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Improved rotor position estimation in extended back-EMF based sensorless PM brushless AC drives with magnetic saliency

By Y Li, Z Q Zhu, D Howe and Chris Bingham

Abstract

An improved extended back-EMF based sensorless control method is proposed for a brushless AC motor equipped with an interior permanent magnet rotor. It accounts for dq-axis cross-coupling magnetic saturation by introducing an apparent mutual winding inductance. The error which results in the estimated rotor position when the influence of cross-coupling magnetic saturation is neglected is analyzed analytically, predicted by finite element analysis, and confirmed experimentally, for various d- and q-axis currents. It is shown that a significant improvement in the accuracy of the rotor position estimation can be achieved by the proposed method, as confirmed by measurements

Topics: H600 Electronic and Electrical Engineering
Publisher: Institute of Electronic and Electrical Engineering
Year: 2007
DOI identifier: 10.1109/IEMDC.2007.383579
OAI identifier: oai:eprints.lincoln.ac.uk:2545

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Citations

  1. An extended electromotive force model for sensorless control of interior permanent-magnet synchronous motors," doi
  2. (2003). Envaluation of saturation and cross-magnetization effects in interior permanent-magnet synchronous motor," doi
  3. (2003). Sensorless control of interior permanent-magnet machine drives with zero-phase lag position estimation," doi
  4. (2002). Sensorless control strategy for salient-pole PMSM based on extended EMF in rotating reference frame," doi
  5. (2003). Sensorless drive of surface-mounted permanent-magnet motor by high-frequency signal injection based on magnetic saliency," doi
  6. (1999). Sensorless torque control of salient-pole synchronous motor at zero-speed operation," doi
  7. (1999). Sensorless torque control ofsalient-pole synchronous motor at zero-speed operation," doi

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