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

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Area of Expertise

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

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Publications

The effect of grid-connected converter control topology on the diagonal dominance of converter output impedance

Henderson Callum, Egea-Alvarez Agusti, Fekriasl Sajjad, Knueppel Thyge, Amico Gabriele, Xu Lie

IEEE Open Access Journal of Power and Energy, pp. 1-11 (2023)

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

Chance-constrained optimization of storage and PFC capacity for railway electrical smart grids considering uncertain traction load

Chen Yinyu, Chen Minwu, Xu Lie, Liang Zongyou

IEEE Transactions on Smart Grid (2023)

https://doi.org/10.1109/tsg.2023.3276198

Inertia and frequency support from Britain's AC powered trains

Henderson Callum, Egea-Alvarez Agusti, Rull-Duran Joan, Nedd Marcel, Papadopoulos Panagiotis N, Xu Lie

IEEE Transactions on Sustainable Energy Vol 14, pp. 1259-1268 (2023)

https://doi.org/10.1109/TSTE.2022.3221192

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, pp. 1-10 (2023)

https://doi.org/10.1109/TPWRD.2022.3233455

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

More publications

Research

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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

Pan Continental DC Grids

Xu, Lie (Principal Investigator) Egea Alvarez, Agusti (Co-investigator) Chen, Yin (Research Co-investigator)

01-Jan-2023 - 29-Jan-2024

Introduction to Power Electronics and Electric Machines

Ahmed, Khaled (Principal Investigator) Egea Alvarez, Agusti (Co-investigator) McNeill, Neville (Co-investigator) Xu, Lie (Co-investigator)

26-Jan-2023 - 08-Jan-2023

SIF Black start Demonstrator from offshore wind (SIF BLADE)

Egea Alvarez, Agusti (Principal Investigator) Ahmed, Khaled (Co-investigator) Dysko, Adam (Co-investigator) Tzelepis, Dimitrios (Co-investigator) Xu, Lie (Co-investigator)

01-Jan-2023 - 30-Jan-2023

Superconducting Direct Current for a Decarbonised 2050 Grid: PDRA 3

Xu, Lie (Principal Investigator) Egea Alvarez, Agusti (Co-investigator) Yuan, Weijia (Co-investigator) Chen, Yin (Research Co-investigator)

Linked to 180100 for overarching agreement

07-Jan-2022 - 31-Jan-2024

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

More projects