Robust Non-Linear Direct Torque and Flux Control of Adjustable Speed Sensorless PMSM Drive Based on SVM Using a PI Predictive Controller

Journal of Engineering Science and Technology Review. 2010;3(1):168-175


Journal Homepage

Journal Title: Journal of Engineering Science and Technology Review

ISSN: 1791-2377 (Online)

Publisher: Eastern Macedonia and Thrace Institute of Technology

Society/Institution: Eastern Macedonia and Thrace Institute of Technology

LCC Subject Category: Technology: Engineering (General). Civil engineering (General) | Technology: Technology (General)

Country of publisher: Greece

Language of fulltext: English

Full-text formats available: PDF



F. Naceri
B. Zegueb
S. Belkacem


Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 24 weeks


Abstract | Full Text

This paper presents a new sensorless direct torque control method for voltage inverter – fed PMSM. The control methodis used a modified Direct Torque Control scheme with constant inverter switching frequency using Space Vector Modulation(DTC-SVM). The variation of stator and rotor resistance due to changes in temperature or frequency deteriorates theperformance of DTC-SVM controller by introducing errors in the estimated flux linkage and the electromagnetic torque.As a result, this approach will not be suitable for high power drives such as those used in tractions, as they require goodtorque control performance at considerably lower frequency. A novel stator resistance estimator is proposed. The estimationmethod is implemented using the Extended Kalman Filter. Finally extensive simulation results are presented to validate theproposed technique. The system is tested at different speeds and a very satisfactory performance has been achieved.