Research Repository

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A series hybrid “real inertia” energy storage system (2018)
Journal Article
Rouse, J., Garvey, S., Cárdenas, B., & Davenne, T. (2018). A series hybrid “real inertia” energy storage system. Journal of Energy Storage, 20, (1-15). doi:10.1016/j.est.2018.08.006. ISSN 2352-152X

The wide scale market penetration of numerous renewable energy technologies is dependent, at least in part, on developing reliable energy storage methods that can alleviate concerns over potentially interrupted and uncertain supplies. Many challenges... Read More

Lowering the cost of large-scale energy storage: high temperature adiabatic compressed air energy storage (2017)
Journal Article
Cárdenas, B., Pimm, A. J., Kantharaj, B., Simpson, M., Garvey, J., & Garvey, S. D. (2017). Lowering the cost of large-scale energy storage: high temperature adiabatic compressed air energy storage. Propulsion and Power Research, 6(2), doi:10.1016/j.jppr.2017.06.001. ISSN 2212-540X

Compressed air energy storage is an energy storage technology with strong potential to play a significant role in balancing energy on transmission networks, owing to its use of mature technologies and low cost per unit of storage capacity. Adiabatic... Read More

Thermal design of linear induction and synchronous motor for electromagnetic launch of civil aircraft (2017)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2017). Thermal design of linear induction and synchronous motor for electromagnetic launch of civil aircraft. IEEE Transactions on Plasma Science, 45(7), doi:10.1109/TPS.2017.2697941. ISSN 0093-3813

The engine size of modern passenger transport aircraft is principally determined by take-off conditions, since initial acceleration requires maximum engine power. An elec¬tromagnetic launch (EML) system could provide some or all of the energy require... Read More

Gas-to-gas heat exchanger design for high performance thermal energy storage (2017)
Journal Article
Cardenas, B., Garvey, S. D., Kantharaj, B., & Simpson, M. (2017). Gas-to-gas heat exchanger design for high performance thermal energy storage. Journal of Energy Storage, 14(2), doi:10.1016/j.est.2017.03.004. ISSN 2352-152X

The mathematical modelling and optimization of a gas-to-gas heat exchanger with a non-constant cross sectional area is presented. The design of the cross sectional area of the heat exchanger analyzed is based on an hexagonal mesh, which would be high... Read More

Reducing weight and fuel consumption of civil aircraft by electromagnetic launch (2017)
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., Polenta, V., Garvey, S. D., & Morvan, H. (2017). Reducing weight and fuel consumption of civil aircraft by electromagnetic launch

Electromagnetic launch systems have been proposed for military applications to accelerate jet planes on aircraft carriers. This paper proposes the implementation of similar technology to aid civil aircraft take-off, which can provide significant econ... Read More

Parametric investigation of a non-constant cross sectional area air to air heat exchanger (2016)
Journal Article
Cárdenas, B., Garvey, S., Kantharaj, B., & Simpson, M. (2017). Parametric investigation of a non-constant cross sectional area air to air heat exchanger. Applied Thermal Engineering, 113, doi:10.1016/j.applthermaleng.2016.10.209. ISSN 1359-4311

The present article addresses the design, mathematical modelling and analysis of a novel highly exergy-efficient air to air heat exchanger. An intricate design based on an hexagonal mesh is proposed for the cross-sectional area of the heat exchanger... Read More

Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications (2016)
Conference Proceeding
Ahumada, C., Garvey, S. D., Yang, T., Kulsangcharoen, P., Wheeler, P., & Morvan, H. (2016). Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications

This paper studies strategies to minimize the electromechanical interaction (EMI) within aircraft power systems. With the growth of electrical power on-board aircraft, the interaction between the electrical systems and the engine core will become sig... Read More

Design study and scaled experiment of induction and synchronous motor for civil application of electromagnetic aircraft launch system (2016)
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2016). Design study and scaled experiment of induction and synchronous motor for civil application of electromagnetic aircraft launch system

The engine size of modern passenger transport aircraft is principally determined by take-off conditions, since initial acceleration requires maximum engine power. An Electromagnetic Launch (EML) system could provide some or all of the energy required... Read More

Superconducting electromagnetic launch system for civil aircraft (2016)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2016). Superconducting electromagnetic launch system for civil aircraft. IEEE Transactions on Applied Superconductivity, 26(8), doi:10.1109/TASC.2016.2598772. ISSN 1051-8223

This paper considers the feasibility of different superconducting technologies for electromagnetic launch (EML) to assist civil aircraft take-off. EML has the potential of reducing the required runway length by increasing aircraft acceleration. Expen... Read More

Novel stiffeners exploiting internal pressurisation to enhance buckling behaviour under bending loads (2016)
Journal Article
Polenta, V., Garvey, S. D., Chronopoulos, D., Long, A. C., & Morvan, H. (2016). Novel stiffeners exploiting internal pressurisation to enhance buckling behaviour under bending loads. Thin-Walled Structures, 105, doi:10.1016/j.tws.2016.04.002. ISSN 0263-8231

The paper proposes a novel type of stiffener designed to bear bending loads by exploiting internal pressure effects. The stiffener is made of two adjacent thin-walled pipes (r/t≥50) jointed with a connecting strip. Such a structure is shown to have h... Read More

Electromagnetic launch systems for civil aircraft assisted take-off (2015)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2015). Electromagnetic launch systems for civil aircraft assisted take-off. Archives of Electrical Engineering, 64(4), doi:10.1515/aee-2015-0039. ISSN 2300-2506

This paper considers the feasibility of different technologies for an electromagnetic launcher to assist civil aircraft take-off. This method is investigated to reduce the power required from the engines during initial acceleration. Assisted launch h... Read More

Economic analysis of a hybrid energy storage system based on liquid air and compressed air (2015)
Journal Article
Pimm, A. J., Garvey, S. D., & Kantharaj, B. (2015). Economic analysis of a hybrid energy storage system based on liquid air and compressed air. Journal of Energy Storage, 4, doi:10.1016/j.est.2015.09.002. ISSN 2352-1538

A hybrid energy storage system is defined here as one which comprises two series-connected energy stores (using different storage technologies), only one of which is connected to the grid. Such a plant can take advantage of certain characteristics of... Read More

Compressed air energy storage with liquid air capacity extension (2015)
Journal Article
Kantharaj, B., Garvey, S. D., & Pimm, A. J. (2015). Compressed air energy storage with liquid air capacity extension. Applied Energy, 157, doi:10.1016/j.apenergy.2015.07.076. ISSN 0306-2619

As renewable electricity generation capacity increases, energy storage will be required at larger scales. Compressed Air Energy Storage (CAES) at large scales, with effective management of heat, is recognised to have potential to provide affordable g... Read More

Thermodynamic analysis of a hybrid energy storage system based on compressed air and liquid air (2014)
Journal Article
Kantharaj, B., Garvey, S. D., & Pimm, A. J. (2015). Thermodynamic analysis of a hybrid energy storage system based on compressed air and liquid air. Sustainable Energy Technologies and Assessments, 11, doi:10.1016/j.seta.2014.11.002. ISSN 2213-1388

As renewable electricity generation capacity increases, energy storage will be required at larger scales. Compressed air energy storage at large scales, with effective management of heat, is recognised to have potential to provide affordable grid-sca... Read More

Modal Control of Vibration in Rotating Machines and Other Generally Damped Systems (2006)
Conference Proceeding
Houlston, P. R., Garvey, S. D., & Popov, A. A. (2006). Modal Control of Vibration in Rotating Machines and Other Generally Damped Systems

Second order matrix equations arise in the description of real dynamical systems. Traditional modal control approaches utilise the eigenvectors of the undamped system to diagonalise the system matrices. A regrettable consequence of this approach is t... Read More

Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing (2006)
Conference Proceeding
Houlston, P. R., Garvey, S. D., & Popov, A. A. (2006). Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing

In the context of active control of rotating machines, standard optimal controller methods enable a trade-off to be made between (weighted) mean-square vibrations and (weighted) mean-square currents injected into magnetic bearings. One shortcoming of... Read More

Superconducting and conventional electromagnetic launch system for civil aircraft assisted take-off
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., & Garvey, S. D. (in press). Superconducting and conventional electromagnetic launch system for civil aircraft assisted take-off

This paper compares three possible linear motor topologies for an electromagnetic launch system to assist civil aircraft take-off. Assisted launch of civil aircraft has the potential of reducing the required runway length, reducing noise and emission... Read More