Design method of main circuit parameter based on theoretical calculation and engineering practice is developed for permanent magnetic direct-drive wind power generating system with dual PWM converter topology. DC bus voltage, DC bus filter capacitor, rating value of power electronic devices and gird-side LCL filter parameters are calculated for an experimental wind power generating system. Hardware platform is built using calculated parameters, and the experimental results show that the design method is viable and expected design goal is achieved.
Dynamic Model of Active Front-End Converters with 2DOF-PI Controllers for DC Bus Voltage Control