A Novel Modified DTC-SVM Method with Better Overload-capability for Permanent Magnet Synchronous Motor Servo Drives

Authors

  • Tibor Vajsz
    Affiliation
    Budapest University of Technology and Economics
  • László Számel
    Affiliation
    Budapest University of Technology and Economics
  • György Rácz
    Affiliation
    Budapest University of Technology and Economics
https://doi.org/10.3311/PPee.10428

Abstract

Direct torque control with space vector modulation (DTC-SVM) is one of the most promising alternatives of field-oriented control in the case of permanent magnet synchronous motor drives. This method controls the electromagnetic torque of the motor with excellent dynamics which makes it an attractive choice in the case of servo drives. In this article DTC-SVM is investigated with Matlab-Simulink simulation and it is proven that DTC-SVM has severe instability-issues during overloading and its overload-capabilities are heavily dependent on the speed. Therefore, a novel modified DTC-SVM method is proposed which is stable during overloading and its overload-capabilities are practically independent of the speed. Also, the overload-capability of the new method is superior to that of classical DTC-SVM, while the two methods are practically identical from the point of view of the torque-control dynamics and the torque-ripple generated.

Keywords:

permanent magnet synchronous motor, direct torque control, space vector modulation, servo drive, frequency converter, electric drive

Citation data from Crossref and Scopus

Published Online

2017-06-08

How to Cite

Vajsz, T., Számel, L., Rácz, G. “A Novel Modified DTC-SVM Method with Better Overload-capability for Permanent Magnet Synchronous Motor Servo Drives”, Periodica Polytechnica Electrical Engineering and Computer Science, 61(3), pp. 253–263, 2017. https://doi.org/10.3311/PPee.10428

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Section

Articles