LAUSR

This paper presents the comparative study of control techniques which are generally employed for doubly fed induction generator (DFIG)-based wind energy conversion systems (WECS). Vector control, direct torque control and direct power control schemes are mostly employed to control DFIG-based WECS. Therefore, this paper includes comparative analysis of vector control, direct torque control and direct power control as well as their derivative control schemes. This paper highlights the merits and demerits of different schemes on major aspects such as transient condition, dynamic response, steady-state response, power quality, their impact on power network and torque ripple in different operating and environmental conditions. The results of such control schemes have been compared to conclude the recent status and highlight the future prospective for DFIG-based WECS.