Title :
A three-level speed sensor-less DTC drive of induction motor based on a full-order flux observer
Author :
Tan, Zhuohui ; Li, Yongdong ; Zeng, Yi
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Three-level neutral-point-clamped (NPC) inverters have been widely used in medium-voltage applications. In this paper, a three-level DTC (direct torque control) drive of an induction motor is presented. In order to keep the neutral-point-voltage balanced and simplify the complexity of vector selection, a virtual-vector method is applied. In addition, an adaptive full-order flux observer method is implemented and a high performance speed sensor-less DTC drive can be achieved. The validity of presented control strategies is verified by simulation and experimental results.
Keywords :
adaptive control; induction motor drives; invertors; machine control; magnetic flux; observers; torque control; 2.2 kW; adaptive full-order flux observer; control strategies; direct torque control; induction motor drive; three-level neutral-point-clamped inverters; three-level speed sensor-less DTC drive; virtual-vector method; Couplings; Indium phosphide; Inductance; Induction motors; Inverters; Stators; Support vector machines; Table lookup; Torque control; Voltage;
Conference_Titel :
Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on
Print_ISBN :
0-7803-7459-2
DOI :
10.1109/ICPST.2002.1047561
