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Decoupled control has been widely used in the DIFG (doubly fed induction generator) which needs the rotor position as well as the rotor speed for the control system. A lot of research has been done in the sensorless control field for the DFIG because of the disadvantages of the speed sensor. Three representative sensorless control strategies are considered in this paper and they are compared in terms...
An improved control scheme for sensorless vector control of grid-connected doubly fed induction generators (DFIGs) is presented when the network voltage is unbalanced. The system is based on a rotor current model reference adaptive system (MRAS) in the stator stationary reference frame. The observed rotational speed and rotor position angle are employed for the reference frame transformations of rotor...
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