Professor Guang-Jin Li
PhD, MSc, BEng
School of Electrical and Electronic Engineering
Professor in Electrical Machines
Electrical Machines and Drives Research Group
  
  +44 114 222 5132
Full contact details
School of Electrical and Electronic Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
- Profile
 - 
    
I graduated from Wuhan University (China) with a Bachelors degree in Electrical Engineering and Automation in July 2007.
Then I received my Master degree in Electric Power Systems from the Universit矇 de Paris XI, Sup矇lec and cole Normale Sup矇rieure de Cachan (ENS Cachan), France, in July 2008.
I was subsequently awarded a PhD degree from ENS Cachan, France, in July 2011. After almost a further year working as a post-doctoral researcher in SATIE laboratory, ENS Cachan, France, I joined the EMD group at the University of Sheffield as a research associate, in June 2012.
I was appointed as a Lecturer in Electrical Machines and Drives in September 2013, and promoted to Senior Lecturer in January 2018 and Professor in January 2022, all at The University of Sheffield.
My main research interests focus on the design aspect of electrical machines. I am particularly interested in renewable energy and EV/HEV applications.
I work closely with Siemens-Gamesa designing novel permanent magnet machines and high temperature superconducting machines for offshore wind power direct drive (DD) generators.
I also explore thermal management and fault diagnostics of various PM machines such as the switched flux and also hybrid excited switched flux PM machines.
These are important areas of research for safety-critical applications such as more electrical aircraft. The fault I am particularly interested is the inter-turn short-circuit, which could cause local overheating and also magnet irreversible demagnetization.
I am also interested in developing magnet free machines, e.g. synchronous reluctance and switched reluctance machines, for applications such as EV/HEV and low cost domestic appliances.
These machines can be supplied with both square wave and sinewave currents. The latter can lead to reduced converter cost.
Moreover, their torque/power density can be significantly increased while the torque ripple can be reduced, so do the vibrations and acoustic noise levels.
 
- Qualifications
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- PhD, ENS de Cachan 2011
 - MSc, University of Paris Sud 2008
 - BEng, Wuhan University 2007
 
 
- Research interests
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- Novel permanent magnet machines including single and hybrid excited switched flux permanent magnet machines
 - Design of novel switched reluctance machines and their drives including direct torque control and hybrid current control
 - Fault tolerance, fault modelling and diagnostics (inter-turn and phase short-circuit) of permanent magnet machines
 - Thermal management (forced air cooling, liquid cooling and ferrofluid cooling) of electrical machines
 - Renewable energy and low emission transportation including wind power, electrical/hybrid vehicles, more electrical aircraft
 
 
- Publications
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Journal articles
- . IET Electric Power Applications, 19(1).
 - . Journal of Electrical Engineering & Technology.
 - . IET Electric Power Applications, 19(1).
 - . Energies, 18(8).
 - . IEEE Transactions on Energy Conversion, 40(3), 2307-2318.
 - . IEEE Transactions on Transportation Electrification, 11(2), 5302-5311.
 - . IEEE Access, 12, 158766-158787.
 - . IET Electric Power Applications, 18(10), 1279-1292.
 - . IEEE Transactions on Industry Applications, 60(5), 6867-6876.
 - . IEEE Transactions on Energy Conversion.
 - . Energies, 17(12).
 - . IEEE Access, 12, 84680-84690.
 - . IEEE Transactions on Energy Conversion, 39(4), 2718-2727.
 - . IET Electric Power Applications, 18(7), 756-765.
 - . IEEE Transactions on Power Electronics, 39(7), 8709-8720.
 - . IEEE Access, 12, 18041-18050.
 - . IEEE Transactions on Energy Conversion, 39(1), 457-468.
 - . IEEE Transactions on Transportation Electrification, 10(1), 1969-1981.
 - . IEEE Transactions on Magnetics, 59(11).
 - . Energies, 16(12).
 - . IEEE Transactions on Transportation Electrification.
 - . IET Electric Power Applications.
 - . Energies, 16(6).
 - . IEEE Transactions on Energy Conversion.
 - Demagnetization analysis of modular SPM machine based on coupled electromagnetic-thermal modelling. Energies, 16(1).
 - . IEEE Transactions on Industrial Electronics, 70(11), 10981-10991.
 - . IEEE Transactions on Magnetics.
 - . IEEE Transactions on Industry Applications.
 - . IEEE Transactions on Magnetics, 58(6).
 - . IEEE Access, 10, 20652-20668.
 - . IEEE Transactions on Industry Applications, 58(2), 1920-1930.
 - . IEEE Journal of Emerging and Selected Topics in Power Electronics, 10(2), 1870-1880.
 - . IEEE Transactions on Energy Conversion, 36(3), 1649-1659.
 - . IEEE Transactions on Energy Conversion, 36(2), 1169-1179.
 - . IET Electric Power Applications, 14(11), 2136-2145.
 - . IEEE Access, 8, 191433-191446.
 - . IEEE Transactions on Industry Applications, 56(4), 3477-3487.
 - . IEEE Transactions on Magnetics, 56(5).
 - . IEEE Transactions on Applied Superconductivity, 30(4), 1-5.
 - . IEEE Access, 7, 109340-109348.
 - . The Journal of Engineering, 2019(17), 4241-4246.
 - . IEEE Transactions on Magnetics, 55(4).
 - . The Journal of Engineering, 2019(17), 4090-4095.
 - . IEEE Transactions on Industrial Electronics.
 - . IEEE Transactions on Energy Conversion.
 - . IEEE Transactions on Magnetics, 54(9).
 - . The Journal of Engineering, 2019 (, 3951-3955.
 - . IEEE Transactions on Industry Applications, 54(3), 2151-2164.
 - . CES Transactions on Electrical Machines and Systems, 2(1), 82-92.
 - . IEEE Transactions on Energy Conversion, 33(3), 1255-1265.
 - . IEEE Transactions on Industry Applications.
 - . IET Power Electronics, 10(12), 1461-1467.
 - . IEEE Transactions on Applied Superconductivity, 27(6).
 - . IET Electric Power Applications.
 - . IEEE Transactions on Applied Superconductivity.
 - . IET Electric Power Applications, 11(6), 1023-1031.
 - . IET Electric Power Applications.
 - . IEEE Transactions on Industrial Electronics, 64(3), 1939-1948.
 - . IEEE Transactions on Applied Superconductivity, 26(8).
 - . IEEE Transactions on Magnetics, PP(99).
 - . IEEE Transactions on Industrial Electronics, 63(7), 4086-4096.
 - . IEEE Transactions on Magnetics, 52(6).
 - . IEEE Transactions on Magnetics, 52(6).
 - . IET Electric Power Applications, 9(9), 586-594.
 - . IEEE Transactions on Magnetics.
 - . IEEE Transactions on Magnetics, 51(11), 1-4.
 - . IEEE Transactions on Magnetics.
 - . IEEE Transactions on Industrial Electronics.
 - . IEEE Transaction on Energy Conversion, 29(3).
 - . IEEE Transaction on Energy Conversion, 29(3), 716-726.
 - . IEEE Transaction on Magnetics, 50(7).
 - . IEEE Transactions on Industrial Electronics, 61(9), 5066-5074.
 - . IEEE Transactions on Industry Applications, 48, 1808-1816-1808-1816.
 - . IEEE Transactions on Magnetics, 48, 2025-2034-2025-2034.
 - . IEEE Transactions on Vehicular Technology, 61, 140-151-140-151.
 - . IET Electric Power Applications, 5, 503-513-503-513.
 - . IEEE Transactions on Magnetics, 47(4), 839-847.
 
Conference proceedings
- . 2025 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 1222-1227), 18 May 2025 - 21 May 2025.
 - . 2023 26th International Conference on Electrical Machines and Systems (ICEMS) (pp 296-301), 5 November 2023 - 8 November 2023.
 - Comparative Study of Axial-Flux Switched Reluctance Machine with Different Core Materials. IEEE
 - Comparative Study of Stator-mounted PM Machines Focusing on Thermal Performance. IEEE
 - Investigation of Ferrofluid Cooling in Modular Permanent Magnet Machines. IEEE INTERMAG
 - Investigation on Axial-Flux Switched Reluctance Machine with Different Winding Configurations. IEEE
 - A Novel High Frequency Voltage Injection Method for Inter-Turn Short-Circuit Fault Detection and Location in Electrical Machines. IEEE
 - Torque performance comparison of stator-mounted permanent magnet machines using genetic algorithm optimization. IEEE, 9 October 2022 - 13 October 2022.
 - . 2022 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 1-7), 9 October 2022 - 13 October 2022.
 - . 2022 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 1-7), 9 October 2022 - 13 October 2022.
 - . 2021 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 1-8), 17 May 2021 - 20 May 2021.
 - . 2021 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 1-7), 17 May 2021 - 20 May 2021.
 - . 2021 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 1-6), 17 May 2021 - 20 May 2021.
 - . IET Conference Proceedings, Vol. 2020(7) (pp 914-919)
 - . IET Conference Proceedings, Vol. 2020(7) (pp 1048-1053)
 - . IET Conference Proceedings, Vol. 2020(7) (pp 759-764)
 - . Proceedings of 2020 International Conference on Electrical Machines (ICEM) (pp 1882-1888). Online conference, 23 August 2020 - 26 August 2020.
 - . 2020 IEEE Energy Conversion Congress and Exposition (ECCE), 11 October 2020 - 15 October 2020.
 - . 2020 IEEE Energy Conversion Congress and Exposition (ECCE) (pp 4253-4260), 11 October 2020 - 15 October 2020.
 - . 2019 22nd International Conference on Electrical Machines and Systems (ICEMS) (pp 1-6), 11 August 2019 - 14 August 2019.
 - . 2019 22nd International Conference on Electrical Machines and Systems (ICEMS) (pp 1-6), 11 August 2019 - 14 August 2019.
 - . 2019 22nd International Conference on Electrical Machines and Systems (ICEMS) (pp 1-6), 11 August 2019 - 14 August 2019.
 - . 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 119-126), 12 May 2019 - 15 May 2019.
 - . 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 615-622), 12 May 2019 - 15 May 2019.
 - . 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 1222-1227), 12 May 2019 - 15 May 2019.
 - . 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (pp 104-111), 12 May 2019 - 15 May 2019.
 - Losses in Different Doubly Salient Synchronous Reluctance Machines with Current Harmonic Injection. 2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) (pp 4860-4865)
 - . 2018 IEEE Energy Conversion Congress and Exposition (ECCE). Portland, USA, 23 September 2018 - 23 September 2018.
 - . 2016 XXII International Conference on Electrical Machines (ICEM), 4 September 2016 - 7 September 2016.
 - . Proceedings: 2016 XXII International Conference on Electrical Machines (ICEM), 4 September 2016 - 9 September 2016.
 - . Proceedings: 2016 XXII International Conference on Electrical Machines (ICEM), 4 September 2016 - 7 September 2016.
 - . 2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER) (pp 1-9), 6 April 2016 - 8 April 2016.
 - . 2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER) (pp 1-8), 6 April 2016 - 8 April 2016.
 - . 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) (pp 6 .-6 .)
 - . 2015 IEEE Magnetics Conference (INTERMAG) (pp 1-1), 11 May 2015 - 15 May 2015.
 - . 2015 IEEE International Conference on Industrial Technology (ICIT) (pp 658-663), 17 March 2015 - 19 March 2015.
 - . 2015 IEEE International Conference on Industrial Technology (ICIT) (pp 664-670), 17 March 2015 - 19 March 2015.
 - . 2014 International Conference on Electrical Machines (ICEM) (pp 2212-2217), 2 September 2014 - 5 September 2014.
 - . 2014 International Conference on Electrical Machines (ICEM) (pp 1146-1152), 2 September 2014 - 5 September 2014.
 - Comparative study of vibration and acoustic noise between classical and mutually coupled switched reluctance motors (pp 2955-2960-2955-2960)
 - Model and control of a hybrid excitation flux switching machine for torque ripple reduction. ELECTRIMACS 2011. University of Cergy-Pontoise Cergy-Pontoise, France, 6 June 2011 - 8 June 2011.
 - Double and single layers flux-switching permanent magnet motors: Fault tolerant model for critical applications
 - Design of double salient interior permanent magnet machine based on mutually coupled reluctance machine for increasing the torque density and flux-weakening capability (pp 1253-1258-1253-1258)
 - Fault diagnosis using vibration measurements of a flux-switching permanent magnet Motor (pp 2091-2096-2091-2096)
 - Comparative study of switched reluctance motors performances for two current distributions and excitation modes (pp 4047-4052-4047-4052)
 - A New Method of Current Density Distribution for Switched Reluctance Machine to Increase Average output Torque. PCIM 2009. Shanghai, China
 
Patents
- Multi-winding set fractional slot synchronous machine. Appl. 18 Oct 2023.
 
Presentations
- Recent Development of Modular Machines. AMRC Knowledge Transfer Centre Advanced Manufacturing Park, Brunel Way, Catcliffe, Rotherham S6.
 - Ferrofluid Cooling for High Power Dense PM Machines. UK MagSoc seminar on "Electromagnetic Systems A Multiphysics Problem" at ZF Automotive UK Limited .
 
Other
- Thermomagnetic cooling for high power / torque density electrical machines. Mag壅翌腦瞳, 2024(1), 26-28.
 
 
- Grants
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September 2020 - August 2022
- Sponsor: EPSRC
 - Title: Advanced Thermomagnetic Cooling for Ultrahigh Power Density Electrical Machines
 - PI
 
January 2019 - December 2023
- Sponsor: Offshore Renewable Catapult
 - Title: Powertrain Research Hub
 - Co-I
 
April 2019 - September 2027
- Sponsor: EPSRC
 - Title: EPSRC Centre for Doctoral Training in Offshore Wind Energy and the Environment (AURA CDT)
 - EEE lead
 
- July 2017 - June 2019 
- Sponsor: Innovate UK
 - Title: Inverter integrated machine for low carbon vehicles
 - Co-I
 
 July 2017 - June 2019
- Sponsor: Innovate UK
 - Title: Development of novel power tool motors - KTP
 - PI
 
Oct 2017 - Sept 2022
- Sponsor: EPSRC
 - Title: Siemens Wind Power: Prosperity Partnerships
 - Co-I
 
Oct 2014 - Oct 2016
- Sponsor: Innovate UK
 - Title: KTP - Cobham CTS Ltd
 - Co-I
 
Dec 2015 - Feb 2016
- Sponsor: Siemens-Gamesa
 - Title: Investigation of HTS generator for 10-20 MW wind turns and PhD funding
 - Co-I
 
Sep 2016 - Aug 2017
- Sponsor: CSR ZHUZHOU INSTITUTE CO LTD
 - Title: CRRC Research Centre (Phase III)
 - Co-I
 
 
- Teaching activities
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- Module Leader of EEE 305 "Machine Design"
 - Module Leader of EEE6204 "Permanent Magnet Machines and Actuators"
 
 
- Professional activities and memberships
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- AMPERE MSc Administrator
 - Departmental Exam Officer
 
 
- Research students
 Student Degree Status Primary/Secondary Ma X PhD Graduated Primary Ren B PhD Graduated Primary Taras P PhD Graduated Primary Zhang K PhD Graduated Primary Zhou R PhD Graduated Primary Kana Padinharu D PhD Graduated Primary