Low Computational Burden Predictive Direct Power Control of Quasi Z-Source Inverter for Grid-Tied PV Applications

Abderahmane Abid (), Abualkasim Bakeer (), Laid Zellouma, Mansour Bouzidi, Abderezak Lashab and Boualaga Rabhi
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Abderahmane Abid: LEVRES Laboratory, Department of Electrical Engineering, El-Oued University, El-Oued 3900, Algeria
Abualkasim Bakeer: Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan 81542, Egypt
Laid Zellouma: LEVRES Laboratory, Department of Electrical Engineering, El-Oued University, El-Oued 3900, Algeria
Mansour Bouzidi: Department of Electronics and Communications, Ouargla University, Ouargla 30000, Algeria
Abderezak Lashab: Center for Research on Microgrids (CROM), Aalborg University, 9220 Aalborg, Denmark
Boualaga Rabhi: Department of Electrical Engineering, Biskra University, Biskra 7000, Algeria

Sustainability, 2023, vol. 15, issue 5, 1-20

Abstract: This paper proposes a simplified predictive direct power control for the grid-tied quasi Z-source inverter. The proposed control implements a model predictive control structure to achieve the maximum obtainable power from the collected PV source. The power delivered to the grid is managed to compensate for the reactive power and, as needed, to ensure the grid’s stability. A predictive power model for a quasi Z-source inverter is developed in which the proposed control can operate with a fixed switching frequency without a weighting factor. The simplified space vector modulation uses the three appropriate switching vectors that are selected and applied using precalculated switching times during each switching period, in which the required switching vectors are determined only from one sector in the space vector diagram, taking all of the information of the other sectors, which leads to reducing the computational burden. Simulation results and comparative study are used to confirm the proposed control performance for the grid-tied quasi Z-source inverter capable of tracking and generating the maximum power from PV with fast-tracking dynamics, ensuring the ac voltage desired, and better tracking of the active and reactive power reference with the lowest power ripple. The grid current harmonics were tested and conformed to the IEEE-519 standard. Additionally, the proposed simplified PDPC is experimentally validated using the Hardware-in-the-Loop emulator and the C2000TM-microcontroller-LaunchPadXL TMS320F28379D kit, establishing the usability and good result of our proposed control approach in terms of requirements.

Keywords: distributed generation; model predictive control; photovoltaic source; space vector modulation; switching frequency; switching times; hardware-in-the-loop (HIL) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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