Research

the_long_group_research_chart.jpg

Device
slide11.jpg	WBG device characterisation  High bandwidth differential voltage sensing (DC to 1 GHz) High bandwidth current sensing (DC to 1 GHz) Device modelling and switching characterisation
slide10.jpg	WBG power module and packaging Ultra-low power loop inductance design (<1 nH) Polymer substrate power PCBs Integrated gate drives and sensors
slide12.jpg	Soft-switching and device paralleling  ZVS of paralleled WBG devices  Asynchronous switching of paralleled devices  Thermal and current balancing between paralleled devices

Converter
slide14.jpg	DC-DC converters  Isolated DC-DC converter topologies and control  Control and magnetic design of Dual Active Bridge Non-isolated DC-DC converter topologies and control
slide13.jpg	AC-DC converters  LCL filter design and optimisation  Power supply units  EV traction inverter
slide5.jpg	Converter-on-chip and packaging Switching-capacitor converter topologies  Integration of passive components  High power density 48V DC-DC converters

System
slide4.jpg	Transport electrification EV on-board charger (OBC) SiC based EV traction inverter  Propulsion drives for ships
slide6.jpg	Inductive Power Transfer (IPT) Nanocrystalline alloy (FeCuNbSiB) cores for ferrite-less IPT systems Thermal and reliability of IPT systems Efficiency increase and misalignment tolerance
slide8.jpg	DC distribution networks High power semiconductor DC power systems  DC network stability and control  Energy storage connection

Research Grants: 

• 2023-2024 UK Engineering and Physical Science Research Council (EPSRC) IMPACT ACCELERATION ACCOUNT, 'High bandwidth current sensor for high speed power electronics' (G116766), Principal Investigator, £146,097

• 2022-2025 Industrial sponsorship from NIO Ltd, 'POWER ELECTRONIC MODULE DESIGN AND RELIABILITY ANALYSIS FOR EV APPLICATIONS' (G114992), Principal Investigator, £381,595

• 2021-2022 Industrial sponsorship from the Centre for Advanced Photonics and Electronics (CAPE) and Electronics, ‘High Efficiency VRM Electromagnetic Technology Research’ (G11154), Principal Investigator, £117,583

• 2020-2021 Industrial sponsorship from the Centre for Advanced Photonics and Electronics (CAPE) and Electronics, ‘High Efficiency DC-DC converter’ (G108175), Principal Investigator, £139,963

• 2020-2022 UK Engineering and Physical Science Research Council (EPSRC), ’Optimal passive filter topology for advanced power electronics converters’, Principal Investigator, £142,696

• 2020-2022 Industrial sponsorship from the CBMM, ’Nanocrystalline alloy (FeCuNbSiB) based magnetic cores in high power Inductive Power Transfer (IPT) for Wireless EV charging’(G105565), Principal Investigator, £338,344

• 2020-2022 UK Engineering and Physical Science Research Council (EPSRC) Global Challenges Research Fund (GCRF): ’Affordable Perovskite Solar Irrigation Systems for Small-holder Farmers in Ethiopia (APSISSFE)’(EP/T02030X/1), Co-Investigator, entitled: £328,358, total: £938,246

• 2018-2020 UK Engineering and Physical Science Research Council (EPSRC): New Investigator Award, ’Enhancement of Inductive Power Transfer (IPT) for Wireless EV Charging’(EP/R036799/1), Principal Investigator, £261,765

• 2018-2020 Innovate UK: Innovation in Vehicle-to-Grid (V2G) Systems R&D Grants, ’Universal modular Vehicleto-Grid bi-directional on-board charger with SiC technologies’(TS/R016968/1), Principal Investigator (Academic), £264,716

• 2018-2020 Industrial sponsorship from the SAIC Motor UK Technical Centre Ltd, ’Next generation power electronics technologies in EVs’(RG96662), Principal Investigator, £294,620

• 2018-2019 Industrial sponsorship from the Wuxi Silent Electric System Technology Ltd, ’Supercapacitor based energy storage in electric systems for ships’ (RG95400), Principal Investigator, £55,579

• 2019 EPSRC Global Challenges Research Fund (GCRF) Internal Grant, ’A low cost high performance solar inverter for Tanzania’(G100049), Principal Investigator, £80,000

• 2017-2018 EPSRC Global Challenges Research Fund (GCRF) Internal Grant, ’A low cost high performance solar inverter’(RG92550), Principal Investigator, £26,370

• 2017-2018 Issca Newton Trust, ’Intelligent Transformers for Future Internet of Energy’ (RG74916), Principal Investigator, £25,000