Voltage Stability of Power Grids with PV Plants using Robust LPV-Control

:This paper proposes a new approach to control PV plants using linear parameter varying systems (LPVS) to overcome limitations of controllers designed based on single linearizations. The nonlinear PV plant is transformed into an LPVS and a feedback LPV controller is obtained, which is robust against bounded variations in the input matrix. Finally, the LPV controller is compared with a reference controller, and it is shown for an example that the proposed controller outperforms the reference controller by achieving voltage stability.