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Zhao, Hongbo

Hongbo Zhao

PROJECT TITLE: Medium Voltage Grid-tied Power Stacks Enabled by 10kV SiC MOSFETs
 

PhD period: 2018.11.01 - 2021.10.31. 
Section: Power Electronic Systems
Research Programme: Electronic Power Grid (eGrid)
Supervisor: Stig Munk-Nielsen
Co-Supervisor: Xiongfei Wang
Contact information

Collaborator: To be announced later.
Funding: Department of Energy Technology.

ABSTRACT

With the rapid requirements of energy conversion, the demand of power electronic converters connected to power grids become continuously increasing in the past decades. The transistors, which play important roles in power conversion, have been renewed and upgraded through several revolutions. Nowadays, the most attractive ones are wide band-gap transistors, which are Silicon carbide (SiC) transistors and Gallium Nitride (GaN) transistors. Because of the wide band-gap, the SiC transistors or GaN transistors enabled converters have the ability to operate with better electrical characteristics, such as higher voltage stress, higher frequency, higher efficiency and so on. In this project, the power stack enabled by 10kV SiC MOSFETs will be designed for medium voltage grid connected applications as the first stage task. The focuses of the second stage task will be the optimized design of LCL filters and the potential dv/dt filters under high dv/dt situations. After that, the grid forming operation and co-design of the fast fault current control and hardware operation will be considered using the designed power stack and LCL filters.

Papers

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