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Reducing steady-state current distortions in sensorless control strategies by using adaptive test pulses

Frederik De Belie (UGent) , Peter Sergeant (UGent) and Jan Melkebeek (UGent)
Author
Organization
Abstract
The motion states of a salient-pole permanent-magnet synchronous machine (PMSM) at standstill or rotating at low speed are often estimated by measuring the responses on high-frequency test signals. In some drives, the rotor position is computed by measuring the current ripples which are generated by supplying the PMSM periodically with high-frequency voltage test pulses. Besides these ripples, undesired distortions in the steady-state current have been measured. Simulation results have revealed that these distortions are caused by deviations of the steady-state voltage during the test periods. In this paper, a sensorless strategy is discussed where a strong reduction of the aforementioned steady-state distortions is obtained by adapting the test pulses to the steady-state voltage vector. As voltage measurements are often avoided, an estimation of the steady-state voltage is used which is given by the current controller output. The computation of the adaptive test pulses is done taking into account the voltage restriction of the de-bus voltage. Simulation results as well as experimental measurements indicate the effectiveness of the enhanced test pulses in a sensorless controlled interior PMSM.

Citation

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MLA
De Belie, Frederik, Peter Sergeant, and Jan Melkebeek. “Reducing Steady-state Current Distortions in Sensorless Control Strategies by Using Adaptive Test Pulses.” Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC). New York, NY, USA: IEEE, 2008. 121–126. Print.
APA
De Belie, F., Sergeant, P., & Melkebeek, J. (2008). Reducing steady-state current distortions in sensorless control strategies by using adaptive test pulses. Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC) (pp. 121–126). Presented at the 23rd Annual IEEE Applied Power Electronics conference and exposition (APEC 2008), New York, NY, USA: IEEE.
Chicago author-date
De Belie, Frederik, Peter Sergeant, and Jan Melkebeek. 2008. “Reducing Steady-state Current Distortions in Sensorless Control Strategies by Using Adaptive Test Pulses.” In Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC), 121–126. New York, NY, USA: IEEE.
Chicago author-date (all authors)
De Belie, Frederik, Peter Sergeant, and Jan Melkebeek. 2008. “Reducing Steady-state Current Distortions in Sensorless Control Strategies by Using Adaptive Test Pulses.” In Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC), 121–126. New York, NY, USA: IEEE.
Vancouver
1.
De Belie F, Sergeant P, Melkebeek J. Reducing steady-state current distortions in sensorless control strategies by using adaptive test pulses. Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC). New York, NY, USA: IEEE; 2008. p. 121–6.
IEEE
[1]
F. De Belie, P. Sergeant, and J. Melkebeek, “Reducing steady-state current distortions in sensorless control strategies by using adaptive test pulses,” in Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC), Austin, TX, USA, 2008, pp. 121–126.
@inproceedings{750901,
  abstract     = {The motion states of a salient-pole permanent-magnet synchronous machine (PMSM) at standstill or rotating at low speed are often estimated by measuring the responses on high-frequency test signals. In some drives, the rotor position is computed by measuring the current ripples which are generated by supplying the PMSM periodically with high-frequency voltage test pulses. Besides these ripples, undesired distortions in the steady-state current have been measured. Simulation results have revealed that these distortions are caused by deviations of the steady-state voltage during the test periods. In this paper, a sensorless strategy is discussed where a strong reduction of the aforementioned steady-state distortions is obtained by adapting the test pulses to the steady-state voltage vector. As voltage measurements are often avoided, an estimation of the steady-state voltage is used which is given by the current controller output. The computation of the adaptive test pulses is done taking into account the voltage restriction of the de-bus voltage. Simulation results as well as experimental measurements indicate the effectiveness of the enhanced test pulses in a sensorless controlled interior PMSM.},
  author       = {De Belie, Frederik and Sergeant, Peter and Melkebeek, Jan},
  booktitle    = {Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)},
  isbn         = {9781424418732},
  issn         = {1048-2334},
  language     = {eng},
  location     = {Austin, TX, USA},
  pages        = {121--126},
  publisher    = {IEEE},
  title        = {Reducing steady-state current distortions in sensorless control strategies by using adaptive test pulses},
  year         = {2008},
}

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