Power Quality Issue, Solution and Analysis: DFIG

Nowadays, the wind energy running cost is the cheapest renewable electrical energy. This study describes different static power converters for a doubly fed induction generator that are based on power quality solutions (DFIG). The latest isolated & grid-connected converter employed like AC-DC-AC bidirectional converter is used for active and reactive power compensation, without dc-link AC-AC converter for voltage swell and swag, Multilevel inverter for voltage improvement, and facts devices such as D-STATCOM, UPQC, UPS, STATCOM, SDVR mitigatory for the power quality problem. Various topologies are discussed for mitigation of power quality through the grid code. On the other hand, various controllers joined to the power electronics converter play an important role in solving sag, swell harmonics, flicker, noise, spinning reverse, and so on. This paper investigates various power converters and an electronic controller for DFIG. At the end, different power quality indices and problems are discussed for faulty operating conditions.