JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Power Electronics, Power Semiconductor Drives

Course Objectives:

• To know the power electronic converters
• To analyze the various control strategies of power converters for drives control
• To understand the advanced control techniques for DC and AC motor drives
• To go through the control strategies for drives using digital signal processors.

Course Outcomes

At the end of this course, students will demonstrate the ability to

• Understand the operation of power electronic converters and their control strategies.
• Understand the vector control strategies for ac motor drives
• Understand the implementation of the control strategies using digital signal processors.

UNIT - I

Power Converters for AC Drives: PWM control of inverter, selected harmonic elimination, space vector modulation, current control of VSI, three level inverter, Different topologies, SVM for 3 level inverter, Diode rectifier with boost chopper, PWM converter as line side rectifier, current fed inverters with self-commutated devices. Control of CSI, H Bridge as a 4-Q drive.

UNIT - II

Induction Motor Drives: Different transformations and reference frame theory, modeling of induction machines, voltage fed inverter control-v/f control, vector control, direct torque and flux control (DTC).

UNIT - III

Synchronous Motor Drives: Modeling of synchronous machines, open loop v/f control, vector control, direct torque control, CSI fed synchronous motor drives.

UNIT - IV

Permanent Magnet Motor Drives: Introduction to various PM motors, BLDC and PMSM drive configuration, comparison, block diagrams, Speed and torque control in BLDC and PMSM. Switched Reluctance Motor Drives: Evolution of switched reluctance motors; various topologies for SRM drives, comparison, closed loop speed and torque control of SRM.

UNIT - V

DSP Based Motion Control: Use of DSPs in motion control, various DSPs available, and realization of some basic blocks in DSP for implementation of DSP based motion control.

TEXT BOOKS:

• 1. B. K. Bose, “Modern Power Electronics and AC Drives”, Pearson Education, Asia, 2003.
• 2. P. C. Krause, O. Wasynczuk and S. D. Sudhoff, “Analysis of Electric Machinery and Drive Systems”, John Wiley & Sons, 2013.

REFERENCE BOOKS:

• 1. H. A. Taliyat and S. G. Campbell, “DSP based Electromechanical Motion Control”, CRC press, 2003.
• 2. R. Krishnan, “Permanent Magnet Synchronous and Brushless DC motor Drives”, CRC Press, 2009.