Imperial College London

Professor Tim Green, FREng

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Academic Leader for Sustainability, Professor



+44 (0)20 7594 Website CV




1107EElectrical EngineeringSouth Kensington Campus





My  research focuses on the analysis and technology to develop a zero carbon electricity supply system that is able to accommodate variable renewable sources and new widespread electric vehicle charging while still delivering a cost effective and very reliable service. My research specialisation is in power electronics for use in power systems and presently I focus on the control, stability and protection of power systems with very high penetration of inverter-based resources.

Previously, I contributed  converter designs for HVDC that reduce losses while also providing control functions assist AC system integration and, in distribution networks, pioneered the use of soft open points and the study of stability of microgrids.

My work has been supported by EPSRC, Hitachi Energy, National Grid ESO and UK Power Networks.

I teach an introductory module in power engineering to Electrical and Electronic Engineering students and parts of specialist Masters modules

I am a fellow of the Royal Academy of Engineering, the Institute of Electrical and Electronics Engineers, the Institution of Engineering and Technology and the Chinese Society for Electrical Engineering.

Selected Publications

Journal Articles

Li Y, Gu Y, Green T, 2022, Revisiting grid-forming and grid-following inverters: a duality theory, IEEE Transactions on Power Systems, Vol:37, ISSN:0885-8950, Pages:4541-4554

Gu Y, Green T, 2022, Power system stability with a high penetration of inverter based resources, Proceedings of the IEEE, ISSN:0018-9219

Zhu Y, Gu Y, Li Y, et al., 2021, Participation analysis in impedance models: the grey-box approach for power system stability, IEEE Transactions on Power Systems, Vol:37, ISSN:0885-8950, Pages:343-353

Gu Y, Bottrell N, Green TC, 2018, Reduced-order models for representing converters in power system studies, IEEE Transactions on Power Electronics, Vol:33, ISSN:0885-8993, Pages:3644-3654

Merlin MMC, Soto-Sanchez D, Judge PD, et al., 2017, The extended overlap alternate arm converter: a voltage source converter with DC fault ride-through capability and a compact design, Ieee Transactions on Power Electronics, Vol:33, ISSN:1941-0107, Pages:3898-3910

Barklund E, Pogaku N, Prodanovic M, et al., 2008, Energy Management in Autonomous Microgrid Using Stability-Constrained Droop Control of Inverters, IEEE Transactions on Power Electronics, Vol:23, ISSN:0885-8993, Pages:2346-2352


Merlin MMC, Green TC, Mitcheson PD, et al., 2010, A New Hybrid Multi-Level Voltage-Sourced Converter with DC Fault Blocking Capability, IET Conference on AC/DC Transmission

More Publications