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Seamless integration of a low-speed position estimator for IPMSM in a current-controlled voltage-source inverter

Frederik De Belie (UGent) and Jan Melkebeek (UGent)
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Abstract
This paper deals with the seamless integration of high-frequency test voltages for IPMSM rotor-position estimation in the discrete-time current-controller with fixed sampling frequency of a voltage-source converter. Pulsed test voltages are used that don’t interfere with the current samples taken to control the phase currents. For this purpose, an asymmetric pulse-width modulator is applied. As a result of this strategy, the controller output influences the test voltages and consequently the current response from which the rotor position is estimated. Therefore, in this paper, a first strategy is studied in which the applied test voltages are computed taking into account the controller output. A second method is discussed as well in which the controller output is slightly delayed so that this output has no influence on the test signals. Despite the disadvantage of a small time delay, compared to the first method, no additional calculations are required to compute the test voltages.
Keywords
synchronous motor, permanent-magnet motor, sensorless control, pulse-width modulation, current control

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Citation

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

Chicago
De Belie, Frederik, and Jan Melkebeek. 2010. “Seamless Integration of a Low-speed Position Estimator for IPMSM in a Current-controlled Voltage-source Inverter.” In Sensorless Control for Electrical Drives, 1st Symposium, 148–153. New York, NY, USA: IEEE.
APA
De Belie, F., & Melkebeek, J. (2010). Seamless integration of a low-speed position estimator for IPMSM in a current-controlled voltage-source inverter. Sensorless Control for Electrical Drives, 1st Symposium (pp. 148–153). Presented at the 1st Symposium on Sensorless Control for Electrical Drives (SLED 2010), New York, NY, USA: IEEE.
Vancouver
1.
De Belie F, Melkebeek J. Seamless integration of a low-speed position estimator for IPMSM in a current-controlled voltage-source inverter. Sensorless Control for Electrical Drives, 1st Symposium. New York, NY, USA: IEEE; 2010. p. 148–53.
MLA
De Belie, Frederik, and Jan Melkebeek. “Seamless Integration of a Low-speed Position Estimator for IPMSM in a Current-controlled Voltage-source Inverter.” Sensorless Control for Electrical Drives, 1st Symposium. New York, NY, USA: IEEE, 2010. 148–153. Print.
@inproceedings{1019300,
  abstract     = {This paper deals with the seamless integration of high-frequency test voltages for IPMSM rotor-position estimation in the discrete-time current-controller with fixed sampling frequency of a voltage-source converter. Pulsed test voltages are used that don’t interfere with the current samples taken to control the phase currents. For this purpose, an asymmetric pulse-width modulator is applied. As a result of this strategy, the controller output influences the test voltages and consequently the current response from which the rotor position is estimated. Therefore, in this paper, a first strategy is studied in which the applied test voltages are computed taking into account the controller output. A second method is discussed as well in which the controller output is slightly delayed so that this output has no influence on the test signals. Despite the disadvantage of a small time delay, compared to the first method, no additional calculations are required to compute the test voltages.},
  author       = {De Belie, Frederik and Melkebeek, Jan},
  booktitle    = {Sensorless Control for Electrical Drives, 1st Symposium},
  isbn         = {9781424470358},
  keywords     = {synchronous motor,permanent-magnet motor,sensorless control,pulse-width modulation,current control},
  language     = {eng},
  location     = {Padua, Italy},
  pages        = {148--153},
  publisher    = {IEEE},
  title        = {Seamless integration of a low-speed position estimator for IPMSM in a current-controlled voltage-source inverter},
  year         = {2010},
}