Improved Sliding Mode Control for Tracking Global Maximum Power of Triple Series Parallel Ladder Photovoltaic Array under Uneven Shadowing

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-07-10 DOI:10.1093/ce/zkae054

RamaKoteswaraRao Alla, Kandipati Rajani, Ravindranath Tagore Yadlapalli

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Abstract

This paper presents an innovative way for enhancing the performance of photovoltaic arrays under uneven shadowing conditions. The study focuses on a triple series parallel ladder configuration to exploit the benefits of increased power generation while addressing the challenges associated with uneven shadowing. The proposed methodology focuses on the implementation of improved sliding mode Control technique for the global maximum power point tracking efficiently. Sliding mode control is known for its robustness in the presence of uncertainties and disturbances, making it suitable for dynamic and complex systems such as photovoltaic arrays. This work employs a comprehensive simulation framework to comment the performance of the suggested improved sliding mode control strategy at uneven shadowing scenarios. Comparative analysis has been done to show the effectiveness of the suggested method than the traditional control strategies. The results demonstrate a remarkable enhancement in the tracking accuracy of the global maximum power point, leading to enhanced energy harvesting capabilities under challenging environmental conditions. Furthermore, the proposed approach exhibits robustness and adaptability in mitigating the effect of shading on the photovoltaic array, thereby increasing overall system efficiency. This research contributes valuable insights into the development of advanced control strategies for photovoltaic arrays, particularly in the context of triple series parallel ladder configurations operating under uneven shadowing conditions. Under short narrow shading condition, the improved sliding mode control method tracking the maximum power more compared to perturb & observe is 20.68%, incremental conductance is 68.78%, fuzzy incremental conductance is 19.8%, and constant velocity sliding mode control is 1.25%. The improved sliding mode control method has 60% less chattering than constant velocity sliding mode control under shading conditions.

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改进的滑动模式控制，用于在不均匀阴影下跟踪三串并联梯形光伏阵列的全局最大功率

本文提出了一种在不均匀阴影条件下提高光伏阵列性能的创新方法。研究的重点是三串并联梯形配置，以利用增加发电量的优势，同时解决与不均匀阴影相关的挑战。所提出的方法侧重于实施改进的滑动模式控制技术，以有效实现全局最大功率点跟踪。滑动模式控制以其在不确定性和干扰情况下的鲁棒性而著称，因此适用于光伏阵列等动态复杂系统。本研究采用了一个综合仿真框架，对所建议的改进型滑动模式控制策略在不均匀阴影场景下的性能进行了评测。对比分析表明了建议方法比传统控制策略更有效。结果表明，全局最大功率点的跟踪精度显著提高，从而增强了在具有挑战性的环境条件下的能量收集能力。此外，所建议的方法在减轻遮阳对光伏阵列的影响方面表现出稳健性和适应性，从而提高了系统的整体效率。这项研究为光伏阵列先进控制策略的开发提供了宝贵的见解，尤其是在不均匀遮光条件下运行的三串并联阶梯配置方面。在短窄遮挡条件下，改进的滑动模式控制方法与扰动和观察法相比，最大功率跟踪率提高了 20.68%，增量电导率提高了 68.78%，模糊增量电导率提高了 19.8%，恒速滑动模式控制提高了 1.25%。在遮光条件下，改进的滑模控制方法比恒速滑模控制减少了 60% 的颤振。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.