Research on Harmonic Suppression Method of Grid-Side Converter of DFIG Based on LCL Filter
This paper proposes a harmonic suppression method based on LCL filter to solve the harmonic problem caused by the grid-side converter(GSC)of DFIG in power system.This method proposes an equivalent impedance model of the GSC,optimizes the control strategy of the LCL filter,effectively reduces the harmonic content of the output current of the DFIG,and improves the power quality.The results show that this method is not only feasible and effective,but also highly adaptable and can operate stably under different operating conditions.The research in this apaper provides a new solution for harmonic suppression of GSC of DFIG,which helps to improve the overall performance and stability of the wind power system and has positive significance for the safe and economical operation of the power system.
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