Impact of generator control parameters on wind generator fault detection

This paper presents deep investigation of the generator control parameters impact on the detection of rotor electrical asymmetry in wind turbine doubly fed induction generator. This impact cannot be ignored when the fault detection is based on the analysis of d- and q-rotor current error signals inside the rotor side inverter controller. In order to evaluate the effectiveness of these signals as diagnostic indexes to rotor fault in respect to different values of the control parameters, several simulation and experimental tests were carried out. Results are presented to demonstrate the sensitivity of the d- and q-rotor current error signals for rotor electrical asymmetry detection in comparison with previous stator current and total power analysis methods.