Matrix converter control study of doubly-fed induction wind turbine generator system

The one of the challenges faced by the large-scale development and use wind energy is the on grid requirement made by the power company. We use matrix converter to connect the rotor of the doubly-fed induction wind turbine generator system (DFIG) and the power grid. The indirect space vector modulation strategy and the constant switch frequency power control based on the matrix converter were proposed. The simulation model under the Matlab/Simulink software was built. The simulation curves were obtained. The simulation results proved that the matrix converter can be used in the DFIG and the proposed control method can realize the average power and the reactive power decoupled control. The simulation also verified that the control structure is simple, the control need not the PI control. The machine parameters have little influence to the control and the harmonics content is minor. The on grid power energy quality requirement about the wind power can be satisfied.