The paper was accepted at IEEE International Symposium of Industrial Electronics 2008, Cambridge,UK, The paper describes an advanced rotor speed estimation technique using model adaptive reference control system.

1. AN OBSERVER BASED ON-LINE ROTOR SPEED ESTIMATION TECHNIQUE FOR A VECTOR CONTROLLED INDUCTION MACHINE DEBASHIS CHATTERJEE, AGNIPROTIM SEN & TRIDIBESH NAG By

7. What is MRAC (Model Reference Adaptive Control ? The idea behind Model Reference Adaptive Control is to create a closed loop controller with parameters that can be updated to change the response of the system to match a desired model.

9. Block Diagram of MRAC Technique

10. Algorithm of the Proposed Model NO YES NO YES

11. Literature Review part I Principal Equations: The rotor speed is given by, , Where, Is the Electromagnetic torque developed

13. Validation of the Proposed Model HP 2 R s 11.2 Rated Speed 1440 R r 8.45 Phase 3 L ls & L lr 0.0886 Connection Delta L m 0.0890

15. Thank You