Performance analysis of the DTC using a closed loop stator flux observer for induction motor in the low speed range

Author

Choi, Youn-Ok ; Lee, Kang-Yeon ; Seo, Kang-Sung ; Kim, Gi-Bum ; Jung, Byung-Ho ; Cho, Geum-Bae ; Baek, Hyung-Lae ; Jeong, Sam-Yong

Author_Institution

Dept. of Electr. Eng., Chosun Univ., Gwang-Ju, South Korea

Volume

1

fYear

2001

fDate

2001

Firstpage

89

Abstract

Direct torque control (DTC) of an AC motor has the fast torque and flux dynamic responses even though it has very simple scheme to implement. However, DTC do not show good performance at low speed range with conventional open loop stator flux observer when stator resistance varied. Therefore, authors propose a new nonlinear stator flux observer in order to estimate the stator flux of induction motor at low speed and show its simulation results

Keywords

closed loop systems; induction motors; machine control; magnetic flux; observers; parameter estimation; stators; torque control; AC motor; closed loop stator flux observer; direct torque control; extended Luenberger observer; fast torque response; flux dynamic response; induction motor; low speed range; nonlinear stator flux observer; open loop stator flux observer; performance analysis; stator flux observer; stator resistance; Induction generators; Induction motor drives; Induction motors; Observers; Open loop systems; Performance analysis; Rotors; Stators; Torque control; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.970616

Filename

970616