Bozhko, SerhiyKovbasa, SerhiiNikonenko, YevhenPeresada, Sergei2020-03-312020-03-312018-11Bozhko S., Kovbasa S., Nikonenko Y. and Peresada S., "Direct vector control of induction motors based on rotor resistance-invariant rotor flux observer," 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), Nottingham, 2018, pp. 1-6.https://ela.kpi.ua/handle/123456789/32586This is a post-peer-review, pre-copyedit version of an article published in Proceedings of 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). The final authenticated version is available online at: https://ieeexplore.ieee.org/document/8607640A novel speed-flux tracking controller for induction motors has been developed and experimentally verified. Direct rotor flux field oriented controller is designed for current-fed induction motor model on the base of full order hybrid continuous time-sliding mode flux observer. Controller guarantees local asymptotic speed-flux tracking and asymptotic direct field-orientation under condition of unknown constant load torque. The flux subsystem is invariant with respect to limited rotor resistance variations due to special structure of the flux observer. The efficiency of the proposed solution is confirmed by the results of experimental studies, which demonstrate the improved robustness properties in all motor operating conditions including nearby zero speeds.eninduction motorfield-oriented controlsliding modeflux observerArticleIEEE6 p.https://doi.org/10.1109/ESARS-ITEC.2018.8607640