DocumentCode :
230463
Title :
Stable sensorless V/f and cosφ =1 control for permanent magnet synchronous motor drives
Author :
Kai Yang ; Xingxing Yang ; Hongqin Xie ; Yang Liu ; Yingli Zhang ; Xubiao Wei
Author_Institution :
State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
fYear :
2014
fDate :
22-25 Oct. 2014
Firstpage :
3564
Lastpage :
3568
Abstract :
This paper proposes a novel control structure for scalar sensorless V/f controlled permanent magnetic synchronous motor (PMSM) drives with two feedback corrections in the new created dvqv reference frame: i) a speed stabilizing correction using input active power variation to moderate the stator applied frequency to ensure the stable operation, ii) a voltage amplitude correction employing the PI regulation of qv-axis current, that is the reactive current component, eventually realizes cosφ =1. The addition of PI regulator which also influences the stability of system is explored. Moreover, based on a basic V/f control, the scheme can greatly simplify the calculation and enhance insensitivity to the motor parameters. The proposed solution is simple, non-oscillatory and of good robustness. The simulation and experiments are carried out to prove the performance and validity.
Keywords :
PI control; feedback; permanent magnet motors; sensorless machine control; synchronous motor drives; PI regulation; active power variation; control structure; feedback corrections; permanent magnet synchronous motor drives; reactive current component; scalar sensorless V/f control; speed stabilizing correction; stable sensorless V/f control; voltage amplitude correction; Rotors; Stability analysis; Stators; Steady-state; Torque; Vectors; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
Type :
conf
DOI :
10.1109/ICEMS.2014.7014107
Filename :
7014107
Link To Document :
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