DocumentCode :
3118828
Title :
Variable structure direct torque control of encoderless synchronous reluctance motor drives with maximized efficiency
Author :
Zarchi, H. Abootorabi ; Soltani, J. ; Markadeh, Gh R Arab ; Fazeli, M. ; Sichani, A. Kh
Author_Institution :
Fac. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran
fYear :
2010
fDate :
4-7 July 2010
Firstpage :
1529
Lastpage :
1535
Abstract :
In this paper, a flexible DTC based on variable structure approach and space vector modulation is presented for encoderless Synchronous Reluctance Motor (SynRM) Drives. According to this method, a sliding mode-plus-PI controller is designed for torque and flux control in stator flux reference frame, respectively. The proposed controller is able to reduce the torque, flux, current and speed pulsations during steady-state behavior while the fast response and robustness merits of the classic DTC are preserved. In addition, an on-line adaptive loss minimization controller (ALMC) for SynRM drives is introduced. The ALMC provides a novel pattern of change in stator flux magnitude to achieve a minimum motor input power at any operating condition. The operating of the ALMC results in a smooth and fast loss minimization. Very low speed estimation (5 r/min) is satisfied by the elimination of the voltage sensors´ dc offset. The simulation and experimental results obtained verify that the encoderless efficiency-optimized VS-DTC proposed for SynRM drives presents a good performance with minimized number of dependent parameters.
Keywords :
PI control; reluctance motor drives; stators; torque control; variable structure systems; encoderless synchronous reluctance motor drives; flux control; maximized efficiency; on-line adaptive loss minimization controller; sliding mode-plus-PI controller; space vector modulation; stator flux reference frame; variable structure direct torque control; Inverters; Minimization; Stators; Switches; Torque; Voltage control; Direct Torque Control; Efficiency-Optimized Strategy; Encoderless; Sliding Mode; Synchronous Reluctance Motor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics (ISIE), 2010 IEEE International Symposium on
Conference_Location :
Bari
Print_ISBN :
978-1-4244-6390-9
Type :
conf
DOI :
10.1109/ISIE.2010.5637461
Filename :
5637461
Link To Document :
بازگشت