Wind Energy Conversion System Based On DFIG With Three-Phase Series Active Filter And Single DC-Link

Wind Energy Conversion System Based on DFIG with Three-Phase Series Grid Side Converter and Single DC-Link

“…From the proposed system presented in Fig. 3, it is possible to obtain the series grid side converter and grid side converter models as follows [47], [50]:…”

“…In this configuration there is a circulating loop between SGSC and GSC, in which the following equations are derived [46], [47]:…”

“…In this section, the PWM strategies of the GSC and SGSC are presented. The PWM strategy of the RSC is presented in [46], [47].…”

“…The proposed system in this work was previously analyzed in [46] for a static voltage sag condition and in [47] for series active filter applications. In [46] and [47], the experimental results were obtained without DFIG and only validated the GSC and SGSC controls. In this work, simulation results for a dynamic voltage sag condition (i.e., with inception and clearance of the voltage sag) with harmonic distortions and imbalances are presented and analyzed.…”

“…The work also presents more complete experimental results for a grid voltage sag, demonstrating the compensation capacity of the proposed system and validating the controls employed in all three converters. In addition, the control strategy proposed for SGSC in this work is able to deal with voltage imbalances and harmonic distortions simultaneously, unlike the controls proposed in [46] and [47]. The present work also brings a detailed controller design to obtain the parameters of the controllers employed in the system.…”