Análise de controladores de um gerador de indução duplamente alimentado aplicado à conversão eletromecânica de energia eólica

Abstract

This work presents modeling and control analysis for a Doubly-Fed Induction Generator (DFIG) commonly applied for wind power generation at variable speed. The machine model is introduced under the dq framework, which lead to the transfer function models considered for the control purpose. Simulation results have been carried out in PowerSim (PSIM) simulation package. Controllers were evaluated in both current and power loops. The former only with PI-type controllers whereas the latter a PI controller was campared with a LQG plus integral action for active power loop. Experimental results were carried out on a workbench assembled with a 3,7 kW wound-rotor induction machine coupled with a 7,5 kW 3f squirrel-cage induction motor.