Field Testing of Adaptive Power Control for Seamless Integration of Module-level Battery with Leading Inverters

Energy storage coupled behind solar modules on the rooftop can solve some major barriers faced by centralized energy storage architecture. These barriers include finding suitable real-estate, safety and regulatory considerations, long permitting process and inability to scale up easily. Yotta's SolarLEAF™ PV-coupled storage has a built-in three-port DC power control core that is designed to allow its use with leading inverter topologies that combines the advantages of DC-coupled storage with the scalability and simplicity of AC coupled storage. The intent of these tests were to evaluate the system level controls and performance in low voltage architectures such as micro-inverters with lab and field trials. The operating modes on the three-port power conversion within the module level energy storage was selected to optimize its working with the specific system. The performance metrics, design and integration process in each system will be discussed as this is central to unlocking the various advantages (technical and economic) of PV-coupled energy storage.