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An improved speed and position estimator for salient permanent-magnet synchronous motors

Oskar Wallmark (Institutionen för energi och miljö, Elteknik) ; Lennart Harnefors (Institutionen för energi och miljö, Elteknik ; Extern) ; Ola Carlson (Institutionen för energi och miljö, Elteknik)
IEEE Transactions on Industrial Electronics Vol. 52 (2005), 1, p. 255-262.
[Artikel, refereegranskad vetenskaplig]

In this paper, an improved phase-locked-loop-type speed and position estimator for permanent-magnet synchronous motor (PMSM) drives is considered. Particular attention is put on salient-rotor PMSMs with fast mechanical dynamics. A method is presented, whereby significantly improved tracking is achieved. While saliency makes nominal-speed stability more difficult to guarantee (an analysis of this is presented), a benefit is that signal-injection methods can be used at low speeds for accurate position estimation, which is also included in the modified estimator.

Nyckelord: Permanent-magnet synchronous motor, phase-locked loop, position estimation, sensorless control, signal injection, speed estimation

Denna post skapades 2006-08-25.
CPL Pubid: 3283


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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik (2005-2017)


Elektroteknik och elektronik

Chalmers infrastruktur