Modeling and Simulation of Direct-drive Permanent Magnet Tidal Current Energy Generation System
According to the characteristics of tidal current energy generation,a mathematical model of direct-drive permanent magnet tidal current energy generation system is built,which includes hydro turbine model,permanent magnet synchronous generator model and converter model as well.Through the control of converter at generator and power grid side,the simulation model of tidal current energy generation system is built in Matlab/Simulink software environment,and the device is connected to single machine infinite bus system.The tidal current energy generation system is simulated in the simulated natural tidal current environment.The simulation results demonstrate the superiority of the permanent magnet synchronous generator and the good dynamic and static performance of the control system,operating stably when the tidal current speed varies.Converter can realize independent control outputting active power and reactive power,which verifies the correctness and validity of the proposed scheme.
tidal current energy generationdirect-drive permanent magnetconvertermathematical modelsingle machine infinite bus systemsimulation