Power Generation Improvement in Partially Shaded Series-Parallel PV Arrays through Junction Wires

In this paper, the effect of partial shading in the most hitherto known and widely applied PV array configuration has been studied. Also, an approach of adding additional wires to the junctions of series-parallel modules for losses reduction due to shading is proposed and validated using various shading scenarios. The additional wires in the module junctions allow the flowing of higher current through additional paths avoiding the bypass diodes activation. The complete study is conducted in the simulation for a 6x5 array and both the connection type i.e. simple series-parallel and series-parallel with junction wires are tested under six partial shading scenarios using power generation, mismatch and power losses, efficiency and power-voltage characteristics curves. From the conducted study, it has been found that the array with junction wires is capable of improving the PV array generation capacity under shading and can be applied to arbitrary sized arrays with very less complexity and cost.

[1]  Sudhakar Babu Thanikanti,et al.  Power losses mitigation through electrical reconfiguration in partial shading prone solar PV arrays , 2022, Optik.

[2]  Hassan Haes Alhelou,et al.  Performance and Reliability Improvement of Partially Shaded PV Arrays by One-time Electrical Reconfiguration , 2022, IEEE Access.

[3]  P. Satpathy,et al.  Bypass Diodes Configurations for Mismatch Losses Mitigation in Solar PV Modules , 2021, Lecture Notes in Electrical Engineering.

[4]  Priya Ranjan Satpathy,et al.  A TCT-SC Hybridized Voltage Equalizer for Partial Shading Mitigation in PV Arrays , 2021, IEEE Transactions on Sustainable Energy.

[5]  P. Satpathy,et al.  Optimal Design and Performance Survey of a 100kWP Grid-Connected PV Plant for Installation near the Top Ranked Green City of India , 2021, 2021 1st Odisha International Conference on Electrical Power Engineering, Communication and Computing Technology(ODICON).

[6]  Priya Ranjan Satpathy,et al.  Impact of Uneven Shading by Neighboring Buildings and Clouds on the Conventional and Hybrid Configurations of Roof-top PV Arrays , 2021, IEEE Access.

[7]  Santhan Kumar Cherukuri,et al.  Power Enhancement in Partial Shaded Photovoltaic System Using Spiral Pattern Array Configuration Scheme , 2021, IEEE Access.

[8]  Z. Salam,et al.  Recent developments of MPPT techniques for PV systems under partial shading conditions: a critical review and performance evaluation , 2020, IET Renewable Power Generation.

[9]  Renu Sharma,et al.  Reliability and losses investigation of photovoltaic power generators during partial shading , 2020 .

[10]  Renu Sharma,et al.  Parametric indicators for partial shading and fault prediction in photovoltaic arrays with various interconnection topologies , 2020 .

[11]  Yan Wang,et al.  Hotspot development and shading response of shingled PV modules , 2020 .

[12]  Renu Sharma,et al.  Bypass Diodes Configurations for Mismatch and Hotspot Reduction in PV Modules , 2020, 2020 International Conference on Computational Intelligence for Smart Power System and Sustainable Energy (CISPSSE).

[13]  Priya Ranjan Satpathy,et al.  Power and mismatch losses mitigation by a fixed electrical reconfiguration technique for partially shaded photovoltaic arrays , 2019, Energy Conversion and Management.

[14]  Priya Ranjan Satpathy,et al.  An efficient SD-PAR technique for maximum power generation from modules of partially shaded PV arrays , 2019, Energy.

[15]  Suresh Mikkili,et al.  Modeling, simulation and performance analysis of solar PV array configurations (Series, Series–Parallel and Honey-Comb) to extract maximum power under Partial Shading Conditions , 2018, Energy Reports.

[16]  Renu Sharma,et al.  Power loss reduction in partially shaded PV arrays by a static SDP technique , 2018, Energy.

[17]  P. Satpathy,et al.  Influence of parametric variation in extraction of MPP from solar PV modules , 2018, 2018 Technologies for Smart-City Energy Security and Power (ICSESP).

[18]  Bibekananda Jena,et al.  Topology alteration for output power maximization in PV arrays under partial shading , 2018, 2018 Technologies for Smart-City Energy Security and Power (ICSESP).

[19]  Renu Sharma,et al.  Power enhancement from partially shaded modules of solar PV arrays through various interconnections among modules , 2018 .

[20]  Okan Bingöl,et al.  Analysis and comparison of different PV array configurations under partial shading conditions , 2018 .

[21]  Frede Blaabjerg,et al.  Particle Swarm Optimization Based Solar PV Array Reconfiguration of the Maximum Power Extraction Under Partial Shading Conditions , 2018, IEEE Transactions on Sustainable Energy.

[22]  Renu Sharma,et al.  A shade dispersion interconnection scheme for partially shaded modules in a solar PV array network , 2017 .

[23]  Kari Lappalainen,et al.  Output power variation of different PV array configurations during irradiance transitions caused by moving clouds , 2017 .

[24]  Bidyadhar Subudhi,et al.  A New MPPT Design Using Grey Wolf Optimization Technique for Photovoltaic System Under Partial Shading Conditions , 2016, IEEE Transactions on Sustainable Energy.

[25]  N. Rajasekar,et al.  Solar PV array reconfiguration under partial shading conditions for maximum power extraction using genetic algorithm , 2015 .

[26]  Seppo Valkealahti,et al.  Effect of Photovoltaic Generator Components on the Number of MPPs Under Partial Shading Conditions , 2013, IEEE Transactions on Energy Conversion.

[27]  S. Valkealahti,et al.  Power Losses in Long String and Parallel-Connected Short Strings of Series-Connected Silicon-Based Photovoltaic Modules Due to Partial Shading Conditions , 2012, IEEE Transactions on Energy Conversion.

[28]  Yaw-Juen Wang,et al.  An investigation on partial shading of PV modules with different connection configurations of PV cel , 2011 .

[29]  B. Mathur,et al.  Effect of Shading on Series and Parallel Connected Solar PV Modules , 2009 .

[30]  J. L. Balenzategui,et al.  Estimation of photovoltaic module yearly temperature and performance based on Nominal Operation Cell Temperature calculations , 2004 .

[31]  K. Bücher.  Site dependence of the energy collection of PV modules , 1997 .

[32]  Kholid Akhmad,et al.  Outdoor performance of amorphous silicon and polycrystalline silicon PV modules , 1997 .