PQ Control of PV Systems for Grid Integration

In this context, we can elaborate with additional details to enhance understanding of this concept. "PQ control" refers to a technical approach for managing power injection from solar photovoltaic panels into the electrical grid. This control strategy ensures stable active power (P) and reactive power (Q) output while enabling surplus electricity to be fed back to the grid for distribution to other consumers. The implementation typically involves phase-locked loops (PLL) for grid synchronization, Park transformations for abc-dq coordinate conversion, and PI controllers for precise power regulation. Through this methodology, we facilitate the integration of renewable energy sources while reducing dependence on non-renewable resources. Consequently, PQ control technology plays a vital role in the energy sector and has gained widespread adoption in grid-tied inverter systems, with common implementations using dq-frame current control algorithms that maintain power quality standards like IEEE 1547.