73924 - Power Electronic Circuits M

Course Unit Page

Academic Year 2018/2019

Learning outcomes

At the end of the course students own the knowledge of the principles of modern power electronics: power diodes, controlled switches. They also acquire the knowledge of the following items: commutation transients, reverse recovery, and losses; how the pulsewidth modulation works, including harmonic analysis of voltage and currents. The students are further capable of calculating and improving the conversion efficiency. Knowledge of DC/DC converters, voltage and current transfer ratio, multi-level converters; DC/AC converters, single-phase, three-phase and multi-phase; The space vector analysis of multiphase AC systems; Space vector modulation of three phase inverters are also elements of the cultural skill that the students acquire at the end of the course.

Course contents

Supplements of linear and non-linear electric circuits. Non sinusoidal periodic waveforms. Current and voltage harmonic distortion and powers in non-sinusoidal steady-state. Power diodes and SCRs. Rectifiers: single-phase and three-phase. Power electronic switches: BJT, MOSFET, IGBT, emerging components. Basics of pulse width modulation (PWM). Choppers: buck, boost, buck-boost, Cùk, full bridge. Single-phase inverters. Three-phase inverters. The current regulation by voltage source converter. Power active filters. Multi-phase and multi-level inverters.

Readings/Bibliography

- Mohan, Undeland, Robbins: Power Electronics. J.Wiley & Sons

- Rashid: Power Electronics: Circuits Devices and Applications. Prentice Hall

- Kassakian, Schlecht, Verrghese: Principles of Power Electronics. MIT Addison-Wesley

Teaching methods

Classroom lessons (theory and applications). Some practical experiences in the Lab.

Assessment methods

Written and eventually oral exam (interview). Possibility of midterm written exams.

Teaching tools

Lesson notes in English. Use of LTspice for circuit simulations.

Italian textbooks are also available. Please directly contact the professor.

Office hours

See the website of Gabriele Grandi

See the website of Mattia Ricco