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Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives

Kristof Geldhof (UGent) , Alex Van den Bossche (UGent) and Jan Melkebeek (UGent)
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Abstract
The stator and rotor yoke in a switched reluctance motor form magnetic circuit parts that are typically shared by different phases. If these parts saturate due to the excitation of one phase, this will lead to a change of the magnetic characteristics of all other phases sharing these parts. In several position-sensorless methods, cross-saturation leads to a load-dependent position estimation error. In this paper, the influence of cross-saturation on a resonance-based position estimation method is studied. The method extracts position information from electrical resonances triggered in an idle motor phase. A cross-saturation mitigation scheme is presented in order to reduce the commutation position error. The scheme uses only one additional parameter per phase which can be measured automatically during commissioning of the drive. Experimental results at low and medium speed show that the position estimation error remains smaller dan 2 mechanical degrees over the rated load range.
Keywords
position estimation, cross-saturation, switched reluctance machines, resonance, test pulse

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Please use this url to cite or link to this publication:

Chicago
Geldhof, Kristof, Alex Van den Bossche, and Jan Melkebeek. 2010. “Mitigation of Cross-saturation Effects in Resonance-based Sensorless Switched Reluctance Drives.” In 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE.
APA
Geldhof, K., Van den Bossche, A., & Melkebeek, J. (2010). Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives. 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.
Geldhof K, Van den Bossche A, Melkebeek J. Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives. 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE; 2010.
MLA
Geldhof, Kristof, Alex Van den Bossche, and Jan Melkebeek. “Mitigation of Cross-saturation Effects in Resonance-based Sensorless Switched Reluctance Drives.” 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE, 2010. Print.
@inproceedings{1047923,
  abstract     = {The stator and rotor yoke in a switched reluctance motor form magnetic circuit parts that are typically shared by different phases. If these parts saturate due to the excitation of one phase, this will lead to a change of the magnetic characteristics of all other phases sharing these parts. In several position-sensorless methods, cross-saturation leads to a load-dependent position estimation error. In this paper, the influence of cross-saturation on a resonance-based position estimation method is studied. The method extracts position information from electrical resonances triggered in an idle motor phase. A cross-saturation mitigation scheme is presented in order to reduce the commutation position error. The scheme uses only one additional parameter per phase which can be measured automatically during commissioning of the drive. Experimental results at low and medium speed show that the position estimation error remains smaller dan 2 mechanical degrees over the rated load range.},
  author       = {Geldhof, Kristof and Van den Bossche, Alex and Melkebeek, Jan},
  booktitle    = {2010 XIX International Conference on Electrical Machines (ICEM)},
  isbn         = {9781424441747},
  keyword      = {position estimation,cross-saturation,switched reluctance machines,resonance,test pulse},
  language     = {eng},
  location     = {Rome, Italy},
  pages        = {6},
  publisher    = {IEEE},
  title        = {Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives},
  url          = {http://dx.doi.org/10.1109/ICELMACH.2010.5608302},
  year         = {2010},
}

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