Why take this course?

The growth of humanity, from less than 2 billion in the end of the 19th century to over 7 billion in the beginning of the 21st century is strongly related to our ability to use energy. The use of fossile energy cause severe problems with the environment and is truly challenging the future of man kind. We strongly need I) to reduce our use of energy and II) to transfer from fossil and probably nuclear to renewable energy sources.

This is where Power Electronics is important. Independent of primary energy source, a lot of our use of energy involves electric energy technology. Manufacturing, transport, lighting, ventilation, heating, electricity transmission, physics research, ... all involve one or several steps where the energy is converted to electricity before finally consumed. In addition, renewable energy sources like wind, wave and solar are entirely dependent on conversion of the primary energy source to electricty as an intermediate state before finally consumed.

In most, if not all, of these applications the energy is converted by means of switching power electronics converters built by power semiconductors and controlled in real time by very fast control systems. The development of modern power electronics started half a century ago and is today developing faster than ever before. As an engineer with ambitions to work with, or just understand the fundaments of, electric energy conversion and control, it is important t study power electronics - it is involved "everywhere" in electric energy flow control.

This course is given to provide a deep understanding of the technologies involved, the requirements and limitations, the opportunities and to give the understanding and tools to help those who want to contribute to the development.

The course is built on lectures,labs, exercises. The labs are prepared within the Matlab/Simulink environment such that you by the computer get a chanse to understand the dynamic behaviour that you will se on instruments in the lab.

Teachers

The course is given by Professor Mats Alaküla, and Associate Professor Avo Reinap.

The course is assisted by Philip Abrahamsson, Akanksha Upadhyey, Max Collins and Samuel Estenlund, all PhD students at IEA.

Lectures

Lecture 1 - Intro & Switches

Lecture 2 - Bridges, switches and snubbers

Lecture 3 - Q1, Q2 and single phase modulation

Lecture 4 - Q4 and two phase modulation

Lecture 5 - Speed Control

Lecture 6 - DC Current Control

Lecture 7 - Torque generation

Lecture 8 - DC machine

Lecture 9 - AC and three phase modulation

Lecture 10 - AC Current Control

Lecture 11 - Grid Connected Power Converters

Lecture 14 - Passive components

Lecture 15 - PMSM with control

Lecture 16 - Semiconductor components I

Lecture 18 - Semiconductor components II

Lecture 19 - Losses

Lecture 20 - Cooling

Lecture 21 - Induction Machine

Lecture 22 - Guestlecture_automotive

Lecture 23a - Introduction to MMC

Lecture 23b - Multilevel Converters

Lecture 24 - EMC

Lecture 25 - Summary

Study guide

Exercises

Laborations

Lab 1 - The flyback converter

Installation of LTspice IV or XVII Software

Simulation exercise (Deadline 28/1: akanksha.upadhyay(at)iea.lth.se)

Lab manual (Derive expressions for 3, 4, 5 before your lab session)

Lab 2 - The H-bridge converter

Simulation exercise (Deadline 18/2: akanksha.upadhyay(at)iea.lth.se) H-bridge dc/dc converter

A short report regarding the simulation exercise should be handed in latest 28th of February by email to akanksha.upadhyay(at)iea.lth.se

Lab 3 - The DC machine

Contact

The Student adminstration office is open weekdays 11:00-12:30 on the second floow in the M-building. Other times by agreement.

Phone: 046-229290

Mail: studexp@iea.lth.se