Syllabus

Module 1 Induction motor drives 17 Hours
Induction motor drive: Three phase induction motor operation from nonsinusoidal supply, 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, 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, speed sensorless vector control: speed estimation through slip calculation, direct synthesis from state equations, speed adaptive flux observer, model reference adaptive system.
Direct Torque Control of induction motor, DTC with space vector PWM, dwell time calculation.
Module 2 Synchronous motor drives 14 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.
Module 3 Special machine drives 3 Hours
Synchronous reluctance motor, switched reluctance machine, speed control scheme for SRM drive.

To understand 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: Understanding of reference frame transformations and ac machine modelling
CO2: Understanding of vector controlled and direct torque controlled induction motor drive
CO3: Competency in estimation and sensorless vector control of induction motor drives
CO4: Ability to apply constant V/f control on synchronous motor drive
CO5: Understanding of unity power factor drives and vector controlled synchronous motor drives
CO6: Understand the use PMSM, IPMSM, SPMSM, synchronous reluctance motor and SRM drives

B. K. Bose, Modern Power Electronics and A.C. Drives, PHILearning Pvt. Ltd. , 2002

R. Krishnan, Electric Motor Drives: Modeling, Analysis, and Control, PHI Learning Pvt. Ltd. , 2001

N. K. De and P. K. Sen, Fundamentals of Electrical Drives, PHI Learning Pvt. Ltd. , 1999

G. K. Dubey, Fundamentals of Electrical Drives, Narosa Publishing House , 2002