A Robust Finite Control Set Applied to the DFIG Power Control

This paper proposes a robust finite control set for doubly-fed induction generator power control. In this way, the proposed robust finite control has two components of the predicted rotor voltage. The first term calculates the voltage considering the rotor current references and the second term is designed considering the mistakes due to parameters' estimation. The mentioned errors due to parameters' variations were modeled as rotor current changes. Hence, the controller calculates the predicted rotor voltage considering parameter variations and rotor current references. So that, the minimized cost function selects the voltage vector to be supplied to the rotor of the machine. The influence of the estimation errors for variations on R-2 and sigma L-2 was also investigated. The results obtained in a setup confirm the controller performance. (AU)