A hybrid speed estimator of flux observer for induction motor drives

  title={A hybrid speed estimator of flux observer for induction motor drives},
  author={Kozo Ide and Jung-Ik Ha and Mitsujiro Sawamura},
  journal={IEEE Transactions on Industrial Electronics},
This paper proposes a hybrid speed estimator that gives the synergetic effect between the model- and the saliency-based field orientations for induction motor drives. The model-based field orientation consists of a flux observer with an adaptive speed estimator that has unstable regions at zero frequency and zero speed. Saliency-based flux orientation utilizes magnetic saliencies caused by saturation and high-frequency injection that causes the torque ripples due to the chattering. The… CONTINUE READING
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