Unity power factor control of grid connected SPV system using instantaneous symmetrical component theory

In this paper, simulation studies for unity power factor control of grid connected 8 kW solar photovoltaic (SPV) system are presented. The characteristics of photovoltaic system are studied under various load and atmospheric conditions. The six pulses for PV inverter are generated using instantaneous symmetrical component theory (ISCT) control algorithm. DC bus voltage is maintained at 800V using PI controller. Instantaneous symmetrical component theory (ISCT) is used with indirect control technique for controlling inverter current. The required powers for linear and non-linear load are maintained thereby balancing the source currents. Simulations are performed with MATLAB Simulink version 15.