Sensorless acquisition of the rotor position angle for induction motors with arbitrary stator windings

@article{Juliet2004SensorlessAO,
  title={Sensorless acquisition of the rotor position angle for induction motors with arbitrary stator windings},
  author={Jorge Juliet and Joachim Holtz},
  journal={Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.},
  year={2004},
  volume={2},
  pages={1321-1328 vol.2}
}
The anisotropy of a cage rotor is utilized to determine the angular position of the rotor in an induction machine. The switching transients generated by a pulsewidth-controlled inverter serve as test signals. The response of the three-inverter terminal currents is exploited to derive a quasi-instantaneous rotor position signal. The position is sensed at the inverter through the 3-phase motor cable by measuring the current derivatives. The method does not require additional wire connections. It… CONTINUE READING
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