Electric Vehicle Charger with Interleaved Converter

Abstract

The increasing adoption of electric vehicles (EVs) has been demanding advanced charging solutions that prioritize efficiency, reliability, and scalability. The EV chargers is based on two stage power converter which include rectifier (AC – DC conversion) followed by DC-DC converter. EV chargers deploy buck, boost or buck converters. Conventional boost converters, while widely used, face limitations in high-power EV charging due to higher current ripple and efficiency degradation. This paper presents an interleaved boost converter (IBC) topology for EV charging applications, with phase-shifted parallel operation to mitigate high current ripples and improve efficiency. By distributing current across multiple phases, the IBC significantly reduces input current ripple, minimizes inductor losses and enhances thermal management. Results demonstrate a peak efficiency of 96%, as well as reduction in current ripple compared to conventional designs. Furthermore, the IBC’s modular structure supports scalability for higher power demands and seamless integration with renewable energy systems. These attributes underscore the converter’s suitability for fast-charging infrastructure, offering reduced electromagnetic interference, extended component lifespan and robust grid compatibility.