A globally converging observer of mechanical variables for sensorless PMSM

Author

Mobarakeh, B. Nahid ; Meibody-Tabar, F. ; Sargos, F.M.

Author_Institution

Groupe de Recherche en Electron. et en Electrotech. de Nancy, Inst. Nat. Polytech. de Lorraine, Vandoevre-les-Nancy, France

Volume

2

fYear

2000

fDate

2000

Firstpage

885

Abstract

This paper analyzes Matsui´s paper which presented two PMSM mechanical sensorless control methods (see IEEE Trans. Ind. Electron., vol.43, no.2, p.300-308, 1996). Our studies show that the convergence of the estimated variables depends on their initial values and is not guaranteed. We propose a simple solution to start up the motor from any rotor initial position by modifying Matsui´s methods. A new nonlinear model of PMSM for mechanical sensorless application is also presented. Simulation and experimental results illustrate the validity of the model and the applicability of this approach

Keywords

convergence; machine theory; machine vector control; observers; permanent magnet motors; rotors; starting; synchronous motors; current model-based algorithm; estimated variables convergence; globally converging observer; mechanical sensorless control methods; mechanical variables; motor start-up; nonlinear model; rotor initial position; sensorless PMSM; vector control; voltage model-based algorithm; Controllability; Equations; Magnetic sensors; Mechanical sensors; Permanent magnet machines; Permanent magnet motors; Rotors; Sensorless control; Stators; Synchronous motors;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual

Conference_Location

Galway

ISSN

0275-9306

Print_ISBN

0-7803-5692-6

Type

conf

DOI

10.1109/PESC.2000.879931

Filename

879931