A TCT-SC Hybridized Voltage Equalizer for Partial Shading Mitigation in PV Arrays
A TCT-SC Hybridized Voltage Equalizer for Partial Shading Mitigation in PV Arrays
复制标题
用于减轻光伏阵列中的部分阴影的 TCT-SC 混合电压均衡器
DOI：
10.1109/tste.2021.3088687
复制
发表时间：
2021
影响因子：
8.8
通讯作者：
Benedetto Nastasi
中科院分区：
文献类型：
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作者：
P. Satpathy;T. S. Babu;A. Mahmoud;Renu Sharma;Benedetto Nastasi
提出了一种新的基于全交叉连接结构和开关电容概念的电压均衡技术，以提高光伏阵列在局部阴影下的发电量。该技术使用电荷平衡的概念来保持整个交叉连接阵列模块之间的电压比，并在局部阴影期间确保更高的功率输出和凸起的功率曲线。在MatLab环境下对三种不同尺寸的光伏阵列在局部阴影下进行了验证，并与传统的光伏阵列重构技术和三种重构技术在发电量、损耗和转换效率等方面进行了比较。此外，还对所提出的系统所遇到的插入损耗进行了数学推导。研究结论是，该系统在遮阳过程中产生的电能往往比其他任何技术都要高，转换效率超过97%。
In this paper, a novel voltage equalization technique based on the hybridization of total cross-tied configuration and switching capacitor concept for enhancing the power generation of PV arrays during partial shading is proposed. The technique uses the charge balancing concept to maintain the voltage ratio between the total cross-tied array modules and ensures higher power output and convex power curves during partial shading. The validation of the proposed system is carried out in the MATLAB environment for three different size PV arrays under partial shading and compared with the conventional and three reconfiguration techniques in terms of power generation, losses, and conversion efficiency. Also, the insertion losses encountered by the proposed system are derived mathematically. The study concludes that the proposed system tends to generate higher power than any other techniques during shading with conversion efficiency of more than 97%.