Robust adaptive DC-voltage regulator design for ultra-lift Luo converter using PD interval type-2 TSK fuzzy controller

Abstract This paper presents a novel non-isolated step-up converter topology that incorporates the ultra-lift technique to overcome the limitations of conventional boost converters. The proposed topology utilizes one switch, two inductors, two capacitors, and three diodes to achieve a high voltage gain while effectively reducing current ripple and minimizing component stress. The design maintains structural simplicity and cost-effectiveness, making it suitable for high-performance power conversion applications. The objective of this study is to design a robust adaptive dc-voltage regulator for the ultra-lift luo converter using proportional + derivative type interval type-2 Takagi-Sugeno-Kang fuzzy controller. The dynamic output voltage regulation performance of the designed robust adaptive dc-voltage regulator, which employs proportional + derivative type interval type-2 Takagi-Sugeno-Kang fuzzy controller, is assessed in the light of uncertain dynamics stemming from perturbations in step dc-input voltages and load, comparing it to proportional + derivative type-1 Takagi-Sugeno-Kang fuzzy controller in terms of rise time, settling time, recovery time, overshoot and/or undershoot, steady-state error and integral time absolute error using MATLAB/Fuzzy logic toolbox.The results from comprehensive simulations clearly indicated that the designed dc-voltage regulator did not only demonstrate significant improvements but also offered more robust dynamic responses compared to its type-1 counterpart.