A Novel Enhanced High-Gain Quadruple-Diode Boost Regulator (QDBC) Setup for Solar Applications

Abstract

This paper examines and evaluates a newly modified high-gain DC-DC converter for electric vehicles and PV solar applications using the conventional quadratic boost structure as a basis. The proposed converter known as the quadrable-diode boost converter has a single switch, four diodes, smoothing inductors, and switch capacitors. The inductors and capacitors are used by this converter to store and release energy during each operational cycle, which increases the voltage generated at the output and lowers the ripple in the output currents and voltages. Comparing the proposed QDBC to other DC-DC converters (boost, SEPIC, quadratic boost converter) produced outstanding results. The primary factors of comparison were structure complexity, crest factor, standard ripple factor, and harmonic distortion level. These findings demonstrate that the QDBC performs like a first-order system and has higher input/output currents, voltages, and powers, faster settling times than existing DC-DC converters, and outstanding efficiency on par with the well-known boost converter. The authors of this paper also used various hysteresis current control approaches, such as controllable bandwidth hysteresis current controller in conjunction (CBHCR) with PI converters to investigate the stability and dynamic responsiveness of the proposed converter. The dynamic results produced using CBHCR yield a more efficient, less rippled converter with faster settling output voltage and power. Moreover, the frequency response analysis and harmonic spectrum analysis were conducted to examine the stability of the suggested converter concerning phase and gain margin. The linearized model of the recommended converter was simulated using Simplorer 7 and MATLAB/Simulink 2021a.