Research

 

     Advanced modelling of superconductors

We are using a number of novel techniques to model high temperature superconductors in details. These include using Finite Element Method, integration method and minimisation method. Recent publications include

W. Yuan, A. M. Campbell and T. A. Coombs, A model to calculate the AC loss of second-generation high temperature superconductor pancake coils, Superconductor Science and Technology, 22(7):075028, 2009

3D modeling of high-Tc superconductors by finite element software, M Zhang, TA Coombs, Superconductor Science and Technology 25 (1), 015009

 

       Superconducting energy storage systems (SMES)

We are developing SMES systems using 2G HTS conductors. They can be used alone as dynamic voltage restorer (DVR) or be hybridised with batteries as long term energy storage solutions. A hardware test platform is available to test the DVR functionality of the storage devices. This work is funded by EPSRC and RAEng. Recent publications include

Design and test of a superconducting magnetic energy storage (SMES) coil, Applied Superconductivity, IEEE Transactions on 20 (3), 1379-1382

Design, dynamic simulation and construction of a hybrid HTS SMES (high-temperature superconducting magnetic energy storage systems) for Chinese power grid, Energy 51, 184-192

 

       Superconducting cables

Superconducting cables are an emerging and attractive technology for electrical power transmission and distribution due to significant developments of high-temperature superconductors in the past decade. What makes superconducting cables highly desirable for electricity transportation are their high current density and low energy loss. We have developed a multiphysics modelling tool as well as a complete design methodology for superconducting cables in both electricity distribution and transportation applications. This work is funded by RAEng and Airbus. Recent publications include:

Electric Measurement of the Critical Current, AC Loss, and Current Distribution of a Prototype HTS Cable, Applied Superconductivity, IEEE Transactions on 24 (3), 1-4

An experimental investigation of critical current and current distribution behavior in parallel placed HTS tapes, IEEE Transactions on Applied Superconductivity

       Superconducting fault current limiter (SFCL)

 

     Superconducting machine

     Wireless power transfer

The use of superconductors in wireless power transfer will produce a step-change increase in efficiency, enabling a range of high power applications. It is particularly attractive for charging electric vehicles, allowing smaller, cheaper and lower weight batteries. It can also be deployed as in-road chargers for public transport and essentially allows for electric cars to drive an unlimited range, saving millions in fuel costs and reducing carbon emissions. This work is funded by the Royal Society. Recent publications include:

Wireless Power Transfer with HTS Transmitting and Relaying Coils, IEEE Transactions on Applied Superconductivity

       High-field magnets