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Parameterless rotor position estimation in a direct-torque controlled salient-pole PMSM without using additional test signals

Frederik De Belie (UGent) , Thomas Vyncke (UGent) and Jan Melkebeek (UGent)
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Abstract
A vector controller is often applied to control a permanent-magnet synchronous machine (PMSM) at different operating points. A well-performing vector control method is the Direct Torque Control (DTC). From measurements of the stator phase currents only, the stator flux can be estimated and controlled in order to obtain the desired electromagnetic torque. To achieve accurate flux estimations in salient-pole machines the saliency should be taken into account for which the rotor position can be required. To avoid a position sensor in the DTC-PMSM, this paper discusses a rotor position estimator that computes the rotor position from the ripple in the stator current. For this purpose, the stator voltage, the stator current ripple and the relation of these variables to the rotor position is studied. The main advantage of this estimation method is that it can seamlessly be applied within existing direct torque controllers that operate in a broad speed range from standstill to high speed.
Keywords
rotors, permanent magnet machines, synchronous machines, torque control, parameterless rotor position estimation, direct-torque control, vector controller, salient-pole permanent-magnet synchronous machine, stator flux, stator phase currents, machine vector control, stator voltage, stator current ripple, electromagnetic torque

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Citation

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Chicago
De Belie, Frederik, Thomas Vyncke, and Jan Melkebeek. 2010. “Parameterless Rotor Position Estimation in a Direct-torque Controlled Salient-pole PMSM Without Using Additional Test Signals.” In 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE.
APA
De Belie, F., Vyncke, T., & Melkebeek, J. (2010). Parameterless rotor position estimation in a direct-torque controlled salient-pole PMSM without using additional test signals. 2010 XIX international conference on Electrical Machines (ICEM). Presented at the 2010 XIX international conference on Electrical Machines (ICEM 2010), Piscataway, NJ, USA: IEEE.
Vancouver
1.
De Belie F, Vyncke T, Melkebeek J. Parameterless rotor position estimation in a direct-torque controlled salient-pole PMSM without using additional test signals. 2010 XIX international conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE; 2010.
MLA
De Belie, Frederik, Thomas Vyncke, and Jan Melkebeek. “Parameterless Rotor Position Estimation in a Direct-torque Controlled Salient-pole PMSM Without Using Additional Test Signals.” 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE, 2010. Print.
@inproceedings{923671,
  abstract     = {A vector controller is often applied to control a permanent-magnet synchronous machine (PMSM) at different operating points. A well-performing vector control method is the Direct Torque Control (DTC). From measurements of the stator phase currents only, the stator flux can be estimated and controlled in order to obtain the desired electromagnetic torque. To achieve accurate flux estimations in salient-pole machines the saliency should be taken into account for which the rotor position can be required. To avoid a position sensor in the DTC-PMSM, this paper discusses a rotor position estimator that computes the rotor position from the ripple in the stator current. For this purpose, the stator voltage, the stator current ripple and the relation of these variables to the rotor position is studied. The main advantage of this estimation method is that it can seamlessly be applied within existing direct torque controllers that operate in a broad speed range from standstill to high speed.},
  author       = {De Belie, Frederik and Vyncke, Thomas and Melkebeek, Jan},
  booktitle    = {2010 XIX international conference on Electrical Machines (ICEM)},
  isbn         = {9781424441747},
  keyword      = {rotors,permanent magnet machines,synchronous machines,torque control,parameterless rotor position estimation,direct-torque control,vector controller,salient-pole permanent-magnet synchronous machine,stator flux,stator phase currents,machine vector control,stator voltage,stator current ripple,electromagnetic torque},
  language     = {eng},
  location     = {Rome, Italy},
  pages        = {6},
  publisher    = {IEEE},
  title        = {Parameterless rotor position estimation in a direct-torque controlled salient-pole PMSM without using additional test signals},
  url          = {http://dx.doi.org/10.1109/ICELMACH.2010.5608300},
  year         = {2010},
}

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