Design of Sensorless Vector Control System for Induction Motors
Online identification of motor rotor speed by using modified rotor flux orientation angle estimator and model reference adaptive system achieves sensorless vector control of induction motor. The principle verification conducted on self-developed sensorless vector control of induction motor shows that the system has good dynamic & static performance and induction motor achieves significant improvement in speed regulation in the premise of not adding cost of general inverters.
J. L. Gao et al., "Design of Sensorless Vector Control System for Induction Motors", Applied Mechanics and Materials, Vols. 58-60, pp. 2046-2050, 2011