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Control of a PMSG Based Wind Turbine system with Parallel Connected DC Chopper at Grid Side Converter

Journal: International Journal for Modern Trends in Science and Technology (IJMTST) (Vol.4, No. 9)

Publication Date:

Authors : ; ;

Page : 14-22

Keywords : IJMTST;

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Abstract

In this paper, a grid-connected converter for a direct-driven permanent magnet synchronous generator (D-PMSG) and an active power filter (APF), is proposed to enhance the low voltage ride through (LVRT) capability and improve power quality. During normal operation, the main grid-side converter maintains the DC-link voltage constant, whereas the auxiliary grid-side converter functions as an APF with harmonic suppression and reactive power compensation to improve the power quality. During grid faults, a hierarchical coordinated control scheme for the generator-side converter, main grid-side converter and auxiliary grid-side converter, depending on the grid voltage sags, is presented to enhance the LVRT capability of the direct-driven PMSG WT. The feasibility and the effectiveness of the proposed system's topology and hierarchical coordinated control strategy were verified using MATLAB/Simulink simulations.

Last modified: 2018-10-22 01:10:01