Power Electronics - Components, Converters, Control and Applications (EIEN 25)


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.

ABB_robot Electric CarLED driver Fan Heatpump HVDC  ESS 

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 Akanksha Upadhyey, Max Collins and Samuel Estenlund, all PhD students at IEA.

Lectures

Lecture 1 - Intro & Switches
Lecture 2 - Bridges and snubbers
Lecture 3 - DC/DC conv + 1 phase modulation
Lecture 4 - H-bridge + 2 phase modulation
Lecture 5 - Speed Control
Lecture 6 - DC Current Control
Lecture 7 - Torque Generation
Lecture 8 - DC Machine
Lecture 9 - 3 Phase Modulation
Lecture 10 - 3 Phase Current Control
Lecture 11 - Static VAr Compensation
Lecture 12 - Active Filters
Lecture 13 - Passive components
Lecture 14 - PMSMmodelling 1, PMSMmodelling2, PMSMexercise, PMSMexercise_example
Lecture 15 - PMSMcontrol, PMSMcontrol1, PMSMcontrol2, PMSMexercise_example
Lecture 16 - Lab PMSM preparation
Lecture 17 - Semconductor I
Lecture 18 - Semiconductor II
Lecture 19 - Thermal modelling (losses)
Lecture 20 - Thermal modelling (cooling), Lecture video 1, Lecture video 2
Lecture 21 - IM modelling & control pdf, Lecture video 1, Lecture video 2
Lecture 22 - Resonant & multilevel converters pdf, Lecture video
Lecture 23 - Electrmagnetic Compatibility
Lecture 24 - Guest Lecture
Lecture 25&26 - Summary pdf, Lecture video 1, Lecture video 2, Lecture video 3, Lecture video 4


Study guide

Suitable book chapters and exercises matched with lectures

Exercises

Exercises with solutions 2020 Update!

Laborations

Lab 1 - The flyback converter

Installation of LTspice IV or XVII Software

  • Download LTspice IV or XVII
  • Simulation exercise (Deadline 28/1: akanksha.upadhyay(at)iea.lth.se)

  • Instructions & what to investigate?
  • Library and schematic files for Flyback converter simulation exercise
  • IF you have problems using installing and using the specific transisitor in the flyback circuit, any other suitable model in the buoild in library can be used instead.
  • Lab manual (Derive expressions for 3, 4, 5 before your lab session)

  • Lab manual

  • A short report regarding the simulation exercise should be handed in latest 14th of February by email to akanksha.upadhyay(at)iea.lth.se

  • Lab 2 - The H-bridge converter

    Simulation exercise (Deadline 5/2: akanksha.upadhyay(at)iea.lth.se) H-bridge dc/dc converter.

    Design of an Analog Modulator for an H-Bridge dc-dc converter

    Assignment 2 - half bridge circuit

    Lab manual (Do exercises 1, 3, 4 and 5 before your lab session)

    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

    Lab manual
    Home assignment instructions
    Simulation files
    Introduction videos
    Comments videos
    Doodle link for lab signup - expired

    Supervisor: Samuel Estenlund in Room 2469A M-building 2nd floor (above formula student)
    or email samuel.estenlund(at)iea.lth.se

    Lab 4 - The active filter

    Lab manual
    Home assignment instructions
    Simulation files
    Doodle link for lab signup

    Supervisor: Max Collins in Room 2478 M-building 2nd floor (above formula student)
    or email max.collins(at)iea.lth.se

    Lab 5 - The PMSM

    Ordinary lab manual
    Home assignment instructions - Deadline May 1st
    Simulation files
    Introduction videos
    Comments videos
    Doodle link for lab signups - NOT to come
    Home lab manual - Deadline May 8th

    Introduction: March 26, 13-17
    Supervisor: Samuel Estenlund in Room 2469A M-building 2nd floor (above formula student)
    or email samuel.estenlund(at)iea.lth.se

    Lab 6 - The induction machine

    Home lab manual - Deadline May 22nd (To come)
    Home lab video
    Home assignment instructions - Deadline May 15th
    Simulation files
    Introduction videos
    Comments videos

    Introduction: May 5, 15-17
    Supervisor: Samuel Estenlund in Room 2469A M-building 2nd floor (above formula student)
    or email samuel.estenlund(at)iea.lth.se

    Previous Exams

    OldExams20

    Course Material

    Course Plan

    Course compendium This book is subject to being upgraded during the course. Please check in here for pdated versions.

     

     

     

    2/6-20: Exercises with solutions, 2020 Update!

    1/6-20: Lecture 25&26 slides and videos. Examples of previous exams

    Guest Lecture on Tuesday 19/5:

    Dr Gabriel Dominguez, who is a specialist in power electronic drive trains at Borg Warner (one of the largest  players in the world of Automotive drive trains), will share his view on electric drive train technology and trends

    Corona - News - Updated 25/3 2020!

    In the wake of the Corona - virus we all have to contribute to slowing down the spread of infections. This will affect the remaining teaching in this course as well. From now on, no teaching activities will happen at Campus. This means :
    1. The lectures will be given over Zoom. The  relevant links are listed by the lectures on the left side of this page. The slides in pdf-format and a pre recorded version of the lecture will also be available there after the lectures.
    2. The labs will NOT be run as planned. Instead you will be given an extended home assignment, containing also additional questions to answer that requires you to look at some filmed sequences from the laboratory. The Active Filter lab  instructions and home assignment will be distributed on March 29. The deadline for reporting the Active Filter Lab will be April 12. That gives you 2 weeks to prepare the lab report! The corresponding dates for the subsequent labs will be announced later.

    Contact

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

    The teachers (except Mats) are all located in the south east corridor of the M-building, one floor above ground.

    Phone: 046-229290

    Mail:

    Secretary:    studexp(at)iea.lth.se

    Akanksha:   akanksha.upadhyay(at)iea.lth.se

    Max:   max.collins(at)iea.lth.se

    Samuel:   samuel.estenlund(at)iea.lth.se

    Mats:   mats.alakula(at)iea.lth.se

    Avo:   avo.reinap(at)iea.lth.se