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Past seminars at IEA in 2014

Past seminars in 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998


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Thursday 27/11 kl 10:30, M:IEA (seminar room)

Presentation of Master Thesis:

"Retrofitting a Mini Excavator with a Digital Control System"

Pehr Wänggård Persson and Kristoffer Ohlsson
Danfoss Power Solutions AB, Älmhult


Supervisors: Gunnar Lindstedt, IEA

Examiner: Ulf Jeppsson, IEA


Monday 17/11 kl 13:00, M:B (M-huset, Ole Römers väg 1, Lund)

Licentiate Thesis Seminar:

"Critical Infrastructures as Socio-Technical Systems: Applications to electricity distributions systems"

Finn Landegren


Supervisors: Assoc. Prof. Olof Samuelsson (IEA), Dr. Jonas Johansson (IEA)

Opponent: Prof. Gerd Kjølle, SINTEF Energy Research, Trondheim

Examiner: Assoc. Prof. Ulf Jeppsson, IEA, LTH


Wednesday 12/11 kl 13:00, M:B (M-huset, Ole Römers väg 1, Lund)

Licentiate Thesis Seminar:

"Electric Traction Machine Design for Heavy Hybrid Vehicles"

Rasmus Andersson


Supervisors: Prof. Mats Alaküla (IEA), Assoc. Prof. Avo Reinap (IEA), Dr. Anders Hedman (Volvo GTT)

Opponent: Prof. Yujing Liu, Chalmers University of Technology

Examiner: Assoc. Prof. Gunnar Lindstedt, IEA, LTH


Thursday 23/10 kl 10:30, M:IEA (seminar room)

Master Thesis Presentation:

"Multi-objective Optimal Dimensioning of Modular Power Converters"

Anders Eriksson and Johan Persson

Abstract:
This master thesis was carried out at Lund University in collaboration with the European Spallation Source (ESS). It brings up the question of whether it's possible to find an optimal solution for complex electric power electronic topologies, using a well formulated global optimization methodology. The commercially available software tool MATLAB was adopted for these studies, including its own toolbox for optimization. These tools and associated solvers will be described for the optimal design of two different problems:- a power inductor and a multilevel DC/DC power converter. In both cases, the objective function consists of the sum of the capital costs (price of the systems in question) and of the long term operating costs (power losses and maintenance cots). A set of constraints to which the design should comply with is also defined for each case and these will comprise parameters like maximum volume of the system, minimal output performance (value of inductance, maximal saturation field density, maximal current density for the first example or output voltage ripple, volume for the second example), etc. The methodology consists of five steps, the first one is to describe the problem to be optimized. In the second step all the data and information needed to give an accurate view of the problem is to be collected. The third step contains a description of the problem with an objective function that should be optimized. The fourth step corresponds to the definition of the boundaries or constraints. Finally, the fifth step consists on the evaluation of the obtained results.

Supervisor: Carlos Martins, ESS and IEA.

Examiner: Mats Alaküla, IEA.


Wednesday 22/10 kl 16:00, M:IEA (seminar room)

Master Thesis Presentation:

"Electro Mechanic Design and Test of Conductive Electrical Road System - Overall System Design and Protection"

Philip Abrahamsson

Description:
This master thesis is about building and testing of a new idea for how to provide cars with power directly from the road by a conductive connection. The electric road system is analyzed with regard to dynamic thermal and electromagnetic properties including lighting protection. The thermal model includes solar radiation and variations in traffic intensity. Both FEM models and lumped parameter models are used.

Supervisor: Lars Lindgren, IEA

Examiner: Mats Alaküla, IEA


Wednesday 1/10 kl 16:00, M:IEA (seminar room)

Master Thesis Presentation:

"Electro Mechanic Design and Test of Conductive Electrical Road System - Primary Circuit"

Marcus Andersson

Description:
This master thesis is about building and testing of a new idea for how to provide cars with power directly from the road by a conductive connection. For safety reasons this requires switching on and off the power to small sections as the vehicles passes by. A very compact 600 V, 400 A, IGBT switch prototype with driver and short-circuit protection are designed and built. The design are analyzed and tested for both thermal and electric properties. Furthermore a compact specialized high current connector has been built and tested.

Supervisor: Lars Lindgren, IEA

Examiner: Mats Alaküla, IEA

Opponents: Christopher Dahlin.


Wednesday 2 July 2014, 11:15 in M:IEA (seminar room)

Master Thesis presentation:

"Visionsystem för tillverkning av förpackningsmaterial"

Markus Lidborn

This work has been carried out at Tetra Pak AB.

Supervisor: Gunnar Lindstedt (IEA)

Examiner: Ulf Jeppsson (IEA)



Wednesday 2 July 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"HTML5-baserad PLC-editor"

Fredrik Bengtsson och Ivan Flink

This work has been carried out at B & R Industrial Automation AB.

Supervisor: Gunnar Lindstedt (IEA)

Examiner: Ulf Jeppsson (IEA)



Friday 27 June 2014, kl 13:15, M:IEA (seminar room)

Master Thesis presentation:

"Electro mechanic design and testing of a conductive electrical road system, control system"

Henrik Fritzon

Supervisor: Lars Lindgren (IEA), Dan Zethraeus

Examiner: Mats Alaküla (IEA)



Wednesday 18 June 2014, 11:15 in M:IEA (seminar room)

Master Thesis presentation:

"HMI i kemisk industri"

Emil Lavin

This work has been carried out at Perstorp AB.

Supervisor: Gunnar Lindstedt (IEA)

Examiner: Ulf Jeppsson (IEA)



Wednesday 18 June 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"Optimering av produktionslinje för burktillverkning"

Sara Nilsson och Simon Larsson

This work has been carried out at Rexam AB.

Supervisor: Gunnar Lindstedt (IEA)

Examiner: Ulf Jeppsson (IEA)



Monday 16 June 2014, 14:00 in M:IEA (seminar room)

Master Thesis presentation:

"Wind turbine control"

Tiago Marquez

Supervisor: Jörgen Svensson (IEA)

Examiner: Olof Samuelsson



Monday 16 June 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"Vindkraftens påverkan på elnätet ur förlust-, hållbarhets- och investeringssynpunkt"

Zahoor Suleman

Supervisors: Mikael Håkansson (EON Elnät), Olof Samuelsson (IEA)

Examiner: Jonas Johansson



Monday 16 June 2014, 9:00 in M:IEA (seminar room)

Master Thesis presentation:

"Grid Capacity Issues with Distributed Generation - A German case study"

Olof Bogardh and Nofel Dakhel

Supervisors: Olof Samuelsson (IEA), Alexander Knake and Antje Cieleit (EON Technologies, Gelsenkirchen)

Examiner: Jörgen Svensson



Wednesday 11 June 2014, 13:00 in M:IEA (seminar room)

Master Thesis presentation:

"Transformatorers beteende vid fasavbrott i matande spänning"

Anton Christensson and Erik Lingärde

Supervisors: Sture Lindahl (Gothia Power för OKG), Fredrik Heyman (OKG), Francesco Sulla (IEA)

Examiner: Olof Samuelsson



Wednesday 11 June 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"Flexible AC/DC Grids in Dymola/Modelica - Modeling and Simulation of Power Electronic Devices and Grids"

Jens Sloth and Andreas Olenmark

Supervisors: Carl Wilhelmsson (Modelon) Jörgen Svensson (IEA)

Examiner: Olof Samuelsson



Wednesday 11 June 2014, 9:00 in M:IEA (seminar room)

Master Thesis presentation:

"Analys och förslag till flytande vindkraft i Norge"

Daniel Nilsson and Anders Westin

Supervisors: Jörgen Svensson (IEA), Marte de Picciotte (DNV GL, Oslo)

Examiner: Olof Samuelsson



Tuesday 10 June 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"Reliability Analysis of the Fortum Local Network Using Tekla NIS"

Anton Grönqvist

Supervisors: Lars Enarsson (Fortum), Jonas Johansson

Examiner: Olof Samuelsson



Wednesday 4 June 2014, 10:30 in M:IEA (seminar room)

Master Thesis presentation:

"Reactive Power Control During Power System Restoration and HVDC Investigation"

Christian Bergstrand and André Peterson

Supervisor: Mohammad Reza Safari Tirtashi

Examiner: Olof Samuelsson



Tuesday 10 June 2014, 9:00 in M:IEA (seminar room)

Master Thesis presentation:

"Reliability Analysis of the Fortum Local Network Using Tekla NIS"

Anton Grönqvist

Supervisors: Lars Enarsson (Fortum), Jonas Johansson

Examiner: Olof Samuelsson



Monday 2 June 2014, 9:00 in M:IEA (seminar room)

Bachelor Thesis presentation:

"Damping Estimation in the Nordic Power System with Neural Networks"

Emil Måsbäck

Supervisor: Francesco Sulla

Examiner: Olof Samuelsson



Monday 2 June 2014, 11:00 in M:IEA (seminar room)

Master Thesis presentation:

"Distribution of Geomagnetically Induced Currents in Transmission Networks"

Carlos Fernández

Supervisor: Jonas Johansson

Examiner: Olof Samuelsson



Wednesday, May 14, 2014 @ 9:00 hr. in M:IEA (seminar-room)

Master Thesis Presentation:

"High Voltage Pulsed Power Converters for the ESS Linear Accelerator"

Tobias Ogard
Simon Persson

Abstract:
Material science has become an important research area in order to fulfill today's requirements on lighter, cheaper and more sustainable materials. The European spallation source is a research center based on the world's most powerful neutron source, which will enable new possibilities to evaluate material properties down to an atomic level. The linear accelerator (Linac), accelerates with help of electromagnetic fields, protons to a speed of 96.2 % of the light. Due to high power and the pulsing nature of the accelerator an extremely advanced electrical supply is required. This master´s thesis comprises a concept topology for solving the electrical supply. The electrical supply consists of two series connected steps, which will be stacked in modulators. The first step is a low voltage grid connected capacitor bank charger, the second step converts the power to a high voltage pulsing pattern. This project comprises the first stage (the capacitor charger) which consists of an Active Front End in series with a DC/DC-converter. The main objectives are to fulfil the international standards regarding power quality, where main focus will be on flicker, low frequency harmonics emission and unitary power factor. In order to fulfill these goals with pulsating loads connected, a completely new developed power control introduced. Mathematical models have been derived in order to verify the functionality and to tune all the developed controls. A complete final implementation is done with the help of Matlab Simulink to more in-depth verify the different control parameters. The full implementation is also managed to check that the international standards are met. Complete calculations of power losses are also presented with evaluation of results and possible improvements. Together with the limitations, goals of the degree project and basic equations are merely everything in this report derived. The topology is shown to be extremely effective with very good results in terms of output voltage quality and on flicker and low frequency harmonics impact on the grid. Almost every effects due to the pulsing output nature is totally erased seen from the grid side.

Supervisor: Dr. Carlos A. Martins

Examiner: Prof. Mats Alaküla

Opponents: Andreas Olenmark
Jens sloth


Friday 4th of April, @ 9:00hr, room M:E (M-huset, Ole Römers väg 1, Lund)

In connection with Francisco's Ph.D. defense, a half-day workshop is arranged on the topic:

"Challenges with electric traction drives for vehicles"

The workshop is supported by the Swedish Hybrid Vehicle Center.
For detailed information about the program and registration click here


Thursday 3rd of April, @ 13:15hr, room M:B (M-huset, Ole Römers väg 1, Lund)

Ph.D. Defense and Presentation:

"Electric traction machine design for an E-RWD unit"

Francisco J. Márquez-Fernández

Abstract:
The thesis describes in detail the design process of an electric traction machine for a particular HEV application, an Electric Rear Wheel Drive (E-RWD) unit. The evolution of the design is presented, analyzing the effect of the different driving forces at the different stages. A new machine design methodology based on the description of the load profile in the form of driving cycles is introduced. The manufacturing of a prototype and the experimental validation of the design are also covered in this work. The proposed machine is tested both standalone, and integrated in the E-RWD unit onboard the vehicle. From the experience gained both from the design and the experimental testing phases, it appears that the performance of the machine is usually limited by its thermal capabilities. A way to enhance the cooling capabilities for conventional radial flux machines is presented, together with an additional machine design with a completely novel cooling concept based on direct cooling of laminated stator windings.

Supervisors:
Prof. Mats Alaküla (LTH)
Assoc. Prof. Avo Reinap (LTH)

External examiner:
Dr. Ing. Jörg Merwerth (from BMW, AG)

Examination committee:
Prof. Chandur Sadarangani (KTH)
Assoc. Prof. Anders Grauers (Chalmers)
Dr. Jonas Hellgren (AB Volvo)
Prof. Jinliang Yuan (LTH, reserve)


Wednesday 26/3 @ 10:15 hr. in M:IEA (seminar-room)

Master Thesis Presentation:

"Small-scale wind turbines in urban environment"

Fahimeh Farhadian

Supervisors: Håkan Skarrie (Kraftringen), Jörgen Svensson (IEA-LTH).
Examiner: Olof Samuelsson (IEA-LTH).


Wednesday 5/3 @ 10:30 hr. in M:IEA (seminar-room)

Master Thesis Presentation:

"Energy Harvesting in Wireless Applications"

Kristian Borg

Description:
This work has been carried out at ConnectBlue AB. Various principles and methods to power a sensor in a wireless network have been studied. An implementation with a solar cell and a rechargeable battery (Li-ion) has been made.

Supervisors: Bengt Simonsson (IEA-LTH).
Examiner: Gunnar Lindstedt (IEA-LTH).


Tuesday 11/2 @ 13:00 hr. in M:IEA (seminar-room)

Master Thesis Presentation:

"On-line Estimation of Junction Temperatures in Power Modules"

Josefin Lund

Abstract:
It is critical for the durability of power modules to maintain low enough temperature in its components (IGBTs and diodes).
The goal of this project was to examine methods to estimate the junction temperature of components in an IGBT module in real-time.
After studying literature on the subject, a model was developed using Foster-circuits and feed-back from the NTC-thermistor in the IGBT-module.
This model was tested in a simulation with temperature measured at a nearby point and phase-currents as inputs. Data for the cooling system (heatsink and fan) was estimated from lab experiments. Information about component characteristics was given in the datasheet for the IGBT-module.

Supervisors: Hans Bängtsson (IEA-LTH), Per Södergård (CG Drives & Automation).
Examiner: Mats Alaküla (IEA-LTH).
Opponents: Christoffer Gydenius, Anton Magnusson.



Wedensday till Friday, 15-17/1, 08:30-17:00 in M:IEA (seminar-room)

"LabView FPGA course"

Course description can be found via: this link



Past seminars at IEA in previous years
2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998