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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Ahmad, Mohd Faraz
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Control & Systems Engineering Electrical & Electronics Engineering

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Proposed high gain single DC-source SC-MLI topology for solar PV grid integration applications Mohammad, Khan; Arif, M. Saad; Md. Ayob, Shahrin; Alrajhi, Hasan; Alam, Mohd Sarfaraz; Ahmad, Mohd Faraz
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp344-354

Abstract

Multilevel inverters (MLIs) are a key solution for converting DC to AC power. In this article, an improved single-source SC-MLI topology is developed for solar PV applications. It consists of 12 unidirectional switches, 3 capacitors, and 3 diodes to provide sextuple voltage boosting with a lower cost function. Since the capacitor's voltage is self-balanced, there is no need for an additional circuit or sensors, bringing down the circuit's complexity. A simple and fundamental frequency-based control strategy, nearest-level pulse width modulation, is applied to assess the viability of the proposed topology. As a result, the proposed topology has an efficiency of over 97%, and it can generate 13 levels with a total harmonic distortion (THD) of 6.51%. Comparative analysis is performed to show the feasibility of the proposed topology which outperformed other 13-level similar topologies in terms of component count, cost factor, and boosting factor. The proposed topology's performance is evaluated under static and dynamic loads. Furthermore, the thermal analysis is performed using PLECS software to determine the efficiency of the circuit topology. Finally, the feasibility of the proposed circuit is verified for solar PV application.
Co-Authors Alam, Mohd Sarfaraz Alrajhi, Hasan Arif, M. Saad Md. Ayob, Shahrin Mohammad, Khan