Enhanced performance of intelligent hybrid Takagi Sugeno-Integral Backstepping controller for grid-tied PV systems: processor-in-the-loop validation

This paper presents an intelligent hybrid Takagi-Sugeno Integral Backstepping Control (TS-IBSC) technique to enhance the performance of grid-tied photovoltaic systems (GTPVS) under rapidly changing environmental conditions. The suggested technique combines TS fuzzy logic with the nonlinear IBSC, which is confirmed through Processor-In-the-Loop (PIL) implementation using the eZdsp F28335 board. This hybrid method is assessed under multiple scenarios, including abrupt climatic changes, real-world irradiance variations, a grid fault, and three-phase load changes. Results corroborate the superior MPPT efficiency of 98.85 %, rapid settling time of 17 ms, and reduced Harmonic Distortion (THD) of 0.59 % under standard conditions. TS-IBSC establishes rapid convergence, enhanced power quality, and overall system stability, outperforming conventional methods. The findings prove its feasibility for real-time practical applications, offering a robust and reliable solution for GTPVS.