Mitigation of power mismatch losses and wiring line losses of partially shaded solar PV array using improvised magic technique

Abstract

This study presents the new interconnection scheme for solar photovoltaic (PV) modules to mitigate the power mismatch and wiring line losses employing improvised magic technique (IMT). The proposed interconnection scheme provides improved power enhancement compared to conventional total cross tied (TCT) technique. This technique can be implemented on PV array of any order with 'x' rows (x > 2) and 'y' columns (y > 2). However, in the higher order PV modules, power mismatch loss and wiring loss reduced significantly using segmented improvised magic technique (SIMT). The sequence of reconfiguring the PV modules has been explained using a flowchart and an algorithm both for IMT and SIMT. The effectiveness of these techniques is tested using MATLAB simulations and validated the analysis by comparing the performances with the existing TCT for lower order (3 × 3) with experimentation and higher order (9 × 9) PV modules. Thus, the proposed IMT and SIMT techniques provide the maximum power enhancement, less power mismatch and line loss, and maximum improved efficiency in real-time PV array installations.

A novel scan pattern for reconfiguration of partially shaded photovoltaic arrays for maximum power extraction

“…From simulated results, it is noted that the CB and DS configurations yield the GMP of 10,416 and 10,533 W, respectively. From the Equations ( 28)- (32), it is evidently noted that MM P,DS < MM P,CB < MM P,OEP < MM P,OE < MM P,TCT . Thus, by employing the DS-based configuration of PV panels, the mismatch power is highly mitigated thereby maximizing the output power irrespective of incident solar irradiation.…”

“…• As opposed to many existing static reconfiguration approaches, [14][15][16][17][18][19][20][21][22][23][24][25][26][28][29][30][31][32][33] and uniform shading conditions. • The effectiveness of the proposed configuration is compared with the conventional SP, TCT, and recently proposed Chaotic Baker Map, 26 Odd-Even, 34 and Odd-Even-Prime 35 configurations.…”

Optimal Hybrid PV Array Topologies to Maximize the Power Output by Reducing the Effect of Non-Uniform Operating Conditions

“…Thus, the length of the cabling is more than the T-C-T and Sudoku arrangements [40]. Futoshiki Sudoku, optimal Sudoku, unsymmetrical puzzle, zig-zag, dominant square logic, and improved magic square techniques have been proposed to improve the performance of T-C-T topology [41][42][43][44][45][46][47]. The shade dispersion static reconfigured techniques do not require any sensors, reconfiguration algorithm, and switching matrix.…”

Enhanced performance metrics under shading conditions through experimental investigations

“…The same issues arise with methods such as [24, 25]. Physical relocation‐based algorithms, such as Su Do Ku [26, 27], improvised magic techniques [28], chaotic baker maps [29] or newly published sky scrapper [16] do not have these sorts of drawbacks.…”

“…These methods disperse the shade on to the different rows and columns thereby undeviating row currents are achieved. The advantage of this method is that it does not require any extra equipment such as electrical and electronic equipment [15]. A clear differentiation between the local peaks and global peaks is achieved through this method at a minimum cost [16].…”