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Sensorless control of non-salient PMSM using asymmetric alternating carrier injection

Ghazimoghadam, M. A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/ISIEA.2011.6108814
  3. Abstract:
  4. Sensorless control of permanent magnet synchronous motors allows reducing cost and complexity, and increasing mechanical robustness and noise immunity. Sensorless methods based on high frequency carrier injection have attracted considerable attention in recent years as they can estimate rotor position in a wide speed range. These methods employ anisotropic properties of rotor to estimate rotor position in ac machines. With internal permanent magnet motors, the high frequency signal injection method can deliver precise sensorless control, however in surface-mounted permanent magnet machines, where a small saliency arises from main flux saturation, the estimation of rotor magnet position is only accurate at light load. In this paper a new method is introduced to estimate load angle in order to compensate for the armature reaction in non-salient PMS motors
  5. Keywords:
  6. Alternating carrier injection ; Load angle estimation ; AC machine ; Anisotropic property ; Armature reaction ; Carrier injection ; Flux saturation ; High frequency ; High-frequency signal injection method ; Light loads ; Load angle ; Mechanical robustness ; Noise immunity ; Permanent magnet motor ; permanent magnet synchronous machine ; Permanent Magnet Synchronous Motor ; Reducing costs ; Rotor magnets ; Rotor position ; Sensor less control ; Sensorless ; Surface-mounted permanent magnet machines ; Wide speed range ; AC generator motors ; Estimation ; Frequency estimation ; Industrial electronics ; Synchronous motors ; Permanent magnets
  7. Source: 2011 IEEE Symposium on Industrial Electronics and Applications, ISIEA 2011, 25 September 2011 through 28 September 2011 ; September , 2011 , Pages 7-12 ; 9781457714184 (ISBN)
  8. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6108814