Dr Guang-Jin Li
Tel: +44 (0)114 22 25132
Research Group: Electrical Machines & Drives
I graduated from Wuhan University (China) with a Bachelor’s degree in Electrical Engineering and Automation in 2007. Then I received my Master degree in Electric Power Systems from the Université de Paris XI, Supélec and École Normale Supérieure de Cachan (ENS Cachan), France, in 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 November 2017, both 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.