Title :
Analysis and Design of a Position Observer With Resistance Adaptation for Synchronous Reluctance Motor Drives
Author :
Tuovinen, Tommi ; Hinkkanen, Marko ; Luomi, J.
Author_Institution :
Dept. of Electr. Eng., Aalto Univ., Espoo, Finland
Abstract :
A back-electromotive-force-based reduced-order position observer with stator-resistance adaptation is analyzed for motion-sensorless synchronous reluctance motor (SyRM) drives. Analytical equations for steady-state estimation errors and stability conditions are derived (with and without resistance adaptation), taking into account errors in the parameter estimates. The effect of the observer gain on the noise reduction is studied by means of eigenvector analysis. A robust gain selection is proposed, which maximizes the allowed uncertainties in the parameter estimates. The proposed observer design is experimentally evaluated using a 6.7-kW SyRM drive; stable operation is demonstrated at low speeds under various parameter errors.
Keywords :
adaptive control; control system analysis; eigenvalues and eigenfunctions; electric current control; observers; reluctance motor drives; sensorless machine control; stability; back electromotive force; eigenvector analysis; motion sensorless synchronous reluctance motor; noise reduction; observer gain; power 6.7 kW; reduced order position observer; robust gain selection; stability condition; stator resistance adaptation; steady state estimation error; synchronous reluctance motor drives; Estimation error; Observers; Rotors; Stability analysis; Stators; Steady-state; Uncertain systems; Observer; speed sensorless; stability conditions; stator resistance estimation;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2012.2228616
