An adaptive RST fuzzy logic and an adaptive PI fuzzy logic controllers of a DFIG in Wind Energy Conversion

This paper proposes an adaptive logic controllers for a wind energy conversion system (WECS) based on doubly fed induction generator (DFIG). Active and reactive power flow is controlled simultaneously with a four control methods of the active and reactive currents. These include a direct PI controller, A RST controller, an adaptive fuzzy logic PI (AFLC-PI) and an adaptive RST fuzzy logic with virtual reference (VFLC-RST) controls. The results demonstrate that VFLC-RST are very effective in improving the transient power system stability and very robust against variable transmission line parameters