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Torque and reactive power control of a doubly fed induction machine by position sensorless scheme

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2 Author(s)
Longya Xu ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Wei Cheng

A novel control strategy to realize decoupled control of torque and reactive power for a doubly excited induction machine using a position sensorless scheme is proposed. The critical issues related to the torque angle estimation and control for a doubly excited induction machine are discussed. Compared to the other position sensorless schemes for a doubly fed machine, the proposed control method uses only the rotor voltages and currents as the feedback signals, which substantially reduces the costs and enhances the reliability of the position sensorless control of a doubly fed AC machine. Computer simulation and experimental results are given to verify the position sensorless control scheme

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Industry Applications, IEEE Transactions on  (Volume:31 ,  Issue: 3 )