High-gain DC-DC converter with triple-winding coupled inductor for enhanced power quality in renewable energy applications

This paper introduces a groundbreaking high-gain dc-dc converter using a Triple-winding Coupled Inductor (TCI) combined with a voltage multiplier cell, eliminating the need for a large duty cycle and achieving significant voltage gain. The proposed converter ensures input current continuity and a common ground, making it suitable for renewable energy applications. It features low voltage stress on the switch and high efficiency, further enhanced by a passive clamp circuit that recycles energy from the leakage inductance, reducing voltage spikes. Additionally, this study pioneers a TCI Power Factor Enhancement Converter integrated with an advanced Proportional Integral Derivative System. This system aims for precise regulation, increased stability, and superior Power Quality (PQ) at the input interface, offering unmatched dynamic responsiveness with rapid rise time and minimal overshoot, effectively addressing traditional AC-DC converter challenges. The proposed converter is modeled and benchmarked against conventional alternatives using MATLAB/Simulink. A comprehensive analysis of a 1.2 kW converter under closed-loop control across various source voltages and load conditions demonstrates its robustness, maintaining steady operation despite abrupt load or voltage changes. Experimental validation with 1.2 kW hardware prototypes confirms exceptional transient performance and PQ metrics, achieving near-unity power factor and low Total Harmonic Distortion of 1.17% and 1.15%. Efficiency ratings of 96.2% and 96.7% emphasize its effectiveness. This research advances power conversion technology and provides a crucial reference for developing resilient controllers, ensuring precise regulation and high power quality in diverse applications.