TY - JOUR
T1 - Reduced-order flux observers with stator-resistance adaptation for speed-sensorless induction motor drives
AU - Hinkkanen, Marko
AU - Harnefors, Lennart
AU - Luomi, Jorma
PY - 2010/5/6
Y1 - 2010/5/6
N2 - This paper deals with reduced-order flux observers with stator-resistance adaptation for speed-sensorless induction motor (IM) drives. A general analytical solution for the stabilizing observer gain is given. The gain has two free positive parameters (which depend on the operating point), whose selection significantly affects the damping, convergence rate, robustness, and other properties of the observer. The general stability conditions for the stator-resistance adaptation are derived. An observer design is proposed that yields a robust and well-damped system and requires a minimal amount of tuning work. The proposed observer design is experimentally tested using a 45-kW IM drive; stable operation at very low speeds under different loading conditions is demonstrated.
AB - This paper deals with reduced-order flux observers with stator-resistance adaptation for speed-sensorless induction motor (IM) drives. A general analytical solution for the stabilizing observer gain is given. The gain has two free positive parameters (which depend on the operating point), whose selection significantly affects the damping, convergence rate, robustness, and other properties of the observer. The general stability conditions for the stator-resistance adaptation are derived. An observer design is proposed that yields a robust and well-damped system and requires a minimal amount of tuning work. The proposed observer design is experimentally tested using a 45-kW IM drive; stable operation at very low speeds under different loading conditions is demonstrated.
KW - flux observer
KW - induction motor drives
KW - speed sensorless
KW - stability conditions
KW - stator-resistance estimation
KW - flux observer
KW - induction motor drives
KW - speed sensorless
KW - stability conditions
KW - stator-resistance estimation
KW - flux observer
KW - induction motor drives
KW - speed sensorless
KW - stability conditions
KW - stator-resistance estimation
U2 - 10.1109/TPEL.2009.2039650
DO - 10.1109/TPEL.2009.2039650
M3 - Article
VL - 25
SP - 1173
EP - 1183
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 5
ER -