JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Power Electronics, Power Electronic Converters

Course Objectives:

• To comprehend the concepts of different power converters and their applications
• To analyze and design switched mode regulators for various industrial applications.
• To develop resonant power converters with better performance

Course Outcomes

After completion of the course, students will be able to:

• Select an appropriate power semiconductor device and design a power converter for the required application
• Model existing and modified power converters based on real time applications
• Analyze and design power converters and feedback loops.

UNIT - I

NON-ISOLATED D.C. TO D.C. CONVERTERS Analysis of step-down and step-up dc to dc converters with Resistive and Resistive-Inductive loads, Switched mode regulators, Analysis of Buck Regulators, Boost regulators, Buck and boost regulators, Cuk regulators, Condition for continuous inductor current and capacitor voltage, Comparison of regulators, Multi output boost converters, Advantages, Applications, Problems, State space analysis of regulators.

UNIT - II

ISOLATED D.C. TO D.C. CONVERTERS Classification, switched mode dc power supplies, Fly back Converter, Forward converter, Push-pull converter, Half bridge converter, Full bridge converter, Control circuits, Magnetic design considerations, Applications.

UNIT - III

RESONANT PULSE INVERTERS Resonant pulse inverters, Series resonant inverters, Series resonant inverters with unidirectional switches, Series resonant inverters with bidirectional switches, Analysis of half bridge resonant inverter, Evaluation of currents and voltages of a simple resonant inverter, Analysis of half bridge and full bridge resonant inverter with bidirectional switches, Frequency response of Series resonant, Parallel resonant, Series loaded, Parallel loaded, Series and Parallel loaded inverters, Voltage control of resonant inverters, Class-E resonant inverter, Class-E resonant rectifier, Evaluation of values of ‘C’ and ‘L’ for Class-E inverter and Class-E rectifier, Numerical problems.

UNIT - IV

ZCS & ZVS RESONANT CONVERTERS Resonant converters, zero current switching resonant converters, L-type and M-type ZCS resonant converter, zero voltage switching resonant converters, Comparison between ZCS and ZVS resonant converters, Two quadrant ZVS resonant converters, Resonant dc-link inverters, Evaluation of ‘L’ and ‘C’ for a zero current switching inverter, Numerical problems.

UNIT - V

POWER CONDITIONERS Power line disturbances, Power conditioners, Uninterruptible Power supplies, Applications ADVANCED CONVERTERS Principle of operation of SEPIC converter, Matrix Converter, Luo Converter, Interleaved Converter.

TEXTBOOKS:

• 1. Mohammed H. Rashid, “Power Electronics”, Pearson Education, 3rdEdition, 1stIndian reprint, 2004.
• 2. Ned Mohan Tore M. Undeland and William P. Robbins, “Power Electronics”, John Wiley & Sons, 2nd Edition.

REFERENCES:

• 1. Milliman Shepherd and Lizang, “Power converters circuits”, Chapter 14 (Matrix converter) pp. 415- 444.
• 2. M.H.Rashid, ”Power Electronics Hand Book”.
• 3. Marian P. Kaźmierkowski, Ramu Krishnan, Frede Blabjerg Edition, “Control in Power Electronics”,Published by Academic Press, 2002. M. Tech – II Semester L T P C 3 0 0 3