V. Lovati et al., A MICROCONTROLLER-BASED SENSORLESS STATOR FLUX-ORIENTED ASYNCHRONOUS MOTOR DRIVE FOR TRACTION APPLICATIONS, IEEE transactions on power electronics, 13(4), 1998, pp. 777-785
A sensorless stator flux-oriented asynchronous motor drive has been re
alized by using a low-cost single-chip microcontroller. A motor state
observer has been implemented, which showed excellent performances, pa
rticularly at low-speed operation. Two different experimental realizat
ions have been developed, with rated powers equal to about 1.5 and 30
kW, respectively, and good results have been obtained in both cases, T
he theoretical approach, main design choices, and most significant exp
erimental results are presented.