Current limiting algorithm for three-phase grid-connected inverters

• Autorzy: Tran Tho Quang

Identyfikatory

DOI

10.24425/aee.2022.141671

• Języki publikacji: EN

Abstrakty

EN

Grid-connected inverters are commonly used in systems of renewable energy to convert this energy source into AC power with parameters suitable for connection to the grid. In the normal operating conditions, the grid-connected inverters mainly generate active power to the grid. However, when a voltage sag or voltage imbalance occurs, the grid voltage imbalance in the conventional control methods causes negative sequence components and increases the output current magnitude of inverters. The increase of current can damage power semiconductor devices. This paper presents a strategy to limit the current magnitude of inverters under unbalanced grid voltage conditions. In this strategy, a multiple-complex-coefficient filter is used to eliminate the negative sequence voltage components. This method does not require any additional hardware. A three-phase gridconnected photovoltaic inverter system using a solar array of 20 kWp is also used for the survey. The effectiveness has been validated when comparing the simulation results on Matlab/Simulink of the proposed method with those of the conventional method.

Słowa kluczowe

EN

current limitation; negative sequences; reactive power compensation; three-phase grid-connected inverter; unbalanced voltages

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2022
• Tom: Vol. 71, nr 3
• Strony: 559--579
• Opis fizyczny: Bibliogr. 33 poz., rys., tab.

Twórcy

autor

Tran Tho Quang

• Hochiminh City University of Technology and Education, Vietnam

• https://orcid.org/0000-0003-0973-5380

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).