Enhancing Grid Stability Using a Fuzzy Logic Controlled 800 kW PV-STATCOM System
DOI:
https://doi.org/10.22399/ijcesen.5324Keywords:
PV STATCOM , FUZZY Logic Control , PI Controller, Photovoltaic System , NPC InverterAbstract
This paper presents a simulation study of a combined photovoltaic–STATCOM (PV‑STATCOM) system connected to a 25 kV medium‑voltage grid. The system consists of an 800 kW photovoltaic power plant interfaced with the grid through a three‑phase neutral‑point‑clamped (NPC) inverter. The inverter performs a dual function: injecting active power generated by the PV array and compensating reactive power to support grid voltage. Two control strategies are implemented and compared: a conventional proportional–integral (PI) controller and a fuzzy logic controller (FLC). Their performance is evaluated in terms of DC‑bus voltage regulation, reactive power compensation, and dynamic response under varying irradiation and load conditions. Simulation results show that the PV‑STATCOM concept improves power quality and grid stability. In addition, the fuzzy logic controller provides faster dynamic response and better robustness compared with the conventional PI controller.
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