Title :
Robustness margins for indirect field-oriented control of induction motors
Author :
Bazanella, A.S. ; Reginatto, R.
Author_Institution :
Dept. of Electr. Eng., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
fDate :
6/1/2000 12:00:00 AM
Abstract :
The influence of the rotor time constant mismatch on the stability of induction motors under indirect field-oriented control is analyzed. The results of De Wu et al. (1996) are generalized. A Lyapunov function which provides a global stability test and allows us to compute robustness margins is given. Different mechanisms fur the loss of stability are detected by means of bifurcation analysis. Robustness margins and design guidelines are derived from these results
Keywords :
Lyapunov methods; bifurcation; control system synthesis; induction motors; machine vector control; robust control; two-term control; velocity control; Lyapunov function; bifurcation analysis; design guidelines; global stability test; indirect field-oriented control; robustness margins; rotor time constant mismatch; Bifurcation; Guidelines; Induction motors; Lyapunov method; Robust control; Robust stability; Robustness; Rotors; Stability analysis; Testing;
Journal_Title :
Automatic Control, IEEE Transactions on
