The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 27-640
Full Name: Aleksandar Nikolic
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: Koste Glavinica 8a, 11000 Belgrade, Serbia
Country: YUGOSLAVIA
Tel: (0)11-3952029
Tel prefix: +381
Fax: (0)11-3690823
E-mail address: anikolic@ieent.org
Other E-mails: nba@ieee.org
Title of the Paper: Different Methods for Direct Torque Control of Induction Motor Fed From Current Source Inverter
Authors as they appear in the Paper: Aleksandar Nikolic, Borislav Jeftenic
Email addresses of all the authors: anikolic@ieent.org, jeftenic@etf.bg.ac.yu
Number of paper pages: 11
Abstract: Two different methods for direct torque control (DTC) of induction motor fed from current source inverter (CSI) is analyzed in the paper. The first one is derived from well-known DTC strategy developed for voltage inverter drives. This type of control basically uses hysteresis type controllers for torque and flux. In CSI drive there is only one controller used for torque control loop. The problems that arises in such a drive is significant torque pulsations due to the nature of CSI and occasional speed drops because of variable switching frequency. The other DTC method, proposed in the paper, is based on constant switching frequency with modification of the inverter optimal switching table. Further improvements are reduced number of sensors since all measurements are performed in DC link only and in flux estimator. Both simulation and experimental results shows that this algorithm has better performance without problems that exist in the same drive with torque hyst!
eresis comparator. Finally, proposed method is simpler for implementation in a real drive without rotational transformation and parameter dependences that exist in vector control of the same drive.
Keywords: DTC, hysteresis comparator, constant switching, CSI, induction motor
EXTENSION of the file: .pdf
Special (Invited) Session: Hysteresis Control and Constant-Switching Strategy in Direct Torque Control Drive – A Comparative Analysis
Organizer of the Session: ID591-696
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