A Frequency Demodulation Approach to Induction Motor Speed Detection

@inproceedings{Gao2011AFD,
  title={A Frequency Demodulation Approach to Induction Motor Speed Detection},
  author={Zhi Gao and Larry A. Turner and Roy S. Colby and Benoit Leprettre},
  year={2011}
}
Rotor slot harmonics are found in the stator current waveforms for most squirrel-cage induction motors. These harmonics are caused by the finite number of rotor slots in a motor, and their frequencies are inherently correlated with the motor's rotational speed. A frequency demodulation approach is proposed in this paper to continuously and accurately track the rotational speed for induction motors that are operated at either dynamic or steady-state conditions from fixed-frequency power supplies… CONTINUE READING

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