Title :
On speed sensorless vector control system for induction motor based on estimating speed by torque current differential
Author :
Xu, Liu ; Yi, Ruan ; Chaoyi, Zhang ; Huanqing, Sheng ; Yong, Yang
Author_Institution :
Dept. of Autom., Shanghai Univ., Shanghai
Abstract :
In this paper, a new method of speed estimation for sensorless vector control of induction motor is introduced. This method is based on dynamic mathematical model of induction motor and torque current differential plays an important role in this method. The estimated speed can be used as feedback signal for speed closed loop and to make up of speed sensorless vector control system for induction motor with current closed loop. A simulation model is established in MATLAB. The obtained results are approved to be correct and effective. The system that uses this method has been developed and encouraging experiment results have also been obtained.
Keywords :
closed loop systems; control system analysis computing; feedback; induction motors; machine vector control; mathematics computing; torque; velocity control; current closed loop; feedback signal; induction motor; speed closed loop; speed estimation; speed sensorless vector control system; torque current differential; Control systems; Equations; Feedback loop; Inductance; Induction motors; Machine vector control; Mathematical model; Sensorless control; Stators; Torque control; Induction motor; Speed estimation; Speed sensorless; Torque current differential; Vector control;
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
DOI :
10.1109/CHICC.2008.4605206
