations are shown and discussed.
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Topology , Conductors , Oscillators , Reactive power , Power quality , Capacitors, off-grid power systems , two-phase three-wire systems , utility interface converter , voltages in quadrature, Power System , Two-phase System , Three-wire System , Mathematical Approach , Distributed Energy Resources , Grid Configuration , Root Mean Square Values , Balanced State , Voltage Levels , Microgrid , Load Balancing , Voltage Magnitude , Oscillatory Power , Instantaneous Power , Voltage Conditions , Dc-link Capacitor , DC Link , Voltage Balancing , Power Terms , Power Electronic Devices , Line Current , Neutral Current , Reactive Current , RMS Voltage , Instantaneous Voltage , Linear Load , Power Factor , Mathematical Development , Magnitude Of Oscillations , Current Magnitude
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https://ieeexplore.ieee.org/document/9065785