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<p>The rapid expansion of solar photovoltaic (PV) capacity in India, driven by declining costs, supportive policies, and financial incentives, underscores the need for optimal PV system design to meet ambitious Net-Zero Emissions targets. As of October 2024, India’s installed solar capacity reached 92.12 GW, demonstrating a 30-fold increase over the past nine years and positioning solar PV as the most cost-effective option for new electricity generation. This study investigates the effect of varying the inverter loading ratio on the performance and economic viability of PV systems, focusing on a commercial 2 MWp solar site in Chandigarh, India. In this study, simulations were conducted using the NREL System Advisor Model (SAM) to evaluate energy production, clipping losses, and system efficiency across various DC-to-AC ratios. The results reveal that while increasing the DC to AC ratio initially boosts energy output, excessive ratios lead to diminished returns due to inverter clipping and inefficiencies. Optimal performance is achieved with a DC to AC ratio of approximately 1.85, balancing energy capture and minimizing losses. Additionally, seasonal variations in energy generation and clipping losses highlight the importance of aligning system design with local climatic conditions to enhance overall performance. This study also emphasizes the economic implications of inverter sizing, suggesting that optimizing the DC to AC ratio can significantly impact the levelized cost of energy (LCOE). These findings provide crucial insights for engineers, and policymakers aiming to optimize PV system design and improve economic returns in diverse geographic settings.</p>

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Enhanced energy yield in floating solar power plants through optimal inverter loading ratios

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Atul Avasthi,
  • Rachana Garg,
  • Priya Mahajan

摘要

The rapid expansion of solar photovoltaic (PV) capacity in India, driven by declining costs, supportive policies, and financial incentives, underscores the need for optimal PV system design to meet ambitious Net-Zero Emissions targets. As of October 2024, India’s installed solar capacity reached 92.12 GW, demonstrating a 30-fold increase over the past nine years and positioning solar PV as the most cost-effective option for new electricity generation. This study investigates the effect of varying the inverter loading ratio on the performance and economic viability of PV systems, focusing on a commercial 2 MWp solar site in Chandigarh, India. In this study, simulations were conducted using the NREL System Advisor Model (SAM) to evaluate energy production, clipping losses, and system efficiency across various DC-to-AC ratios. The results reveal that while increasing the DC to AC ratio initially boosts energy output, excessive ratios lead to diminished returns due to inverter clipping and inefficiencies. Optimal performance is achieved with a DC to AC ratio of approximately 1.85, balancing energy capture and minimizing losses. Additionally, seasonal variations in energy generation and clipping losses highlight the importance of aligning system design with local climatic conditions to enhance overall performance. This study also emphasizes the economic implications of inverter sizing, suggesting that optimizing the DC to AC ratio can significantly impact the levelized cost of energy (LCOE). These findings provide crucial insights for engineers, and policymakers aiming to optimize PV system design and improve economic returns in diverse geographic settings.