Course Objectives:
- To impart knowledge about the power semiconductor devices, the operation of various power converters and its applications.
Course Outcomes:
At the end of the course students should be able to:
CO1: Explain the operation of modern power semiconductor devices and its characteristics.
CO2: Analyse the working of controlled rectifiers.
CO3: Explain the working of AC voltage controllers, inverters and PWM techniques.
CO4: Compare the performance of different dc-dc converters.
CO5: Describe basic drive schemes for ac and dc motors.
Course Prerequisites:
- Basics of Electrical and Electronics Engineering
Text Books (T)
T1. Muhammad H. Rashid, Power Electronics Circuits, Devices and Applications, Pearson Education
T2. Daniel W. Hart, Power Electronics, Tata McGraw-Hill Education .
T3. P.S. Bimbhra, Power Electronics, Khanna Publishers, New Delhi
Reference Books (R)
R1: Mohan N., T. M. Undeland and W. P. Robbins., Power Electronics, Converters, Applications & Design, Wiley-India
R2: Fundamentals of Power Electronics, Erickson, Robert W., and Maksimovic, Dragan.
R3: Krein P. T., Elements of Power Electronics, Oxford University Press, 1998.
R4: L. Umanand, Power Electronics – Essentials & Applications, Wiley-India
R5: Singh M. D. and K. B. Khanchandani, Power Electronics, Tata McGraw Hill, New Delhi, 2008.
R6:Joseph Vithayathil, Power Electronics: Principles and Applications, McGraw-Hill College; International edition ,1995
R7: Application notes on SiC and GaN, www.infineon.com. [online]
R8: Evolution of wide Band-gap Semi-conductors for power devices expanding field of applications. Technical review, Vol 4, Toshiba Corporation, 2018
R9: Milligan, J. W., Sheppard, S., Pribble, W., Wu, Y.-F., Muller, G., & Palmour, J. W.(2007). SiC and GaN Wide Bandgap Device Technology Overview, 2007 IEEE Radar Conference. doi:10.1109/radar.2007.374395.
R10.:Vedam Subramaniam “Electric drives (concepts and applications)”, Tata McGraw-Hill, 2001.
R11: G. K. Dubey, Fundamentals of Electric Drives, Narosa publishers, second edition,2010.
Curriculum
- 5 Sections
- 15 Lessons
- 12 Weeks
- Module 1Introduction to Power Electronics-Scope and applications-power electronics vs signal electronics. Structure and principle of operation of power devices- Power diode, Power MOSFET & IGBT – switching characteristics - comparison. Basic principles of wideband gap devices-SiC, GaN. SCR- Structure, Static characteristics & Switching (turn-on & turn-off) characteristics - di/dt & dv/dt protection – Turn-on methods of SCR - Two transistor analogy. Gate triggering circuits – Requirements of isolation and synchronization in gate drive circuits- Opto and pulse transformer based isolation.3
- Module 2Controlled Rectifiers (Single Phase) – Half-wave controlled rectifier with R load– Fully controlled and half controlled bridge rectifier with R, RL and RLE loads (continuous & discontinuous conduction) – Output voltage equation- related simple problems. Controlled Rectifiers (3-Phase) - 3-phase half-wave controlled rectifier with R load – Fully controlled & half-controlled bridge converter with RLE load (continuous conduction, ripple free) – Output voltage equation-Waveforms for various triggering angles.2
- Module 3AC voltage controllers (ACVC) – 1-phase full-wave ACVC with R, & RL loads – Waveforms – RMS output voltage, Input power factor with R load . Inverters – Voltage Source Inverters– 1-phase half-bridge & full bridge inverter with R and RL loads – THD in output voltage – 3-phase bridge inverter with R load – 120° and 180° conduction modes– Current Source Inverters-1-phase capacitor commutated CSI.Voltage control in 1-phase inverters – Pulse width modulation – Single pulse width, Multiple pulse width and Sine-triangle PWM (unipolar & bipolar modulation) – Modulation Index - Frequency modulation ratio.3
- Module 4DC-DC converters – Step down and Step up choppers – Single-quadrant, Two-quadrant and Four quadrant chopper – Pulse width modulation & current limit control in dc-dc converters. Switching regulators – Buck, Boost & Buck-boost –Operation with continuous conduction mode – Waveforms – Design of Power circuits (switch selection, filter inductance and capacitance).2
- Module 5Electric Drive: Introduction to electric drives – Block diagram – advantages of electric drives- types of load – classification of load torque. DC Drives: Single phase semi converter and single phase fully controlled converter drives. Dual Converters for Speed control of DC motor-1-phase and 3-phase configurations; Simultaneous and Non-simultaneous operation. Chopper controlled DC drives- Single quadrant chopper drives- Regenerative braking control- Two quadrant chopper drives- Four quadrant chopper drives. AC Drives: Three phase induction motor speed control. Stator voltage control – stator frequency control - Stator voltage and frequency control (v/f).5
