Control of PMSG wind electrical system in network context and during the MPP tracking process

Abstract

This study presents a control strategy for grid-connected WES based on a permanent magnet synchronous generator (PMSG). The power system comprises five PMSG-based 2 MW which connected to the dc-bus with rectifiers, whereas the grid-side inverter is connected to the power grid throughout a grid-side filter. The objectives of grid-side inverter are to deliver the energy from the PMSGs side to the power grid, to regulate the dc-bus and to achieve unity power factor (UPF). The generator side converters are employed to control the velocities of the PMSGs with maximum power point tracking algorithm. Moreover, a pitch control algorithm is used. The proposed vector control technique (VCT) is able to fully decouple the quadrature (q) and direct (d) components of the currents. Simulations results using MATLAB/Simulink software are presented to validate the proposed control scheme for fault conditions into the grid as well as for normal working conditions.