Control of stator torsional vibration in PM brushless AC drives due to non-sinusoidal back-EMF and cogging torque by improved direct torque control

Author

Zhu, Z.Q. ; Leong, J.H. ; Liu, X.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

6

Abstract

This paper presents a comparative study of the stator frame torsional vibration induced in indirect- and direct-torque controlled permanent magnet brushless AC drives with non-sinusoidal back-EMF waveforms. An improved direct torque controller, which accounts for the influences of non-ideal back-EMF and cogging torque, is proposed. Its effectiveness in minimizing low order stator frame torsional vibration is validated and confirmed experimentally.

Keywords

AC motor drives; brushless machines; electric potential; machine control; permanent magnet motors; torque control; vibration control; cogging torque; direct-torque controlled permanent magnet brushless AC drive; improved direct torque control; indirect-torque controlled permanent magnet brushless AC drive; nonsinusoidal back-EMF; stator frame torsional vibration; stator torsional vibration control; Electromagnetics; Forging; Harmonic analysis; Hysteresis; Stators; Torque; Vibrations; brushless AC machine; direct torque control; permanent magnet; torsional vibration;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073445

Filename

6073445