Simulation of Frequency and Power Control Strategy for Stator-Controlled DFIG Applied for Fractional Frequency Transmission System

Nowadays, research related to wind power continues to be of interest. In this paper, the control strategy of the rotor-type Doubly-Fed Induction Generator (DFIG) power generation system applied to the Fractional Frequency Transmission System (FFTS) is simulated. Simulations include variable speed constant frequency control, and independent control of the active and reactive power of DFIG. Based on the analysis of the new connection topology of the generator and the mathematical model of the DFIG, the field-oriented control equation for the system is given. The simulation proves that the system can realize the frequency control and power control of the DFIG and can be well applied to FFTS.