DFIM

This paper presents the doubly fed induction motor (DFIM) speed control using  adaptive  fuzzy  logic  PI  (AFLPI)  controller  to  give  better dynamic performances. Before the advent of modern technology, integral proportional based  current  controller  is  usually  used  due  to  its  simplicity. But, the effectiveness of closed-loop control is widely affected by applied this type of controls, taking into account that the PI controllers have tuning problems. To overcome the problem, a new technique AFLPI based speed controller for direct  field  oriented  control  fed  DFIM  to  get  fast  speed  response and to minimize the torque ripple. The application of this type of control is very satisfactory  to  replace  the  conventional  PI  controller  and,  even  the  fuzzy logic  PI  (FLPI)  controller.  The  performances  of  DFIM  driving  under  the field-oriented application are simulated under different operating conditions using the AFLPI controller. The simulation results obtained with AFLPI are compared  with  those  obtained  in  the  case  of  the  FLPI  controller and the conventional  PI  controller.  Accordingly,  an  improvement  in  dynamic  and robustness  is  clearly  appears  in  AFLPI  controller  simulation  results compared to the others aforementioned controllers. Simulation Results are presented  for  the  three  techniques  using  Matlab/Simulink  to  prove  the dynamic performances and robustness.