Skip to main content

Research Repository

Advanced Search

All Outputs (822)

Noise levels and noise perception from small and micro wind turbines (2013)
Journal Article
Taylor, J., Eastwick, C., Lawrence, C., & Wilson, R. (in press). Noise levels and noise perception from small and micro wind turbines. Renewable Energy, 55, https://doi.org/10.1016/j.renene.2012.11.031

Noise concerns frequently pose a barrier to widespread implementation of wind turbines and while the perception of noise from large turbines has been investigated, there is a relative gap in the research for small and micro wind turbines. This paper... Read More about Noise levels and noise perception from small and micro wind turbines.

User requirements for the development of smartphone self-reporting applications in healthcare (2013)
Conference Proceeding
Craven, M. P., Selvarajah, K., Miles, R., Schnädelbach, H., Massey, A., Vedhara, K., …Crowe, J. (2013). User requirements for the development of smartphone self-reporting applications in healthcare. In Human-Computer Interaction. Applications and Services. https://doi.org/10.1007/978-3-642-39262-7_5

Two case studies of the development of Smartphone self-reporting mHealth applications are described: a wellness diary for asthma management combined with Bluetooth pulse oximeter and manual peak flow measurements; and a questionnaire for ecological a... Read More about User requirements for the development of smartphone self-reporting applications in healthcare.

Native Apps versus Web Apps: which is best for healthcare applications? (2013)
Journal Article
Selvarajah, K., Craven, M. P., Massey, A., Crowe, J., Vedhara, K., & Raine-Fenning, N. (2013). Native Apps versus Web Apps: which is best for healthcare applications?. Lecture Notes in Artificial Intelligence, 8005, https://doi.org/10.1007/978-3-642-39262-7_22

Smartphone applications (Apps) provide a new way to deliver healthcare, illustrated by the fact that healthcare Apps are estimated to make up over 30% of new Apps currently being developed; with this number seemingly set to increase as the benefits b... Read More about Native Apps versus Web Apps: which is best for healthcare applications?.

Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom (2012)
Journal Article
Townsend, C. D., Summers, T. J., Vodden, J. A., Watson, A. J., Betz, R. E., & Clare, J. C. (2013). Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom. IEEE Transactions on Power Electronics, 28(7), https://doi.org/10.1109/TPEL.2012.2219593

This paper further develops a Model Predictive Control (MPC) scheme which is able to exploit the large number of redundant switching states available in a multi-level H-bridge StatCom (H-StatCom). The new sections of the scheme provide optimised meth... Read More about Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom.

Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+ (2012)
Journal Article
Sójka, L., Tang, Z., Zhu, H., Bereś-Pawlik, E., Furniss, D., Seddon, A. B., …Sujecki, S. (2012). Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+. Optical Materials Express, 2(11), https://doi.org/10.1364/OME.2.001632

We present a study of chalcogenide glass fiber lasers doped with Dy3+, Pr3+ or Tb3+ that would operate in the mid-infrared wavelength range. A set of chalcogenide glass samples doped with different concentrations of rare earth ions is fabricated.... Read More about Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+.

Space-vector-modulated three-level inverters with a single Z-source network (2012)
Journal Article
Effah, F. B., Wheeler, P., Clare, J. C., & Watson, A. J. (in press). Space-vector-modulated three-level inverters with a single Z-source network. IEEE Transactions on Power Electronics, 28(6), https://doi.org/10.1109/TPEL.2012.2219627

The Z-source inverter is a relatively recent converter topology that exhibits both voltage-buck and voltage-boost capability. The Z-source concept can be applied to all dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion whether two-level or... Read More about Space-vector-modulated three-level inverters with a single Z-source network.

Engaging with economic evaluation methods: insights from small and medium enterprises in the UK medical devices industry after training workshops (2012)
Journal Article
Craven, M. P., Allsop, M. J., Morgan, S. P., & Martin, J. L. (2012). Engaging with economic evaluation methods: insights from small and medium enterprises in the UK medical devices industry after training workshops. Health Research Policy and Systems, 10(29), https://doi.org/10.1186/1478-4505-10-29

Background With increased governmental interest in value assessment of technologies and where medical device manufacturers are finding it increasingly necessary to become more familiar with economic evaluation methods, the study sought to explore... Read More about Engaging with economic evaluation methods: insights from small and medium enterprises in the UK medical devices industry after training workshops.

Achieving the desired transformer leakage inductance necessary in DC-DC converters for energy storage applications (2012)
Conference Proceeding
De, D., Klumpner, C., Rashed, M., Patel, C., Kulsangcharoen, P., & Asher, G. (2012). Achieving the desired transformer leakage inductance necessary in DC-DC converters for energy storage applications. In 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012). https://doi.org/10.1049/cp.2012.0212

This paper presents a cost effective winding design and evaluation of a medium frequency isolation transformer typically used in bidirectional isolated DC/DC converters. Since leakage inductance and winding resistance of a high frequency transformer... Read More about Achieving the desired transformer leakage inductance necessary in DC-DC converters for energy storage applications.

A user-centred approach to requirements elicitation in medical device development: a case study from an industry perspective (2012)
Journal Article
Martin, J. L., Clarke, D. J., Crowe, J. A., Morgan, S. P., & Murphy, E. (2012). A user-centred approach to requirements elicitation in medical device development: a case study from an industry perspective. Applied Ergonomics, 43(1), https://doi.org/10.1016/j.apergo.2011.05.002

The healthcare industry is dependent upon the provision of well designed medical devices. To achieve this it is recommended that user-centred design should begin early, and continue throughout device development. This is a challenge, particularly f... Read More about A user-centred approach to requirements elicitation in medical device development: a case study from an industry perspective.

The use of vignettes for conducting healthcare research (2012)
Book Chapter
Keane, D., Lang, A. R., Craven, M. P., & Sharples, S. (2012). The use of vignettes for conducting healthcare research. In V. G. Duffy (Ed.), Advances in human aspects of healthcare. San Franciso, USA: CRC Press

Improving healthcare requires engaging with clinicians and patients in order to better understand their needs and expectations. Research methods that are used to conduct healthcare research are selected on the basis of study objectives and practicali... Read More about The use of vignettes for conducting healthcare research.

Can health economics aid decision making in healthcare innovation in academia? (2012)
Journal Article
Lu, B., Martin, J. L., Craven, M. P., & Morgan, S. P. (2012). Can health economics aid decision making in healthcare innovation in academia?. International Journal of Technology Transfer and Commercialisation, 11(1/2), https://doi.org/10.1504/IJTTC.2012.043911

Health economics is extensively used by reimbursement agencies to make decisions on whether to adopt new medical technologies. It is also used by the healthcare industry as an aid to decision making during product development. This paper proposes tha... Read More about Can health economics aid decision making in healthcare innovation in academia?.

A thermal improvement technique for phase windings of electrical machines (2011)
Journal Article
Galea, M., Gerada, C., Raminosa, T., & Wheeler, P. (2012). A thermal improvement technique for phase windings of electrical machines. IEEE Transactions on Industry Applications, 48(1), https://doi.org/10.1109/TIA.2011.2175470

In electrical machines, a higher torque/force density can usually be achieved by increasing the current density in the windings. However, the resulting increase in copper losses leads to higher temperatures in the coils, especially in the centre of t... Read More about A thermal improvement technique for phase windings of electrical machines.

A reconfigurable real-time compressive-sampling camera for biological applications (2011)
Journal Article
Fu, B., Pitter, M. C., & Russell, N. A. (2011). A reconfigurable real-time compressive-sampling camera for biological applications. PLoS ONE, 6(10), Article e26306. https://doi.org/10.1371/journal.pone.0026306

Many applications in biology, such as long-term functional imaging of neural and cardiac systems, require continuous high-speed imaging. This is typically not possible, however, using commercially available systems. The frame rate and the recording t... Read More about A reconfigurable real-time compressive-sampling camera for biological applications.

Assessing the benefits of hybrid cycloconverters (2011)
Journal Article
Xu, T., Klumpner, C., & Clare, J. (2011). Assessing the benefits of hybrid cycloconverters. IEEE Transactions on Industrial Electronics, 59(1), https://doi.org/10.1109/TIE.2011.2165194

Power converters consisting of naturally commutated thyristors such as cycloconverters and current source inverters were the first to be used in driving electrical motors with variable speed, but now, due to their inferior performance compared to for... Read More about Assessing the benefits of hybrid cycloconverters.

Characterization of energy storage devices for constant power applications (2010)
Conference Proceeding
Kulsangcharoen, P., Klumpner, C., Rashed, M., & Asher, G. (2010). Characterization of energy storage devices for constant power applications. In IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON.2010.5675401

In this paper, a few known characterization techniques for supercapacitors have been evaluated with the purpose of being able to predict the roundtrip efficiency of an energy storage system under constant power application. It is found that the user... Read More about Characterization of energy storage devices for constant power applications.

High performance multilevel converter topology for interfacing energy storage systems with medium voltage grids (2010)
Conference Proceeding
Rashed, M., Klumpner, C., & Asher, G. (2010). High performance multilevel converter topology for interfacing energy storage systems with medium voltage grids. In IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON.2010.5675400

This paper proposes a high performance hybrid cascaded H-Bridge (HB) Multilevel Converter (MLC) with integrated Series Active Power Filter SAPF for interfacing energy storage systems with medium voltage grids. Isolated DC sources comprised of modular... Read More about High performance multilevel converter topology for interfacing energy storage systems with medium voltage grids.

Hybrid cascaded multilevel converter with integrated series Active Power Filter for interfacing energy storage system to medium voltage grid (2010)
Conference Proceeding
Rashed, M., Klumpner, C., & Asher, G. (2010). Hybrid cascaded multilevel converter with integrated series Active Power Filter for interfacing energy storage system to medium voltage grid. In The 2010 International Power Electronics Conference - ECCE ASIA -. https://doi.org/10.1109/IPEC.2010.5543461

This paper presents a new control strategy for a high performance hybrid cascaded H-Bridge HB multilevel converter with integrated series Active Power Filter Stage APFS. Unequal DC voltage sources are used to energise the converter's HBs. This offers... Read More about Hybrid cascaded multilevel converter with integrated series Active Power Filter for interfacing energy storage system to medium voltage grid.

Deploying a spreadsheet tool for early economic value assessment of medical device innovations with healthcare decision makers (2009)
Journal Article
Craven, M. P., Morgan, S. P., Crowe, J. A., & Lu, B. (2009). Deploying a spreadsheet tool for early economic value assessment of medical device innovations with healthcare decision makers. International Journal of Healthcare Management, 2(3), https://doi.org/10.1179/175330309791011055

Early stage evaluation of medical device innovations is important for healthcare decision-makers as much as for manufacturers, meaning that a wider application of a basic cost-effectiveness analysis is becoming necessary outside the usual expert base... Read More about Deploying a spreadsheet tool for early economic value assessment of medical device innovations with healthcare decision makers.

A cost-effective solution to power the gate drivers of multilevel inverters using the bootstrap power supply technique (2009)
Conference Proceeding
Klumpner, C., & Shattock, N. (2009). A cost-effective solution to power the gate drivers of multilevel inverters using the bootstrap power supply technique. In 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition. https://doi.org/10.1109/APEC.2009.4802910

Multilevel inverters are traditionally seen as a step forward in DC/AC conversion, providing more output voltage levels, better quality of the generated waveform and lower switching losses than the two-level and can process higher voltages with a giv... Read More about A cost-effective solution to power the gate drivers of multilevel inverters using the bootstrap power supply technique.

Experimental evaluation of hybrid cycloconverters (2009)
Conference Proceeding
Klumpner, C., Xu, T., & Clare, J. C. (2009). Experimental evaluation of hybrid cycloconverters. In 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition. https://doi.org/10.1109/APEC.2009.4802737

Power converters consisting of naturally commutated thyristors such as cycloconverters and current source inverters were the first used in driving electrical motors with variable speed but now due to their inferior performance compared to forced comm... Read More about Experimental evaluation of hybrid cycloconverters.