Control of doubly-fed reluctance generators for wind power applications

The paper deals with flux and voltage vector oriented control of a transpiring brushless doubly-fed reluctance generator (BDFRG) technology for grid-connected wind turbines. The BDFRG features the low operation & maintenance costs by using a fractional inverter, and offers the high reliability of brushless structure at competitive performance to its popular slip-ring companion, the doubly-fed induction generator (DFIG). The relative experimental results for the two parameter independent speed and reactive power control algorithms have successfully verified the simulation studies on a custom-built machine for various loading profiles.