A Remote and Sensorless Stator Winding Resistance Estimation Method for Thermal Protection of Soft-Starter-Connected Induction Machines

@article{Zhang2008ARA,
  title={A Remote and Sensorless Stator Winding Resistance Estimation Method for Thermal Protection of Soft-Starter-Connected Induction Machines},
  author={Pinjia Zhang and Bin Lu and Thomas G. Habetler},
  journal={IEEE Transactions on Industrial Electronics},
  year={2008},
  volume={55},
  pages={3611-3618}
}
This paper proposes a remote and sensorless stator winding resistance estimation method for thermal protection of soft-starter-connected induction motors. By changing the gate drive signals of the thyristors in the soft starter, a small adjustable dc bias can be intermittently injected to the motor for the estimation of the stator winding resistance. Based on online and continuous monitoring of the stator winding resistance, the stator winding temperature can be monitored using only motor… CONTINUE READING
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