A processor in the loop implementation for a grid connected photovoltaic system considering power quality issues

Processor in the Loop (PIL) is a technique for the validation and verification of control algorithms on a real DSP board. This paper presents a PIL control implementation of a fully grid connected photovoltaic system for power quality improvement under nonlinear load variations. Moreover, the proposed control technique is based on predictive direct power control (PDPC) method. It reduces harmonics and provides reactive power compensation due to loads non-linearity and sudden variations. The source currents therefore recover a sinusoidal waveform with a unity power factor. Furthermore, the power transferred from the PV system into the utility grid is also increased. PIL co-simulation results prove the efficiency of the proposed implementation of the control algorithm.