dSpace based direct-driven permanent magnet synchronous wind power system modeling and simulation

When wind speed is below the rated value, the efficiency of captured wind energy must be maximized and the mechanical oscillation be guaranteed to be small. To deal with these problems, This essay describes the advantages of the direct-driven permanent magnet synchronous wind power system, and then introduces the two-frequency-loop model based on frequency separation principle, The LPV model and LPV control method are suggested for the high-frequency part of the system. The output of the high-frequency part is used to compensate the mechanical torque. The mathematical model is built with MATLAB, and the online test is carried out by dSpace. The simulation results show that the controller reduces mechanical oscillation effectively, and enhances the system reliability.