Solution for Grid export Issue for Grid connected Photovoltaic Power Systems

Abstract

This concept is suitable at un-availability of net-metering systems for captive consumption grid connected solar power plants. It presents an overview of the state of the art of grid export issue for PV inverters at low and medium level solar power plants, mainly intended for rooftop applications. The paper focuses on-site problem and challenges to stop the grid-export issue at under-loaded conditions of self consumers of grid-tied solar power plants. The topology without bidirectional inverters has big advantages like low cost, volume and maintenance. In addition, it often reaches higher priority than topologies with bidirectional inverters. Therefore the new concepts are important for future developments.