Enhanced low voltage ride-through control of multilevel flying capacitor inverter based wind generation

Younes El Khlifi (ENSET Hassan II University of Casablanca)
Abdelmounime El Magri (ENSET Hassan II University of Casablanca)
Adil Mansouri (ENSET Hassan II University of Casablanca)
Rachid Lajouad (ENSET Hassan II University of Casablanca)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 33, No 2: February 2024

This paper introduces a cost-effective control method to enhance the low voltage ride-through (LVRT) capability and smooth the output power of a three-phase multilevel flying capacitor inverter (FCI) in wind turbine-based permanent magnet synchronous generator (PMSG). The proposed approach utilizes the energy storage capability of flying capacitors to mitigate wind power fluctuations and address short-duration outages and deep voltage sags. Additionally, a nonlinear controller based Lyapunov theory is developed to regulate capacitor voltages, improve power factors, and balance DC-link voltage. Numerical simulations are conducted in MATLAB/SimPower systems environment to validate the effectiveness of this comprehensive control strategy across different grid operation scenarios.