Imperial College London

Professor Tim Green, FREng

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor of Power Engineering



+44 (0)20 7594 Website CV




Energy Futures Lab, Electrical Eng BuildingElectrical 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-ABB, National Grid and UK Power Networks.

I teach an introductory module in power engineering to Electrical and Electronic Engineering students and wind energy technology to the MSc in Sustainable Energy Futures.

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

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

Judge PD, Merlin MMC, Green TC, et al., 2018, Thyristor-Bypassed Submodule Power-Groups for Achieving High-Efficiency, DC Fault Tolerant Multilevel VSCs, IEEE Transactions on Power Delivery, Vol:33, ISSN:0885-8977, Pages:349-359

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

Merlin MMC, Green TC, 2015, Cell capacitor sizing in multilevel converters: cases of the modular multilevel converter and alternate arm converter, IET Power Electronics, Vol:8, ISSN:1755-4535, Pages:350-360

Zhang X, Green TC, Junyent-Ferre A, 2015, A New Resonant Modular Multilevel Step-Down DC-DC Converter with Inherent-Balancing, IEEE Transactions on Power Electronics, Vol:30, ISSN:0885-8993, Pages:78-88

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

Skea J, Anderson D, Green T, et al., 2008, Intermittent renewable generation and maintaining power system reliability, IET Generation Transmission & Distribution, Vol:2, ISSN:1751-8687, Pages:82-89


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