Robust measurement disturbance observer design for AC motor drive systems with current measurement errors

Author

Cho, Kyung-Rae ; Seok, Jul-Ki

Author_Institution

Dept. of Electr. Eng., YeungNam Univ., Kyungsan

fYear

2007

Firstpage

1202

Lastpage

1207

Abstract

In the vector control, current measurement errors deteriorate the motor drive system since the vector control is based on the current control. In this paper, in order to obtain precise torque control and eliminate the speed ripple, an online measurement disturbance observer (MDO) is proposed. Based on parameter sensitivity analysis, a practical method of designing robust MDO gains is proposed. The proposed method is applied to a commercial 1.1-kW permanent magnet synchronous motor to show its effectiveness and applicability.

Keywords

AC motor drives; control system synthesis; electric current control; machine vector control; measurement errors; observers; permanent magnet motors; robust control; sensitivity analysis; synchronous motors; torque control; AC motor drive system; current control; current measurement errors; parameter sensitivity analysis; permanent magnet synchronous motor; power 1.1 kW; robust measurement disturbance observer design; torque control; vector control; AC motors; Current control; Current measurement; Error correction; Machine vector control; Motor drives; Robustness; Torque control; Torque measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, 2007. ICPE '07. 7th Internatonal Conference on

Conference_Location

Daegu

Print_ISBN

978-1-4244-1871-8

Electronic_ISBN

978-1-4244-1872-5

Type

conf

DOI

10.1109/ICPE.2007.4692568

Filename

4692568