Comparative Analysis of Three-Phase PV Grid Connected Inverter Current Control Schemes in Unbalanced Grid Conditions

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date

2023-04-25

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Department of Electrical Engineering and Automation

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Language

en

Pages

18

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IEEE Access, Volume 11, pp. 42204-42221

Abstract

Recently, the regulation of photovoltaic inverters, effectively under imbalanced voltages on the grid, has been crucial for the operation of grid-connected solar systems. In this regard, determining the output current reference is an integral aspect of managing a solar inverter with an unbalanced voltage. Based on evaluations of Instantaneous Active-reactive Control (IARC), Positive Negative Sequence Control (PNSC), Balanced Positive Sequence Control (BPSC), and Average Active-reactive Control (AARC), this paper proposes a novel variable-current-t-reference calculation method for minimizing power fluctuations and current harmonics. The controller is employed to regulate both constructive and destructive sequences inside a static framework, therefore enhancing dynamic performance and facilitating the selection of suitable controls in the presence of significant network defects. This study also suggests comparing the four MPPT methodologies examined (fuzzy logic, current only, Incremental Conductance, and Perturb & Observe) to maximize energy output. The simulation results efficiently validate the suggested computation approach that is presented in the current reference.

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Keywords

Reactive power, Voltage control, Inverters, Power harmonic filters, Harmonic analysis, Fluctuations, Oscillators

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DOI

10.1109/ACCESS.2023.3270262

Citation

Ibrahim, N F, Mahmoud, K, Lehtonen, M & Darwish, M M F 2023, ' Comparative Analysis of Three-Phase PV Grid Connected Inverter Current Control Schemes in Unbalanced Grid Conditions ', IEEE Access, vol. 11, 10107907, pp. 42204-42221 . https://doi.org/10.1109/ACCESS.2023.3270262

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https://urn.fi/URN:NBN:fi:aalto-202306304364

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[article-cris] Sähkötekniikan korkeakoulu / ELEC