A robust intelligent nonlinear control for a VSC-based HVDC station

. This paper investigates a robust intelligent non-linear controller for a high-voltage direct current transmission (HVDC) station based on a voltage source converter (VSC). The proposed controller combines fuzzy logic (FL) and sliding mode (SM) techniques. The sliding mode technique is used to model parameter uncertainties, and fuzzy logic is employed to handle non-linearity. The simulation results show that the proposed controller is more efficient under various unfavourable operation conditions compared to other techniques.