Three-Phase Grid-Connected Inverter Power Control under Unbalanced Grid Conditions Using a Proportional-Resonant Control Method

Mohammad Alathamneh (), Haneen Ghanayem, Xingyu Yang and R. M. Nelms
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Mohammad Alathamneh: Electrical and Computer Engineering Department, Auburn University, Auburn, AL 36849, USA
Haneen Ghanayem: Electrical and Computer Engineering Department, Auburn University, Auburn, AL 36849, USA
Xingyu Yang: Electrical and Computer Engineering Department, Auburn University, Auburn, AL 36849, USA
R. M. Nelms: Electrical and Computer Engineering Department, Auburn University, Auburn, AL 36849, USA

Energies, 2022, vol. 15, issue 19, 1-17

Abstract: Proposed in this article is bidirectional real and reactive power control of a three-phase grid-connected inverter under unbalanced grid conditions using a proportional-resonance controller. Different unbalanced grid conditions have been studied, such as unbalanced three-phase load and unbalanced grid impedance. These unbalanced scenarios generate unbalanced grid currents and unbalanced point-of-common-coupling (PCC) voltages, causing large oscillations in both real and reactive power transferred to the grid. The purposes of the suggested technique are to balance the grid currents and point-of-common-coupling voltages as well as control the power injected into the grid. As a result, balanced PCC voltages are guaranteed, the oscillation in real and reactive power is reduced, and power control is achieved. The proposed method’s performance has been verified in MATLAB/SIMULINK simulation software, and different experimental results have been obtained using a real-time interface platform, dSPACE DS1202.

Keywords: bidirectional power flow; DC-AC power converters; proportional-resonant controller; PR controller; power control; power conversion; Voltage-source converters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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