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”.


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


PhD in Electrical Eneginnering from University of Sheffield, 2000


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)
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)
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)
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)
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)
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


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


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


Electronic and Electrical Engineering
Royal College

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