Title :
A novel rotor flux estimator for vector-controlled induction motor drives
Author :
Freitas, M.A.A. ; Andrade, D.A. ; de Paula, H. ; Domingos, J.L.
Author_Institution :
Fundacao Educacional de Ituiutaba, Campus Univ., Ituiutaba, Brazil
Abstract :
This work presents a new method for rotor flux estimation in vector controlled induction motors. Only the acquisition of stator currents and rotor speed are required and there is no need for coordinate transformation. It has a simple conception and is therefore attractive for real time implementations in microprocessor-based systems. Algorithms to compensate for the rotor time constant variation as well as magnetic circuit saturation are incorporated giving the overall control system a good degree of independence on these parameters. The estimator was analysed in different conditions of operation and the results were found to be very good.
Keywords :
computerised control; induction motor drives; machine vector control; magnetic circuits; microcomputer applications; rotors; magnetic circuit saturation; microprocessor based systems; operation conditions; real time implementations; rotor flux estimator; rotor speed acquisition; rotor time constant variation; stator current acquisition; vector controlled induction motor drives; Couplings; Induction motor drives; Induction motors; Machine vector control; Magnetic flux; Real time systems; Rotors; Signal processing algorithms; Stators; Temperature sensors;
Conference_Titel :
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE
Print_ISBN :
0-7803-7906-3
DOI :
10.1109/IECON.2003.1279972
