Modeling and dynamic simulation on 1MW PMSG wind power system

This article establishes the SVPWM simulation model and describes the implementation method of SVPWM technique in PSCAD/EMTDC in order to truly reflect the process of the dynamic switching and the harmonic characteristics of the converter.In this article it also achieves the functions of the maximum power tracking strategy(MPPT),permanent magnet generator stator current tracking,decoupling control and network-side DC bus voltage stability control.Meanwhile,it improves the software phase-locked loop(SPLL) of the grid-side PWM converter to enable it to track the fundamental positive sequence voltage grid rapidly and accurately and this would be helpful for improving the dynamic control performance of grid-side converter in the grid asymmetric faults conditions.