Energy optimized sensorless sliding mode control of IM drive taking core losses into account

J Soltani, M Hajian, S Hosein Nia, G Arab

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution


This paper presents a novel sensorless discrete sliding-mode (SM) stator flux and torque controller for three-phase Induction motor drive which is supplied by a three level SVM voltage source inverter (VSI). The stator flux is estimated by a sliding-mode observer and is employed in the rotor speed and stator resistance estimation. In the proposed method the motor iron losses is modeled by a rotor speed dependent shunt resistance in IM two axis equivalent circuits. The system efficiency is optimized by adjusting the magnitude of stator flux reference value for a given motor load and motor speed. To do so, two different methods named as Model Based Approach (MBA) and On-line Search Approach (OSA) are adopted. Finally, some simulation results are presented to show the capability and validity of the proposed control scheme.
Original languageEnglish
Title of host publicationIEEE International Conference on Industrial Technology, 2008. ICIT 2008.
PublisherIEEE Explore
Number of pages6
ISBN (Electronic)978-1-4244-1706-3
ISBN (Print)978-1-4244-1705-6
Publication statusPublished - 21 Apr 2008
EventIEEE ICIT 2008 - Chengdu, China, United Kingdom
Duration: 21 Apr 200824 Apr 2008


ConferenceIEEE ICIT 2008
Country/TerritoryUnited Kingdom
CityChengdu, China


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