Control strategy of grid-connected pv inverters in microgrid with nonlinear operating conditions

This paper proposes a current control strategy for a Photovoltaic (PV) system in three-phase three-wire grid-connected microgrids under unbalanced and nonlinear load conditions. The proposed control strategy comprise of a multi-loop control technique to provide balanced output current, multi-resonan...

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Bibliographic Details
Main Authors: Naderipour, A., Abdul Malek, Z., Abohamzeh, E., Ramachandaramurthy, V. K., Miveh, M. R.
Format: Conference or Workshop Item
Language:English
Published: Institute of Electrical and Electronics Engineers Inc. 2019
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Online Access:http://eprints.utm.my/id/eprint/88988/1/AmirrezaNaderipour2019_ControlStrategyofGridConnectedPvInverters.pdf
http://eprints.utm.my/id/eprint/88988/
https://dx.doi.org/10.1109/PECON.2018.8684119
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Summary:This paper proposes a current control strategy for a Photovoltaic (PV) system in three-phase three-wire grid-connected microgrids under unbalanced and nonlinear load conditions. The proposed control strategy comprise of a multi-loop control technique to provide balanced output current, multi-resonant harmonic compensator to reduce the Total Harmonic Distortion (THD) and a droop-based control scheme to achieve accurate power sharing. Additionally, the current THDs were reduced from above 17.51% to lower than 3% with the proposed control strategy under nonlinear load conditions. The effectiveness of the proposed control strategy was proven via simulation using MATLAB/Simulink.