Ultra-Functional Novel Circuit for Electric Vehicle Charging Solutions Based on a Floating Active Filter Connected to the High-Frequency Link

Abstract

This paper will discuss an ultra-functional circuit that can work in a variety of applications, including electric vehicle charging. Inside this application, it can be used in different modalities, such as on-board chargers, off-board wallbox chargers or wireless chargers. The main function of the circuit is to filter the power ripple at twice the grid frequency by means of a decoupling circuit connected in series with a resonant modified dual active bridge converter. However, it can also perform other functions such as peak shaving or low-voltage battery charging. The experimental results corroborate that the proposed active filter circuit with the connection in the high-frequency link opens new opportunities for single-stage integrated topologies.