Start up and control of a DFIG wind turbine test rig

Power generated from wind is a fast growing renewable source of the world energy consumption. A test bench for comprehensive research on the doubly fed induction generator (DFIG) used as wind turbine is implemented. The wind energy is emulated with a synchronous machine according to the wind profile specified in the computer. Two inverters in a back to back configuration between the rotor and the grid are used to control the DFIG. The space vector pulse width modulation (SVPWM) technique is used in both inverters. Special attention has been placed in the offset adjustment of the encoder and the stator synchronization and connection to the grid. Finally, the regulation of the DFIG is performed controlling the active and reactive power to their reference values.