20801888 - POWER ELECTRONICS

Understanding configurations and operating characteristics of static power apparatus that use semiconductor devices for achieving the controlled conversion of electric energy. Learning how to use of electronic power converters in the main areas of application such as electrical drives, uninterrupted power supply (ups) systems, distributed generation of electric power from renewable sources and improved management of energy storage systems.
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Programme

Construction features and operating characteristics of the semiconductor components (power diodes, thyristors, power MOSFETs, GTOs, IGBTs) and the passive components (inductors and capacitors) that are being used in power electronic converters; conduction losses and switching losses in the semiconductor components, cooling systems of the power electronic converters.
Structure and operating characteristics of diode rectifiers and thyristors power converters for application in either single-phase or three-phase power grids. Switching power converters: configuration and operating characteristics of different types of DC /DC power converters such as Buck, Boost, Buck-Boost and Full-bridge converters with either bipolar or unipolar PWM; DC/AC voltage source power converters: structure and operating characteristics of switching power converters for use as either inverter or rectifier mode of operation in either single-phase or three-phase power circuits; discussion of sinusoidal PWM techniques and Space-Vector PWM and their application in the regulation of DC / AC converters; current-controlled power converters: modulation techniques with control the output current by means of either hysteresis band or predetermined switching time.
Power switching supplies: conceptual structure and main components, including high-frequency transformers. Operating characteristics of power converter topologies used in power switching supplies such as Flyback, Forward, Push-Pull and Full-Bridge. Overview of resonant power converters: converters with resonant load; ZVS and ZCS converters; DC converters with resonant link.
Use of power electronic converters in the main application fields such as electric drives used in industry or in the fields of biomedical equipment, assistive technology and rehabilitation; the UPS or emergency systems for the power supply of either ICT systems or electro-medical equipment; distributed generation of electrical power from renewable sources and the optimized management of energy storage systems.

Core Documentation

Power Electronics: Converters, Applications, and Design, 3rd Edition
Ned Mohan, Tore M. Undeland, William P. Robbins
ISBN: 978-0-471-22693-2

Additional teaching material used by the lecturer during the lessons and exercises, which is made available to students enrolled in the course on the Moodle portal of the Department of Engineering.

Attendance

Class attendance is not mandatory but strongly recommended to benefit from continuous interaction with both the lecturer and other students.

Type of evaluation

Knowledge of course topics and use of appropriate language in exposition of issues.