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Nielsen, Alex Buus

Nielsen, Alex Buus

Industrial PhD ITW GSE

PROJECT TITLE: Topology Optimization for High Efficiency Wide Band Gap Ground Power Unit

PhD period: 2018.05.01 – 2021.04.30.
Section: Power Electronic Systems
Research Programmes: Efficient and Reliable Power Electronics 
Supervisor: Frede Blaabjerg
Co-Supervisors: Pooya Davari and Bo Vork Nielsen and Søren Dahl
Contact Information

Collaborator: ITW GSE. 
Funding: ITW GSE and Innovationsfonden.


The major part of all power electronic converters today are using silicon (Si) based semi-conductors. However, in the recent years there have been a large interest in Wide Band Gap (WBG) based semi-conductors, due to inherent advantageous physical properties compared to Si devices, like a higher achievable switching frequency, lower switching and conduction losses, high voltage capability, and high temperature operation. These advantages can be translated into possibly higher power density due to a higher switching frequency and reduced sized cooling systems, higher efficiency because of the lower losses, and lower complexity topologies due to high voltage high power devices.

The purpose of this project is to exploit the advantages of WBG devices to optimize a power supply for airplanes, thus include an optimized power topology investigation and design. Furthermore, the power supply for airplanes has stringent demands for output voltage quality, therefore improved control and modulation techniques should also be introduced.


Publications in journals and conference papers may be found at VBN.