A Simple Primary Key Algorithm Based Shade Dispersion Method for Maximizing PV Power Generation under Partial Shading Conditions*

doi:10.23919/CJEE.2024.000067

Chinese Journal of Electrical Engineering ›› 2024, Vol. 10 ›› Issue (2): 93-102.doi: 10.23919/CJEE.2024.000067

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A Simple Primary Key Algorithm Based Shade Dispersion Method for Maximizing PV Power Generation under Partial Shading Conditions^*

Prabhakaran Koothu Kesavan^1,*, A. Karthikeyan², Manoj Kumar², Sushant Mandal²

1. Renewable Energy Laboratory, Prince Sultan University, Riyadh 11586, Saudi Arabia;
2. Department of Electrical and Electronics Engineering,National Institute of Technology Karnataka, Mangalore 575025, India

Received:2023-10-10 Revised:2023-11-12 Accepted:2023-11-20 Online:2024-06-25 Published:2024-07-01
Contact: * E-mail: k7prabhakaran@gmail.com
About author:Prabhakaran Koothu Kesavan (Senior Member, IEEE) received the B.Eng. degree in Electrical and Electronics Engineering and the M.Eng. degree in Power Electronics and Drives from Anna University, Chennai, India, in 2011 and 2013, respectively, and the Ph.D. degree in Electrical and Electronics Engineering from the National Institute of Technology Karnataka, Surathkal, India, in 2019. He was a Postdoctoral Fellow with the Hydropower Simulation Laboratory, Department of Water Resource Development and Management, Indian Institute of Technology Roorkee, Roorkee, India, from September 2019 to December 2021. Later, he worked as a Senior Lead Engineer-Electrical System, Aerostrovilos Energy Pvt. Ltd. associated with Indian Institute of Technology Madras, India. Currently, he is working as a Postdoctoral Researcher with the Renewable Energy, Prince Sultan University, Saudi Arabia. His research interests include nonlinear control, control of power converters, industrial drives, power electronics applications in renewable energy systems and power conditioning.
A. Karthikeyan received the B.E. degree in Electrical and Electronics Engineering from Bharathidasan University, Tiruchirappalli, India, in 2002, and the M.S. (by research) and Ph.D. degrees in Electrical Engineering from the National Institute of Technology, Tiruchirappalli, in 2008 and 2013, respectively. He is currently working as an Associate Professor with the Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Surathkal, India. His research interests include design of power converter for drives, renewable energy systems and power conditioning.
Manoj Kumar received the B.Tech degree in Electrical and Electronics Engineering from National Institute of Technology Karnataka, Surathkal, India, in 2018. His research interests include design of power converter for drives, renewable energy systems.
Sushant Mandal received the B.Tech degree in Electrical and Electronics Engineering from National Institute of Technology Karnataka, Surathkal, India, in 2018. His research interests include design of power converter for drives, renewable energy systems.

Abstract

Abstract: The output power generation of a photovoltaic (PV) array reduces under partial shading, resulting in multiple local maxima in the PV characteristics and inaccurate tracking of the global maximum power point (GMPP). Various interconnection schemes are available to reduce power losses under partial shading. In this study, a primary key algorithm is proposed for distributing shading across an array. This method is suitable for any n×n PV array configuration and involves fewer calculations and variables, leading to reduced computational complexity. The power generations of a 9×9 PV array under four different shading conditions were compared with the configurations of: total cross-tied (TCT) and Su Du Ku, physical relocation and fixed column position of modules with fixed electrical connection (PRFCPM-FEC), and magic square (MS) and improved-odd-even-prime (IOEP). The advantage of the proposed method is that once the primary key elements are obtained, the remaining array elements are numbered in a simpler manner. The results obtained using the proposed arrangement show that the power is enhanced with reference to the TCT and is comparable to the Su Do Ku, PRFCPM-FEC, MS, and IOEP reconfigurations.

Key words: Photovoltaic (PV) array, partial shading, global maximum power point (GMPP), power loss, primary key

Prabhakaran Koothu Kesavan, A. Karthikeyan, Manoj Kumar, Sushant Mandal. A Simple Primary Key Algorithm Based Shade Dispersion Method for Maximizing PV Power Generation under Partial Shading Conditions^*[J]. Chinese Journal of Electrical Engineering, 2024, 10(2): 93-102.

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A Simple Primary Key Algorithm Based Shade Dispersion Method for Maximizing PV Power Generation under Partial Shading Conditions^*

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