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<p>Multilevel inverters (MLI) are becoming prevalent in industrial applications and for integrating renewable energy supplies. The photovoltaic (PV) energy is the primary renewable energy source (RES) for power generation. In low-amperage systems or unshaded environments, series PV systems can be a cost-effective way to raise voltage levels while keeping the current constant. Switched-capacitor (SC) based MLIs are being investigated for PV integration due to their low component count and cost. This paper introduces and investigates a new multilevel switched capacitor inverter (MLSCI) with a reduced number of components for the series PV system. The primary objective of this inverter is to generate more voltage levels while maintaining the least amperage. Also, the proposed MLSCI can be used in 2 configurations: symmetric and asymmetric. In this work, asymmetric MLI is designed and validated with several PV panel parameters. Further, the proposed MLSCI is simulated using MATLAB-Simulink, and its performance is validated under several operational scenarios involving load changes.</p>

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Design and Modelling of Novel Asymmetric Multilevel Switched-Capacitor Inverter for PV Systems

  • 期刊论文

  • 发表日期：

    2025年11月26日

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  • Anulin Asha,
  • Kakula Khumukchamba,
  • S Sreejith,
  • Vivekanandan Subburaj,
  • Saahithi Suresh

摘要

Multilevel inverters (MLI) are becoming prevalent in industrial applications and for integrating renewable energy supplies. The photovoltaic (PV) energy is the primary renewable energy source (RES) for power generation. In low-amperage systems or unshaded environments, series PV systems can be a cost-effective way to raise voltage levels while keeping the current constant. Switched-capacitor (SC) based MLIs are being investigated for PV integration due to their low component count and cost. This paper introduces and investigates a new multilevel switched capacitor inverter (MLSCI) with a reduced number of components for the series PV system. The primary objective of this inverter is to generate more voltage levels while maintaining the least amperage. Also, the proposed MLSCI can be used in 2 configurations: symmetric and asymmetric. In this work, asymmetric MLI is designed and validated with several PV panel parameters. Further, the proposed MLSCI is simulated using MATLAB-Simulink, and its performance is validated under several operational scenarios involving load changes.