Outputs (998)

Dead-time effects on the voltage spectrum of a PWM inverter (2013)
Journal Article
Moore, D. C., Odavic, M., & Cox, S. M. (2014). Dead-time effects on the voltage spectrum of a PWM inverter. IMA Journal of Applied Mathematics, 79(6), https://doi.org/10.1093/imamat/hxt006

An inverter converts a direct-current power supply to an alternating-current power supply. This con- version is achieved by switching the output between the inputs at high frequency. The resulting output voltage may be described by a high-frequency t... Read More about Dead-time effects on the voltage spectrum of a PWM inverter.

Fault detection for modular multilevel converters based on sliding mode observer (2013)
Journal Article
Shao, S., Wheeler, P., Clare, J. C., & Watson, A. J. (2013). Fault detection for modular multilevel converters based on sliding mode observer. IEEE Transactions on Power Electronics, 28(11), https://doi.org/10.1109/TPEL.2013.2242093

This letter presents a fault detection method for modular multilevel converters (MMC) which is capable of lo¬cating a faulty semiconductor switching device in the circuit. The proposed fault detection method is based on a sliding mode observer (SMO)... Read More about Fault detection for modular multilevel converters based on sliding mode observer.

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)
Presentation / Conference Contribution
Craven, M. P., Selvarajah, K., Miles, R., Schnädelbach, H., Massey, A., Vedhara, K., Raine-Fenning, N., & Crowe, J. User requirements for the development of smartphone self-reporting applications in healthcare. Presented at HCI International 2013: 15th International Conference

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., Benson, T. M., & 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)
Presentation / Conference Contribution
De, D., Klumpner, C., Rashed, M., Patel, C., Kulsangcharoen, P., & Asher, G. Achieving the desired transformer leakage inductance necessary in DC-DC converters for energy storage applications. Presented at 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)

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.