Gadalla, Brwene Salah Abdel Karim

Project title: Thermal Investigation of Buck-Boost Power Converters

PhD period: 2014.01.01 – 2016.12.31. (has been prolonged till 2017.09.30.)
Section: Power Electronic Systems
Research Programme: Efficient and Reliable Power Electronics
Supervisor: Erik Schaltz 
Co-Supervisor: Frede Blaabjerg
Contact information

Collaborators: Vestas Wind Systems A/S, Grundfos A/S, Danfoss A/S and kk-electronic a/s.
Funding: Electrical and Control Department, Arab Academy for Science, Technoogy, and Maritime Transport, Egypt & The Department of Energy Technology, AAU.


Hypothesis: Power converters have many existing and expected future applications. Better understanding of their thermal aspects is likely to benefit their future design and development.

Description: Buck-boost converters are topologies designed with output voltages/currents that can step down or up freely. This capability is not demonstrated by typical voltage-source and current-source converters which subsequently prompts the development of buck-boost power converters. The development is however confined to topological aspects and seldom others like thermal considerations. It is thus of interest to study and compare their thermal performances which indirectly will affect their reliability and efficiency. Upon gaining the necessary understanding, methods aiming to improve thermal flows of power converters can be proposed and compared.

Expected Results: 1) Models for identifying and quantifying possible thermal concerns in buck-boost power converters. 2) Methods for mitigating the identified concerns and hence improving the overall converter performances.


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