Novel Adaptive Energy Management Technique for Multiport Fast EV Chargers

This article proposes an innovative adaptive energy management (AEM) technique tailored for multimodule, multiport fast electric vehicle chargers (FEVCs). The proposed approach aims to solve power sharing problem for multimodule fast EV chargers on both module level and charger level. In addition, this technique is designed to oversee and control the power electronic modules (PEMs), compute the optimal number of contributing modules, select the most suitable modules for contribution, and compute power-sharing ratio for each module. Furthermore, the proposed AEM facilitates power sharing among various ports through the introduction of PEM borrowing, a novel concept presented for the first time in this article. The proposed borrowing technique is further applied to split dual-port FEVCs. The efficacy of the proposed concepts is validated through simulation and experimental investigations, presented as case studies to demonstrate the high-quality and distinctive advantages of the solution. The experimental and simulation results show the ability of the proposed method to manage the process of energy borrowing between different ports and different charging units, increasing the charging power range and solving the anxiety of charging speed.