Permanent magnet synchronous generators (PMSG) have become the mainstream choice for offshore wind power generation due to their high reliability and transmission efficiency. However, the rising costs and demagnetization risks associated with PMSG are hindering further capacity expansion and adoption of offshore wind turbines (OWT). This paper investigates an offshore wind turbine based on a Homopolar Inductor Alternator (HIA), which can fully leverage the structural advantages of its rotor to facilitate the advancement of offshore wind turbine technology. For this novel offshore wind turbine, an enhanced Sliding Mode-Linear Active Disturbance Rejection Control (SM-LADRC) is employed for the machine-side converter. This control approach effectively estimates and eliminates uncertain disturbances during wind speed variations or other disturbances, ensuring stable power generation. Simulation system was constructed in MATLAB/Simulink, verifying that the improved control method delivers excellent control performance during wind speed variations, promoting the stability of the power generation system.

Linear active disturbance rejection control,Homopolar Inductor Alternator,Offshore Wind Turbine,Sliding mode control