Title :
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
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;
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
DOI :
10.1109/ICEMS.2001.970616
