The main control cabinet utilizes advanced PLC systems such as Beifu or Siemens to reasonably control the fan blade speed based on meteorological conditions such as wind speed and direction, achieving maximum wind energy capture at lower wind speeds, constant speed at moderate wind speeds, and constant frequency and constant power operation at higher wind speeds. Simultaneously collect operational signals from the pitch system, yaw system, gearbox, engine compartment, etc., monitor internal faults in the transmission system, generator system, etc., optimize maintenance strategies, reduce unplanned shutdowns, and lower the operating and maintenance costs of the unit.