Design and Control of a Simplified NIBS PFC Converter Using Grasshopper-Optimized PI Controller for Battery Charging in Defence Applications
DOI:
https://doi.org/10.14429/dsj.20544Keywords:
Power Quality(PQ), Power Factor Correction (PFC), Battery Charger (BC), Non-Ideal Bridgeless Single Ended Primary Inductance Converter (NIBSEPIC), Grasshopper Optimization Algorithm(GOA), otal Harmonic Distortion(THD), State Space Averaging (SSA), Genetic Algorithm(GA), Particle Swarm Optimization (PSO)Abstract
This research focuses on the design and analysis of transformerless single-stage power architecture for charging Light Electric Vehicle (LEV) batteries, offering an alternative to conventional low or high-frequency transformer-based methods. Diode bridge rectifier (DBR) losses are the primary cause of lower efficiency in traditional Power Factor Correction (PFC) circuits used for battery charging. In this article, a single-phase AC to DC Non-Ideal Bridgeless SEPIC Converter (NIBS) has been designed and controlled for PFC and output regulation for battery charging in defence applications. Establishing a reliable and scalable EV charging infrastructure is pivotal to harnessing the full potential of LEVs in defence, improving operational efficiency, and enhancing energy security. A Hankel Matrix Method is employed to simplify the seventh-order model of the NIBS converter to third-order model. The efficacy of the NIBS converter-based charger is illustrated with the help of simulation-based performance under rated and over wide fluctuations in AC mains voltage, load and set point. It provides an efficiency of 91.99 %, input power factor of 0.9996, and THD of 2.34 % for rated load.
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