Fractional-order Sliding Mode Control of Hybrid Drive Wind Turbine for Improving Low-voltage Ride-through Capacity

A hybrid drive wind turbine equipped with a speed regulating differential mechanism can generate electricity at the grid frequency by an electrically excited synchronous generator without requiring fully or partially rated converters. This has extensively been studied in recent years. To enhance transient operation performance and low-voltage ride-through capacity of proposed turbine, we aim to synthesize advanced control scheme for flexible regulation excitation based on fractional-order sliding mode theory. Moreover, extended state observer is constructed cooperate designed controller jointly compensate parametric uncertainties external disturbances. dedicated simulation model 1.5 MW established verified through experimental platform. The results show satisfactory maximum average errors 1.67% 1.05%, respectively. comparative case studies are carried out considering different conditions faults, which superiority improving system on-grid verified.