An Efficient Control Strategy of Variable Speed Wind Turbine Generator for Three-Phase Grid-Connected Applications

MOLINA, MARCELO GUSTAVO; MERCADO, PEDRO ENRIQUE

Puerto de Iguazú

Congreso; XIII Encuentro Regional Iberoamericano de CIGRÉ (ERIAC); 2009

International Council on Large Electric Systems (CIGRÉ )

This paper presents a full detailed modeling and a new control scheme of a three-phase grid-connected wind energy conversion system (WECS). The WECS model consists of a variable speed wind turbine generator and the electronic power conditioning system is composed of a back-to-back AC-DC-AC power converter. The control consists of a multi-level hierarchical structure and incorporates a maximum power point tracker (MPPT) for best use of the wind resource. In addition, reactive power compensation of the electric grid is included, operating simultaneously and independently of the active power generation. A three-level voltage source inverter (VSI) is used as interface with the AC power grid. Validation of models and control schemes is performed by using the MATLAB/Simulink environment. Moreover, a 400 W WECS experimental set-up was employed to demonstrate the accuracy of proposed models and control algorithms.