Harmonic mitigation methods for wind energy conversion systems: A review

Wind energy source is one of the prominently renewable energy source as wind would never dies till the existence of the universe. Previously we were using fixed speed wind turbines in wind energy conversion system (WECS), but due to some disadvantage of fixed speed wind turbine system, we mostly used variable speed wind turbine system in most of the places. Variable speed wind turbine uses power electronic converter in order to extract maximum power, but power electronic converter are a source of harmonics due to its switching action. This harmonics in the voltage and current of wind power, deteriorate the power quality of wind power. To reduce the harmonics in this WECS, several methods have been proposed in the past so many years. This paper presents a review of some of the harmonic mitigation methods that presents in the past many years in order to increase of the power quality.