Professor Lie Xu

Electronic and Electrical Engineering

Personal statement

I joined the University in 2013 and is currently a Professor in the Department of Electronic and Electrical Engineering. I received my PhD in Electrical engineering from University of Sheffield in 2000 and started my career with ALSTOM, developing VSC based HVDC systems. My main research interests and experiences are in the areas of power electronics, converter control for grid connection of renewables, control and operation of HVDC systems and stability of power network with large converter penetration. I have published over 200 journal and conference papers and received the 2013 IET Renewable Power Generation Premium Award for my published paper “DC voltage control and power dispatch of a multi-terminal HVDC system for integrating large offshore wind farms”.

Expertise

Has expertise in:

Power electronic system modelling and control design
HVDC system modelling and control
Stability assessment and improvement of future power system
Renewable energy integration

Qualifications

PhD in Electrical Eneginnering from University of Sheffield, 2000

Publications

Modelling of a high-temperature superconductor HVDC cable under transient conditions: Chaganti Pavan, Yuan Weijia, Zhang Min, Xu Lie, Hodge Eoin, Fitzgerald John; IEEE Transactions on Applied Superconductivity Vol 33 (2023); https://doi.org/10.1109/tasc.2023.3251948
Grid strength impedance metric : an alternative to SCR for evaluating system strength in converter dominated systems: Henderson Callum, Egea-Alvarez Agusti, Knueppel Thyge, Yang Guangya, Xu Lie; IEEE Transactions on Power Delivery (2023); https://doi.org/10.1109/TPWRD.2022.3233455
Inertia and frequency support from Britain's AC powered trains: Henderson Callum, Egea Alvarez Agusti, Rull-Duran Joan, Nedd Marcel, Papadopoulos Panagiotis, Xu Lie; IEEE Transactions on Sustainable Energy (2022); https://doi.org/10.1109/TSTE.2022.3221192
Analysis of multi-converter network impedance using MIMO stability criterion for multi-loop systems: Henderson Callum, Egea-Alvarez Agusti, Xu Lie; Electric Power Systems Research Vol 211 (2022); https://doi.org/10.1016/j.epsr.2022.108542
Exploring an impedance-based SCR for accurate representation of grid-forming converters: Henderson Callum, Egea-Alvarez Agusti, Papadopoulos Panagiotis, Li Rui, Xu Lie, Da Silva Ricardo, Kinsella Anthony, Gutierrez Isaac, Pabat-Stroe Razan; 2022 IEEE Power and Energy Society General Meeting, PESGM 2022 2022 IEEE Power and Energy Society General Meeting IEEE Power and Energy Society General Meeting Vol 2022-July, pp. 1-5 (2022); https://doi.org/10.1109/PESGM48719.2022.9916733
Review and comparison of single and dual active bridge converters for MVDC-connected wind turbines: Timmers Victor, Egea-Álvarez Agustí, Gkountaras Aris, Xu Lie; 21st Wind & Solar Integration Workshop (2022)

More publications

Teaching

Power electronics, converter modelling, HVDC transmission

Research interests

Power electronics for renewable power generation and integration
HVDC system for renewable energy integration and network connection
Stability of converter dominated power network
DC Microgrid

Projects

HVDC-based grid architectures for reliable and resilient WIdeSprEad hybrid AC/DC transmission systems: Egea Alvarez, Agusti (Principal Investigator) Ahmed, Khaled (Co-investigator) Bell, Keith (Co-investigator) Xu, Lie (Co-investigator); 01-Jan-2022 - 31-Jan-2026
Distributed multiport converters for integration of renewables, storage systems and loads while enhancing performance and resiliency of modern distributed networks (iPLUG): Egea Alvarez, Agusti (Principal Investigator) Xu, Lie (Co-investigator); 01-Jan-2022 - 31-Jan-2025
SSE-Protection-Field Trial: Hong, Qiteng (Principal Investigator) Booth, Campbell (Co-investigator) Dysko, Adam (Co-investigator) Egea Alvarez, Agusti (Co-investigator) Tzelepis, Dimitrios (Co-investigator) Xu, Lie (Co-investigator); Extension/Additional Funding associated with RKES 210195; 12-Jan-2021 - 28-Jan-2025
Potential solutions for AC protection in converter-dominated networks: Hong, Qiteng (Principal Investigator) Booth, Campbell (Co-investigator) Dysko, Adam (Co-investigator) Egea Alvarez, Agusti (Co-investigator) Tzelepis, Dimitrios (Co-investigator) Xu, Lie (Co-investigator); Related to rkes 211743; 01-Jan-2021 - 28-Jan-2025
Interaction of onshore AC network and large offshore DC network based on HTS cables: Xu, Lie (Principal Investigator) Yuan, Weijia (Co-investigator); Related to RKES 180100 (Overarching IP agreement) and follow-on to 200775RKES; 01-Jan-2021 - 31-Jan-2022
Electrical design of HTS cables for offshore wind farm connections: Yuan, Weijia (Principal Investigator) Xu, Lie (Co-investigator) Zhang, Min (Co-investigator); 30-Jan-2020 - 31-Jan-2024

More projects

Address

Electronic and Electrical Engineering
Royal College

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