Switching Harmonic Ripple Attenuation in a Matrix Converter-Based DFIG Application

Abstract

The use of matrix converters (MC) as interfaces between the grid and the traditional doubly fed induction generators (DFIG) in wind power applications introduces high harmonic frequencies of which traditional passive filters may not be suitable for attenuation. This paper analyses the harmonic frequencies generated by the MC and proposes a hybrid harmonic filter (HHF) for harmonic and power factor compensation in the grid side of the MC. The HHF achieved 1.02% THD% of the fundamental 50Hz with little to no impact to the dynamic stability of the MC. The results were simulated and confirmed with MATLAB/Simulink simulation software.