Nazir, A.; Khan, S. A.; Khan, M. A.; Alam, Z.; Khan, I.; Irfan, M.; Rehman, S.; Nowakowski, G. Robust Estimation Based Nonlinear Higher Order Sliding Mode Control Strategies for PMSG-WECS. Bull. Pol. Acad. Sci. Tech. Sci. 2023, 71, e147063.