Applications in Power Electronics Engineering

Power electronics is a vital field of electrical and electronics engineering that deals with the conversion, control, and management of electrical energy using semiconductor devices. Learning power electronics is important for Efficient Energy Conversion. Power electronics enables efficient conversion of electrical energy from one form to another, reducing energy losses in power systems, renewable energy applications, and consumer electronics. It is at the heart of electric vehicle (EV) technology, controlling battery management, motor drives, and charging systems. Advancements in this field improve the efficiency, performance, and range of EVs. Many industrial applications, such as motor drives, robotic systems, and automated machinery, rely on power electronic converters and controllers to ensure precise and efficient operation. Learning power electronics is crucial for anyone interested in energy systems, electric vehicles, automation, and modern technology. As industries continue to evolve, expertise in power electronics will remain essential for innovation and sustainable development.

Syllabus

Unit – I Power Electronic Devices Power electronic devices-Power diodes- Power transistor: construction, working principle, V-I characteristics and uses. MOSFET and IGBT: Construction, working principle, V-I characteristics and uses-COOLMOS.

Unit – II Phase Controlled Rectifiers Phase control: firing angle, conduction angle. Single phase half controlled, full controlled and midpoint controlled rectifier with R, RL load: Circuit diagram, working, input- output waveforms, equations for DC output and effect of freewheeling diode. Different configurations of bridge controlled rectifiers: Full bridge, half bridge converters-applications

Unit– III DC-DC Converters- Non-Isolated- Buck, Boost, Buck- Boost and Cuk converters: Principles of operation – Continuous conduction mode– Concepts of volt-sec balance and charge balance – Analysis and design based on steady state relationships – Introduction to discontinuous conduction mode - SEPIC topology – Luo Converters - Applications to Battery operated vehicle, PV system.

Isolated Converters - Introduction - classification- forward- flyback- pushpull – half bridge – full bridge topologies design of SMPS - Applications to Battery operated vehicle

Unit– IV Introduction to self-commutated switches: MOSFET and IGBT - Principle of operation of half and full bridge inverters – Performance parameters – Voltage control of single phase inverters using various PWM techniques-180 degree and 120 degree conduction mode inverters with star and delta connected loads – voltage control of three phase inverters: single, multi pulse, sinusoidal, space vector modulation techniques – VSR operation- Current source inverters

Unit– V Multilevel concept – diode clamped – flying capacitor – cascaded type multilevel inverters - Comparison of multilevel inverters - application of multilevel inverters – PWM techniques for MLI-Applications