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Strategy to detect and prevent the current zero-crossing taking into account the ripples

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Abstract
The output voltage of an inverter is often assumed proportional to the drive modulation signal. However, in practice the inverter presents nonlinear characteristics that may significantly affect the output voltage, and this may be critical in the context of sensorless drives and parameter identification. Nowadays, several solutions exist to compensate for the nonlinear behaviour of the inverter. Nevertheless, for the nonlinear effects at zero-crossing currents, no satisfying solution has yet been found. This paper proposes a calculation method that detects the occurrence of one or multiple zero-crossings of the current during a switching period. Then, an offset, selected in order to minimize the disturbance on the torque, is injected in the current control which prevents the current to cross zero. In that way, the disturbing effects of the zero-crossing current on the output voltages can be prevented. The method is evaluated for a permanent-magnet synchronous machine.
Keywords
Variable speed drives, Pulse width modulated inverters, Parameters estimation, AC motor drives

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MLA
Gabriel, Fabien, Frederik De Belie, Pascal Druyts, et al. “Strategy to Detect and Prevent the Current Zero-crossing Taking into Account the Ripples.” 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE, 2010. Print.
APA
Gabriel, F., De Belie, F., Druyts, P., & Neyt, X. (2010). Strategy to detect and prevent the current zero-crossing taking into account the ripples. 2010 XIX international conference on Electrical Machines (ICEM). Presented at the 2010 XIX international conference on Electrical Machines (ICEM 2010), Piscataway, NJ, USA: IEEE.
Chicago author-date
Gabriel, Fabien, Frederik De Belie, Pascal Druyts, and Xavier Neyt. 2010. “Strategy to Detect and Prevent the Current Zero-crossing Taking into Account the Ripples.” In 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE.
Chicago author-date (all authors)
Gabriel, Fabien, Frederik De Belie, Pascal Druyts, and Xavier Neyt. 2010. “Strategy to Detect and Prevent the Current Zero-crossing Taking into Account the Ripples.” In 2010 XIX International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE.
Vancouver
1.
Gabriel F, De Belie F, Druyts P, Neyt X. Strategy to detect and prevent the current zero-crossing taking into account the ripples. 2010 XIX international conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE; 2010.
IEEE
[1]
F. Gabriel, F. De Belie, P. Druyts, and X. Neyt, “Strategy to detect and prevent the current zero-crossing taking into account the ripples,” in 2010 XIX international conference on Electrical Machines (ICEM), Rome, Italy, 2010.
@inproceedings{923614,
  abstract     = {The output voltage of an inverter is often assumed proportional to the drive modulation signal. However, in practice the inverter presents nonlinear characteristics that may significantly affect the output voltage, and this may be critical in the context of sensorless drives and parameter identification. Nowadays, several solutions exist to compensate for the nonlinear behaviour of the inverter. Nevertheless, for the nonlinear effects at zero-crossing currents, no satisfying solution has yet been found. This paper proposes a calculation method that detects the occurrence of one or multiple zero-crossings of the current during a switching period. Then, an offset, selected in order to minimize the disturbance on the torque, is injected in the current control which prevents the current to cross zero. In that way, the disturbing effects of the zero-crossing current on the output voltages can be prevented. The method is evaluated for a permanent-magnet synchronous machine.},
  author       = {Gabriel, Fabien and De Belie, Frederik and Druyts, Pascal and Neyt, Xavier},
  booktitle    = {2010 XIX international conference on Electrical Machines (ICEM)},
  isbn         = {9781424441747},
  keywords     = {Variable speed drives,Pulse width modulated inverters,Parameters estimation,AC motor drives},
  language     = {eng},
  location     = {Rome, Italy},
  pages        = {6},
  publisher    = {IEEE},
  title        = {Strategy to detect and prevent the current zero-crossing taking into account the ripples},
  url          = {http://dx.doi.org/10.1109/ICELMACH.2010.5608256},
  year         = {2010},
}

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