Power dense converters

60 kW DC-DC converter
60 kW DC-DC converter

One of the bottlenecks limiting the development of electric vehicles and more-electric-aircraft is the size and weight of the power electronic equipment that is needed to convert electrical energy between different voltage levels, for example between a battery or fuel cell and the traction system.

The Power Conversion Group is devising new power-dense converter topologies using the latest power electronic devices, advanced magnetic materials and high-speed control. Funding sources include the EPSRC Centre for Power Electronics, the EPSRC PowerGaN Programme Grant and industrial collaboratorsRolls-Royce plc and Lyra Electronics.

Research focus

  • Exploitation of new semiconductor technologies (SiC and GaN)
  • High-frequency converter topologies
  • Smaller magnetic components with more effective thermal management
  • Compact circuit interconnections
  • High speed digital control

Key applications

  • More-electric aircraft
  • Electric and hybrid vehicles
  • Battery charging systems
  • Photovoltaic grid interface converters

Collaboration with industry

The Group has on-going collaborations with Rolls-Royce plc and Lyra Electronics, whilst Prodrive are working on the commercialisation of an automotive DC-DC converter system developed as part of a recent collaborative project.

Research centres and institutes

Latest publications

  • Ahmed M.R., Calderon-Lopez G., Bryan F., Todd R., Forsyth A.J., "Soft-switching SiC interleaved boost converter," IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 941-947, 2015, doi: 10.1109/APEC.2015.7104462
  • Murillo Carrasco L.C., Forsyth A.J., "Energy analysis and performance evaluation of GaN cascode switches in an inverter leg configuration," IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 2424-2431, 2015, doi: 10.1109/APEC.2015.7104688
  • Calderon-Lopez G., Forsyth A.J., Gordon D.L., McIntosh J.R., "Evaluation of SiC BJTs for High-Power DC–DC Converters," IEEE Transactions on Power Electronics, vol.29, no.5, pp. 2474-2481, 2014, doi: 10.1109/TPEL.2013.2273293

People

Academic Staff:  Dr Rebecca ToddProf Andrew Forsyth

Research team: 6 postdoctoral research associates and 4 PhD students.

Please contact one of the academic staff for further details of current research activity.

 

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