MPC Design and Comparative Analysis of Single-Phase 7-Level PUC and 9-Level CSC Inverters for Grid Integration of PV Panels

Raghda Hariri, Fadia Sebaaly, Kamal Al-Haddad and Hadi Y. Kanaan ()
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Raghda Hariri: Faculty of Engineering and Architecture—ESIB, Saint-Joseph University of Beirut, Dekwaneh, Beirut 1104 2020, Lebanon
Fadia Sebaaly: Hydro-Québec Research Institute (IREQ), Varennes, QC J3X 1S1, Canada
Kamal Al-Haddad: Ecole de Technologie Supérieure, Université du Québec, Montreal, QC H3C 1K3, Canada
Hadi Y. Kanaan: Faculty of Engineering and Architecture—ESIB, Saint-Joseph University of Beirut, Dekwaneh, Beirut 1104 2020, Lebanon

Energies, 2025, vol. 18, issue 19, 1-26

Abstract: In this study, a novel comparison between single phase 7-Level Packed U—Cell (PUC) inverter and single phase 9-Level Cross Switches Cell (CSC) inverter with Model Predictive Controller (MPC) for solar grid-tied applications is presented. Our innovation introduces a unique approach by integrating PV solar panels in PUC and CSC inverters in their two DC links rather than just one which increases power density of the system. Another key benefit for the proposed models lies in their simplified design, offering improved power quality and reduced complexity relative to traditional configurations. Moreover, both models feature streamlined control architectures that eliminate the need for additional controllers such as PI controllers for grid reference current extraction. Furthermore, the implementation of Maximum Power Point Tracking (MPPT) technology directly optimizes power output from the PV panels, negating the necessity for a DC-DC booster converter during integration. To validate the proposed concept’s performance for both inverters, extensive simulations were conducted using MATLAB/Simulink, assessing both inverters under steady-state conditions as well as various disturbances to evaluate its robustness and dynamic response. Both inverters exhibit robustness against variations in grid voltage, phase shift, and irradiation. By comparing both inverters, results demonstrate that the CSC inverter exhibits superior performance due to its booster feature which relies on generating voltage level greater than the DC input source. This primary advantage makes CSC a booster inverter.

Keywords: multilevel converters; PUC inverter; CSC inverter; MPC; MPPT; grid connected PV applications; booster inverter (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: 2025
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