Cristin-resultat-ID: 1937922
Sist endret: 9. juni 2022, 17:36
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Resistive Shaping of Interconnected Low-Voltage Microgrids Operating Under Distorted Voltages

Bidragsytere:
  • Augusto Matheus Dos Santos Alonso
  • Danilo Iglesias Brandao
  • Elisabetta Tedeschi og
  • Fernando Pinhabel Marafao

Tidsskrift

IEEE transactions on industrial electronics (1982. Print)
ISSN 0278-0046
e-ISSN 1557-9948
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Volum: 69
Hefte: 9
Sider: 9075 - 9086

Importkilder

Scopus-ID: 2-s2.0-85115694785

Beskrivelse Beskrivelse

Tittel

Resistive Shaping of Interconnected Low-Voltage Microgrids Operating Under Distorted Voltages

Sammendrag

Beyond the impacting presence of non-linear loads, low-voltage microgrids also experience low energy efficiency and resonance phenomena when operating interconnected to a distribution grid that suffers from distorted voltages. This paper proposes a model-free control strategy capable of coordinating inverters existing within a dispatchable microgrid, allowing to operate it as a single-controllable entity that behaves like a resistor at selected harmonic frequencies. Such resistive shaping uses a centralized control architecture to steer inverters to distributively compensate reactive and harmonic currents, supporting active current sharing. Consequently, the microgrid point-of-common-coupling operates with a high power factor when the grid imposes distorted voltages. Additionally, if resonant components exist, the strategy supports harmonic resonance damping, which minimizes deterioration of voltage quality. For instance, comparative results show that, for the considered scenario, the proposed resistive shaping damps resonances up to 50% better than a previous approach that compensates harmonics using sinusoidal current synthesis. Simulation results carried out on a three-phase low-voltage microgrid testbench, considering three inverters, demonstrate the above-mentioned capabilities of the proposed approach. Experimental results based on a single-phase microgrid prototype comprising two inverters with two linear loads and one non-linear load validate the applicability of the method to real-life implementations.

Bidragsytere

Inaktiv cristin-person

Augusto Matheus Dos Santos Alonso

  • Tilknyttet:
    Forfatter
    ved Institutt for elkraftteknikk ved Norges teknisk-naturvitenskapelige universitet

Danilo Iglesias Brandao

  • Tilknyttet:
    Forfatter
    ved Universidade Federal de Minas Gerais

Elisabetta Tedeschi

  • Tilknyttet:
    Forfatter
    ved Institutt for elkraftteknikk ved Norges teknisk-naturvitenskapelige universitet
  • Tilknyttet:
    Forfatter
    ved Università degli Studi di Trento

Fernando Pinhabel Marafao

  • Tilknyttet:
    Forfatter
    ved Universidade Estadual Paulista 'Julio de Mesquita Filho'
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