Syllabus

Low cost induction motor drives 6 Hours
Steady-state analysis of three phase induction motor operation from unbalanced and nonsinusoidal supply, speed control methods of cage rotor motors, speed control of wound rotor induction motors: static Scherbius drive and Kramer drive, variable frequency operation from voltage sources and current sources, closed loop control.

High performance induction motor drives 15 Hours
Vector control of induction machine: Reference frame theory and transformations, induction motor model in stationary and synchronously rotating d-q reference frames, principle of vector control, direct and indirect vector control, rotor flux and stator flux orientation control, implementation of direct and indirect vector control schemes, effects of machine parameter variation on the performance of vector controlled drives, methods of flux estimation, current controlled PWM VSI with hysteresis band, synchronous frame P-I current control, stator flux orientation control, speed sensorless vector control: speed estimation through slip calculation, direct synthesis from state equations, speed adaptive flux observer, extended Kalman filter, model reference adaptive system.
Direct Torque Control of induction motor, DTC with space vector PWM, dwell time calculation.

Synchronous motor drives 15 Hours
Synchronous motor drive: Review of cylindrical rotor and salient pole synchronous machine: operating principles, characteristic equations, phasor diagram, true and self-synchronous control, Brushless DC motor, load commutated inverter fed synchronous motor, constant V/f control, scalar control with unity power factor, dynamic d-q axis model.
Vector control of synchronous motor: principle, phasor diagram and scheme of control.
Permanent magnet synchronous motor: surface permanent magnet machine and interior permanent magnet motors, brushless dc drive.

Special machine drives 3 Hours
Synchronous reluctance motor, switched reluctance machine, closed speed control of SRM drive.

To understand and apply scalar and vector control techniques on induction motor drives

To apply estimation techniques and develop sensorless vector controlled drives

To apply direct torque control technique on induction motor drives

To develop unity power factor drives and fast response vector controlled synchronous motor drives

CO1: At the end of the course, students will be able to create low cost, static, scalar controlled induction motor drives

CO2: At the end of the course, students will be able to develop vector controlled induction motor drives

CO3: At the end of the course, students will be able to analyze sensorless vector control of induction motor drives and estimate speed

CO4: At the end of the course, students will be able to create direct torque controlled induction motor drive

CO5: At the end of the course, students will be able to develop unity power factor drives and vector controlled synchronous motor drives

CO6: At the end of the course, students will be able to understand PMS motors, synchronous reluctance motor and SRM drives

B. K. Bose, Modern Power Electronics and AC Drives, Pearson Education Inc., Singapore , 2002

G. K. Dubey, Power Semiconductor Controlled Drives, Prentice-Hall International, New Jersey , 1989

P. Vas, Sensorless Vector and Direct Torque Control, Oxford University Press, Oxford , 1999

W. Leonhard, Control of Electrical drives, Springer-Verlag, Berlin , 1985

P. L. Jansen, R. D. Lorenz, “A physical insightful approach to the design and accuracy assessment of flux observers for field oriented induction machine drives,” IEEE Trans. Industry Applications, Vol. 30, Issue 1, 1994, pp. 101-110

K. Rajashekara, A. Kawamura, and K. Matsuse, “Sensorless Control of AC Motor Drives: Speed and Position Sensorless Operation,” IEEE press, Piscataway, 1996