A current-observer-based induction motor speed sensorless control and use of DC link current

We have proposed a current observer-based speed sensorless vector control system which is composed in a rotating reference frame. The characteristic improvement of this system is discussed by taking into account observer gain. The stability of the system has been investigated by the trajectories of...

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Bibliographische Detailangaben
Hauptverfasser:	Mineo Tsuji, Fujin Xu, Tsuruda, J., Hamasaki, S., Yamada, E.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	current observer DC link current induction motor Induction motors Iron Machine vector control observer gain Observers Sensorless control sensorless vector control Stability analysis Trajectory
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Beschreibung
Zusammenfassung:	We have proposed a current observer-based speed sensorless vector control system which is composed in a rotating reference frame. The characteristic improvement of this system is discussed by taking into account observer gain. The stability of the system has been investigated by the trajectories of poles and zeros. The effectiveness of the proposed system has been investigated by experimentation. Furthermore, a speed sensorless system in which a DC link current sensor is only used without phase currents sensors is proposed and discussed.
DOI:	10.1109/SPEEDAM.2012.6264429