The implementation of direct virtual torque control and direct power control for DFIG in wind energy system using DSpace 1103

This paper proposed an experimental approach to DVTC and DPC control algorithms for Wind-Turbine System - DFIG using the DSpace software 1103 in conjunction with Matlab/Simulink. The algorithms for controlling rotor-side converter (RSC) of a doubly-fed induction generator (DFIG) system include direct power control (DPC) strategy for controlling power flow and direct virtual torque control (DVTC) strategy for synchronizing DFIG with grid. There is no proportional-integral (PI) regulator in both of strategies. The essence of two strategies is selection appropriate voltage vectors on the rotor-side converter. The experimental results on a 1.5-kW machine are shown to validate this approach.