Grid-tied Modular and Scalable Photovoltaic Distributed Maximum Power Point Tracking System with Storage at Module Level Using Non-Isolated Three-Port Converters

In this manuscript a new modular PV and storage system for grid-tied applications is presented. Each module comprises a PV panel, a small battery pack and a power converter. The system is able to perform distributed MPPT at panel level with enlarged operating conditions thanks to the added storage. Different strategies to enlarge the MPPT capability are presented along with simulations that show their effectiveness.