Centralized Control of Distributed Single-Phase Inverters Arbitrarily Connected to Three-Phase Four-Wire Microgrids
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Data
2017-01-01
Autores
Brandao, Danilo I.
Caldognetto, Tommaso
Marafao, Fernando P. [UNESP]
Simoes, Marcelo G.
Pomilio, Jose A.
Tenti, Paolo
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Editor
Ieee-inst Electrical Electronics Engineers Inc
Resumo
This paper proposes an effective technique to control the power flow among different phases of a three-phase four-wire distribution power system by means of single-phase converters arbitrarily connected among the phases. The aim is to enhance the power quality at the point-of-common-coupling of a microgrid, improve voltage profile through the lines, and reduce the overall distribution losses. The technique is based on a master/slave organization where the distributed single-phase converters act as slave units driven by a centralized master controller. Active, reactive, and unbalance power terms are processed by the master controller and shared proportionally among distributed energy resources to achieve the compensation target at the point-of-common-coupling. The proposed control technique is evaluated in simulation considering the model of a real urban power distribution grid under non-sinusoidal and asymmetrical voltage conditions. The main results, concerning both steady-state and transient conditions, are finally reported and discussed.
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Palavras-chave
Line-interactive inverter, master/slave control, microgrid, power flow control, unbalance compensation
Como citar
Ieee Transactions On Smart Grid. Piscataway: Ieee-inst Electrical Electronics Engineers Inc, v. 8, n. 1, p. 437-446, 2017.