Control of Grid Connected PMSG-Based Wind Turbine System with Back-To-Back Converter Topology Using Resonant Controller

This paper presents modeling and control strategy for
the grid connected wind turbine system based on Permanent Magnet
Synchronous Generator (PMSG). The considered system is based on
back-to-back converter topology. The Grid Side Converter (GSC)
achieves the DC bus voltage control and unity power factor. The
Machine Side Converter (MSC) assures the PMSG speed control.
The PMSG is used as a variable speed generator and connected
directly to the turbine without gearbox. The pitch angle control is not
either considered in this study. Further, Optimal Tip Speed Ratio
(OTSR) based MPPT control strategy is used to ensure the most
energy efficiency whatever the wind speed variations. A filter (L) is
put between the GSC and the grid to reduce current ripple and to
improve the injected power quality. The proposed grid connected
wind system is built under MATLAB/Simulink environment. The
simulation results show the feasibility of the proposed topology and
performance of its control strategies.