A PIC-controller based doubly fed induction generator (DFIG) for wind energy conversion systems

Abstract

The design details of a PIC-controller based Doubly Fed Induction Generator (DFIG) for wind power generation is described. The proposed PIC-DFIG not only provides a low cost Solution to today's electric power needs, but is also aimed at delivering better power quality, making it ideally suited for wind energy conversion systems operating at variable wind speeds and connected to variable and often, dynamic utility loads. Power quality improvement is achieved by cancellation of the largest and the most annoying harmonics in the supply grid. Additionally, power factor correction and adaptive response to variable reactive loading are also addressed by this design. The proposed design involves two current-controlled power converters connected through a slip ring assembly. The rotor control is achieved using a commercially available PIC controller (model 16F877A) employing a position sensorless, field oriented control algorithm. Some preliminary simulation efforts and modeling scenarios are also presented. © 2011 Springer-Verlag Berlin Heidelberg.