A Novel Non-Inverting Quadratic Double Switch Buck Boost Converter for Charging Lithium-ion Batteries in Electrical Vehicles

Abstract

As the demand for clean energy sources increases on a large global scale, electric vehicles (EVs) are currently witnessing a huge demand to replace gas-powered vehicles. A crucial part in EVs is the battery management system, which utilizes DC-DC converters as essential parts. For this purpose, non-inverting DC-DC converters are the most desirable type. Moreover, these converters need to operate in continuous conduction mode (CCM) to minimize harmonic distortion and keep the load always fed with current. In this paper, we propose a novel design of a DC/DC quadratic non-inverting buck boost converter that has two switches and combines three different converters. A simulation model was constructed to investigate the converter performance for duty cycles from 30% to 80% in the CCM. The simulation results obtained not only revealed good performance in the desired duty cycle range but also confirmed the operation in CCM.