Experimental research and control of PMSG based wind turbine connected to grid

This paper presents an experimental study of a wind energy conversion system based on a permanent magnet synchronous generator (PMSG). The objective of this work is to make an operational test bench platform and propose a control strategy for all the system (generator side control and grid side control). The wind turbine has been replaced by an emulator based on a DC motor. The proposed strategy comprises the control of the generator for maximum power point tracking (MPPT) under varying wind conditions; the DC motor is controlled so as to have the same functioning as a wind turbine. The system is connected to a three-phase network by means of: an IGBT rectifier, a DC bus, an IGBT inverter and a transformer. A detailed study of the test bench elements and its control scheme is presented. The experimental results are obtained and captured from the controlDesk software in real time using two DSPACE cards; however they show the feasibility and robustness of the proposed control strategy.