Direct Torque and Reactive Power Control of Grid Connected Doubly Fed Induction Generator for the Wind Energy Conversion

The purpose of this paper is to show the performance of the direct torque and reactive power control technique (DTRPC), combined with fuzzy logic algorithms, applied to a doubly fed induction generator (DFIG) driven by a wind turbine, taking into account the variation of wind allowing the three modes (Sub, Super and synchronous) operation, with a particular focus on synchronous mode, well as the possibility of management and the active-reactive power control. Especially, operation as a local reactive power compensator. This analysis is treated by taking account some constraints that reflect the real operation of a wind driven, such as the pursuit of the references and the influence of the system physical state. The captured wind energy is optimized to extract the maximum power using the MPPT algorithm. The studied system control is tested and validated through numerical simulation. The obtained results show the effectiveness of the control strategy leading to best performances.