Next Article in Journal
Study on the Propagation Laws of Hydrofractures Meeting a Faulted Structure in the Coal Seam
Next Article in Special Issue
A Self-Tuning Filter-Based Adaptive Linear Neuron Approach for Operation of Three-Level Inverter-Based Shunt Active Power Filters under Non-Ideal Source Voltage Conditions
Previous Article in Journal
Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps
Previous Article in Special Issue
Control Strategy of Single-Phase Three Level Neutral Point Clamped Cascaded Rectifier
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Energies 2017, 10(5), 663; doi:10.3390/en10050663

An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives

Faculty of Electronic Engineering, University of Niš, Niš 18000, Serbia
Author to whom correspondence should be addressed.
Academic Editor: Jose Fernando Alves da Silva
Received: 12 March 2017 / Revised: 3 May 2017 / Accepted: 4 May 2017 / Published: 10 May 2017
(This article belongs to the Special Issue Power Electronics in Power Quality)
View Full-Text   |   Download PDF [6027 KB, uploaded 10 May 2017]   |  


This paper analyses symmetrical and unsymmetrical voltage sag effects on the torque and speed deviation in direct torque controlled (DTC) induction motors (IMs) for adjustable speed drives (ASDs). The capability of an ASD for continuous normal operation in case of short supply disturbances is essential for high performance drives. In this paper, an updated scheme is proposed for boosting ASD performances during supply disturbances with voltage reduction. Flux weakening is an effective method to overcome the torque-decreasing problem in case of DC-link voltage diminishing. It is also shown that speed reduction is an efficient procedure to obtain the voltage sag insensitivity of an ASD, which is appropriate for the existing industrial applications. Extensive laboratory testing has been conducted to verify the performances and effectiveness of the proposed control algorithm. The suggested method requires only a modification of converter control software or operating speed change without any additional hardware components. Extended tests under various voltage sags events were carried out on a 1.5 kW laboratory drive, and the obtained results have been compared with an industrial DTC drive. View Full-Text
Keywords: voltage sag; power quality; direct torque control; induction motor; adjustable speed drives voltage sag; power quality; direct torque control; induction motor; adjustable speed drives

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Petronijević, M.; Mitrović, N.; Kostić, V.; Banković, B. An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives. Energies 2017, 10, 663.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top