Title :
Vector approximation with the secondary parameters compensation of IM
Author :
Ide, Kozo ; Bai, Zhi-Guo ; Yang, Zi-Jiang ; Tsuji, Teruo
Author_Institution :
Dept. of Electr. Eng., Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
The concept of the vector approximation method for a CSI-fed induction motor (IM) consists of the vector control and the shaping of a stator current wave. The vector approximation means that a desirable space current vector is approximated by two realizable current vectors which have only six directions, and by DC link current control. The main purpose of the vector approximation method is not only to decrease torque ripple but also to control instantaneous torque, which is different from that of the general PWM method. In this paper, a parameter adaptation system containing a magnetic saturation table and a model reference adaptive system (MRAS) is newly added to the system, which may bring more precise vector approximation and torque control to induction motor drive systems. The simulation and experimental results are shown in this paper
Keywords :
compensation; electric current control; induction motors; invertors; machine control; machine theory; model reference adaptive control systems; parameter estimation; power convertors; stators; torque control; DC link current control; induction motor; instantaneous torque control; magnetic saturation table; model reference adaptive system; parameter adaptation system; secondary parameters compensation; space current vector; stator current wave shaping; torque ripple decrease; vector approximation method; vector control; Adaptive systems; Approximation methods; Current control; Induction motors; Machine vector control; Programmable control; Pulse width modulation; Saturation magnetization; Stators; Torque control;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349722
