Fuzzy Control for Variable-Speed Constant-Frequency Generators

Due to high operation efficiency and control flexibility, the AC excited double-fed induction generator can not only realize Variable-speed constant-frequency (VSCF), a new typed operational mode for the doubly fed induction generator based wind power generation system is proposed based on the grid-connected power transmission. A control method aimed at increasing efficiency and maximizing energy capture using the stator flux-orientation control technology is introduced. the excitation controller was achieved using fuzzy-PID control. The results of simulation and experimental study testify the feasibility of the proposed strategy, meanwhile validate the optimal power efficiency tracking and optimal wind power capturing can be achieved.