SOGI-SF Filter based Three Phase Grid Tied Solar Energy Conversion System

Under unusual grid conditions, in order to improve the power quality of the system, a three-phase micro-grid based on a Second Order Generalized Integrator-Sequence Filter (SOGI-SF) is developed in this work. The solar PV generating system basically meets the energy requirements at the distribution end. When energy is being transferred from the source to the load, there are many problems encountered during the process. The main objective is to maintain a high power factor at the grid. This can be achieved by providing the reactive power needed by the load. The non-linear demand is primarily responsible for introducing harmonics into the system. For resolving power quality problems brought on by nonlinear loads, the SOGI-SF control that is being demonstrated is very effective. The performance of the system is evaluated under dynamic irradiance. The THD of the grid current is maintained as per the IEEE 519-2018 standard.