Flux estimation by asymmetric carrier injection for sensorless direct torque control of PMSM

Author

Ghazimoghadam, M.A. ; Tahami, F.

Author_Institution

Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran

fYear

2012

fDate

15-16 Feb. 2012

Firstpage

44

Lastpage

50

Abstract

The combination of direct torque control and permanent magnet synchronous motors (PMSMs) provides a highly dynamic drive. In this paper direct torque control method of PMSM is merged with a sensorless control algorithm and a robust flux observer is proposed which results in a high performance highly reliable drive. First a high frequency signal injection method within DTC algorithm is introduced to estimate the rotor position of PMSM. Then the method is modified in order to estimate stator dynamic inductances. The stator inductances are then used in a current model flux observer.

Keywords

machine control; permanent magnet motors; synchronous motors; torque control; PMSM; asymmetric carrier injection; flux estimation; permanent magnet synchronous motors; robust flux observer; rotor; sensorless direct torque control; stator dynamic inductances; Observers; Robustness; alternating carrier injection; direct torque contro; flux observer; permanent magnet synchronous machine; sensorless control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems Technology (PEDSTC), 2012 3rd

Conference_Location

Tehran

Print_ISBN

978-1-4673-0111-4

Type

conf

DOI

10.1109/PEDSTC.2012.6183374

Filename

6183374