ABSTRACT
Sensorless control of AC motor drives is a huge topic, which has been faced up to by plenty of researchers. Hitachi drive model J300 is a sensorless vector-controlled induction machine (IM) drive, adopting fuzzy logic control for the calculation of the optimal acceleration and deceleration times as well as for the control of the stator currents. T. Orlowska-Kowalska et al. explore the goodness of an adaptive sliding-mode neurofuzzy speed controller devised for a two-mass sensorless vector-controlled IM drive. The ordinary least squares-model reference adaptive system observer has been experimentally tested on both a field-oriented control (FOC) and a direct torque control (DTC) IM drive. The total least squares-EXIN full-order Luenberger adaptive observer has been tested experimentally on an FOC IM drive. The earlier-described neural network-based speed observers have been tested on two kinds of control schemes, FOC and DTC.
