Supplementary Files
Keywords
mismatch losses
cloud shading effects
solar module interconnection
MATLAB
Abstract
The effective reduction of mismatch losses in photovoltaic (PV) arrays is crucial for maximizing power generation. This study introduces a novel interconnection design called “Parallel Connected Photovoltaic Total Cross Tied” (P-TCT) to address this challenge. P-TCT optimizes a PV array by splitting PV modules into parallel TCT subgroups with even number of rows and optimal parallel branching. In this investigation, twenty-four PV modules in a 4 × 6 configuration with three parallelly connected TCT subgroups were arranged. MATLAB Simulink was employed for comprehensive modelling and simulations to compare the power generation performance of PV arrays employing Series Parallel (SP), Total Cross Tied (TCT) and P?TCT interconnection. Under ideal and shadeless condition, the twenty?four?module PV arrays generated a maximum power (Pmp) of 3,594 W. Simulations under various random partial cloud shading scenarios revealed the P?TCT array outperformed SP and TCT. In the first random partial cloud shading scenario, the P-TCT PV array produced 2,145 W, marking a significant 36.8% and 27.1% improvement over SP and TCT PV arrays, respectively. In the second random partial cloud shading scenario, P?TCT excelled, yielding 2,197 W, a remarkable 69.9% and 58.8% increase over SP and TCT PV arrays. In summary, this research demonstrates that the P?TCT interconnection is the optimal design among the three methods, significantly improving power generation and reducing mismatch losses in PV arrays.
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