Smart controller design for solar-grid hybrid system: Microcontroller based automatic adjustable discretized solar-grid integration system

The integration of small sized standalone solar systems to the grid is technically complicated resulting into expensive operation which is not affordable to all. As such, this paper presents a smart controller based design using digital signal processing for cost effective operation of solar-grid tied system. The hybrid system is able to size the connected system and deploy the operation strategy so as to get the effective utilization of solar output. The synchronization is not necessary as this method can be effectively altered by the use of load discretization. This gives cheap, efficient, reliable and cost effective operation. The system has been tested for the 120 Watt solar panel with the battery backup storage and its effectiveness is observed. The battery backup is made to operate during the cut off of Grid or Grid and Solar supply. The performance of the system over the wide range of operation and transient states are assured by practical observation and modification. This system is defined to fill the necessity of regions where solar power is used only as backup purposes to charge the battery and is actively dumped during the presence of active grid. These regions include many parts of the world where grid cut off is common due to the shortage of energy.