Kovbasa S. Robust Vector Control of Induction Motors under rotor resistor variations

The object of the investigation: electromechanical energy conversion in vector-controlled induction motor drive. The purpose of the investigation: development, theoretical and practical investigation IM control algorithms with improved robustness properties with respect to rotor resistance variations. Methods of the investigation: second Lyapunov method, feedback control, feedback linearization, mathematical and physical modeling. Theoretical and practical results and innovations: first time theoretical proof of separation principle for vector control algorithm synthesis with asymptotic exponentially stable flux observers is presented; new IM vector control algorithms with improved robustness properties with respect to rotor resistance variations are developed; vector controlled induction motor drive prototype is developed. A subject and degree of the implementation: results are implemented in NTUU "KPI" and used during universal controller development on Zaporozhskiy electroapparatniy plant. The efficiency of the implementation: performances of mechanical coordinate regulation and energetic efficiency improvement. The sphere of application - electromechanical systems.