Title :
Study on MRAS speed identification based on high-frequency signal injection
Author :
Ma, Xiaona ; Li, Yingshun ; Jiang, Yuequan
Author_Institution :
Sch. of Eng., Shenyang Univ. of Technol., Liaoyang
Abstract :
This paper presents a novel method of speed identification of induction motor speed sensorless DTC (direct torque control) based on MRAS (model reference adaptive system). It is difficult to identify speed at low speed and standstill area for traditional MRAS method due to traditional reference model of primitive motor model. The new MRAS speed identification method gains reference model from high frequency signal injection method and takes current model as regulative model at low and standstill area, and designs speed adaptive law according to popovpsilas super-stability theory. The simulation results prove validity of the scheme.
Keywords :
induction motors; machine control; model reference adaptive control systems; stability; torque control; MRAS speed identification; high-frequency signal injection; induction motor speed sensorless direct torque control; model reference adaptive system; primitive motor model; super-stability theory; Adaptive systems; Automation; Elevators; High level synthesis; Induction motors; Intelligent control; Paper technology; Programmable control; Signal processing; Torque control; High-frequency signal injection method; Induction motor; Model Reference Adaptive System(MRAS); Speed sensorless;
Conference_Titel :
Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4244-2113-8
Electronic_ISBN :
978-1-4244-2114-5
DOI :
10.1109/WCICA.2008.4594477
