The injection of wind power into a grid using a multi-level inverter controlled by SVPWM

This work covers the study of a variable speed wind turbine chain using a Permanent Magnet Synchronous Generator (PMSG) to produce energy injected into a grid. The characteristic parameters of the grid are frequency, the symmetry of the three-phase system and voltage waveform. When the output voltage wave is not sinusoidal, disturbances can affect the proper performance of the equipment connected to the grid. Therefore, to overcome this problem, we have integrated into this chain a back to back converter made up of a two-level rectifier and a five-level inverter NPC that are controlled by the SVPWM technique. The converter control strategy is detailed. This study was handled under the Matlab/Simulink interface. The simulation results demonstrate the high performance of this control strategy in renewable energy applications: reduction of total harmonic distortion and increase in power factor.