Comparison of methods for back EMF estimation at low speed for PMSM drive

Author

Urbanski, Konrad

Author_Institution

Inst. of Control & Inf. Eng., Poznan Univ. of Technol., Poznan, Poland

fYear

2014

fDate

3-5 Dec. 2014

Firstpage

32

Lastpage

37

Abstract

The paper presents a comparison of methods of the back EMFs estimation for the permanent magnets synchronous motor in a case of position estimation at the low speed range. These methods are based on the following structures for back EMF estimation: observer for model of the electrical part of the motor, the observer for the modified correction function and estimation based on the simplified model. Obtained in this way the instantaneous values of the back EMFs, depending on the method of obtaining them, are characterized by different quality and accuracy of the estimated shaft position.

Keywords

electric potential; permanent magnet motors; shafts; synchronous motor drives; back EMF estimation method; low speed PMSM drive; permanent magnet synchronous motor; position estimation; shaft position estimation accuracy; Accuracy; Current measurement; Mathematical model; Observers; Position measurement; Shafts; PMSM; observer; sensorless control;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics - Mechatronika (ME), 2014 16th International Conference on

Conference_Location

Brno

Print_ISBN

978-80-214-4817-9

Type

conf

DOI

10.1109/MECHATRONIKA.2014.7018232

Filename

7018232