Active and reactive power control during unbalanced grid voltage in PV systems
Peña, Rubén
- 1Universidad de Concepcion
- 2
- 3Universidad del Bio Bio
- 4Universitat Politècnica de València
Journal
IECON Proceedings (Industrial Electronics Conference)
ISSN
1553-572X
Open Access
closed
Start page
3012
End page
3017
This paper presents a control strategy for a grid connected photovoltaic (PV) system aiming to regulate the active and reactive power injected to the electric system during asymmetrical voltage faults. The active power reference is obtained from a Maximum Power Point Tracking (MPPT) algorithm. The proposed control strategy generates the required reference currents to be imposed by the grid-tied inverter from the desired active and reactive power and the measured supply voltage. The scheme is validated for a single stage PV system where the inverter currents are regulated via predictive control. Results showing the performance of the strategy are presented during unbalanced voltage sags and swells.