Reactive power injection strategies for three-phase four-wire inverters under symmetrical voltage sags
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Universidade Federal de Minas Gerais
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Current grid requirements tend to change in near future to accommodate more distributed generation units in the distribution power system without impairing its power quality. It is expected that the generators remain connected during voltage sags and provide ancillary services, such as reactive power injection, ensuring the operational stability of the electrical system. This work explores strategies for reactive power injection of three-phase four-wire distributed generation systems using natural (abc) coordinates. Constant current peak control, constant active current control and constant average active power control strategies are addressed in a grid-tied inverter under low-voltage ride through conditions. The design and implementation of the proposed power injection strategies are discussed and their effectiveness and technical viability are analyzed through computational simulations.
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Electronic, Fator de potência, Potência reativa (Engenharia elétrica)
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Power quality , Inverters , Reactive power , Current control , Generators , Power control , Simulation, Grid-connected distribution system , grid requirements , low voltage ride through , reactive power injection , three-phase inverter, Reaction Scheme , Power Injection , Voltage Sag , Three-phase Inverter , Control Strategy , Active Control , Computer Simulations , Constant Current , Peak Current , Current Control , Power Control , Microgrid , Constant Power , Power Quality , Grid Current , Current Control Strategies , Power Distribution System , Power Control Scheme , Distributed Generation Units , Pulse Width , Photovoltaic System , Nominal Power , Active Power Injection , Reactive Current , Under Voltage , Maximum Power Point Tracking , Neutral Current , Grid Code , Unity Power Factor , Photovoltaic Inverter
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https://ieeexplore.ieee.org/document/8257259