Title :
A sensorless vector control system - saturation in iron analysis
Author :
Vukadinovic, D. ; Smajo, M.
Author_Institution :
Dept. of Power Eng., Fac. of Electr. Eng. & Mech. Eng. & Naval Archit., Split, Croatia
Abstract :
Due to saturation impact in iron and thermal changes of stator and rotor windings induction motor (IM) is especially nonlinear system. This nonlinear system control can be solved by using theory of adaptive control with observer theory application. In this paper is analyzed IM sensorless vector control system based on MRAS (model reference adaptive system). Estimation of rotor flux, rotor speed and stator resistance identification is based on known stator voltages and currents. In this paper has been analyzed saturation of mutual inductance in the low speed region and impact of changes of stator and rotor resistance. Mutual inductance Lm is chosen by method described in reference (Vas, 1999).
Keywords :
electric current control; electric resistance; inductance; machine vector control; model reference adaptive control systems; nonlinear control systems; rotors; stators; adaptive control theory; induction motor; iron analysis saturation; model reference adaptive system; mutual inductance; nonlinear system control; observer theory application; rotor flux; rotor resistance; rotor speed; rotor windings; sensorless vector control system; stator currents; stator resistance identification; stator voltages; thermal changes; Adaptive control; Inductance; Induction motors; Iron; Machine vector control; Nonlinear control systems; Nonlinear systems; Rotors; Sensorless control; Stator windings;
Conference_Titel :
Electrotechnical Conference, 2004. MELECON 2004. Proceedings of the 12th IEEE Mediterranean
Print_ISBN :
0-7803-8271-4
DOI :
10.1109/MELCON.2004.1346874
