All Outputs (141)

Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications (2022)
Conference Proceeding
Taghvaee, H., Pitilakis, A., Tsilipakos, O., Tasolamprou, A. C., Kantartzis, N. V., Kafesaki, M., …Gradoni, G. (2022). Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications. In 2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) (X434-X436). https://doi.org/10.1109/metamaterials54993.2022.9920752

The next generation of wireless communications within the framework of 6G will be operational at the low THz frequency band. Although THz systems will dramatically enhance several performance indicators such as the data rate, spectral efficiency, and... Read More about Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications.

Subwavelength Focusing with Reflective Metasurfaces Engineered Using the Concept of Perfect Lens (2022)
Conference Proceeding
Taghvaee, H., Liu, F., Diaz-Rubio, A., & Tretyakov, S. (2022). Subwavelength Focusing with Reflective Metasurfaces Engineered Using the Concept of Perfect Lens. In 2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) (X437-X439). https://doi.org/10.1109/Metamaterials54993.2022.9920820

It is highly desirable to break the diffraction limit on the resolution of optical devices and achieve subwavelength focusing. Despite numerous solutions that have been developed throughout the years, a practical method to obtain subwavelength focusi... Read More about Subwavelength Focusing with Reflective Metasurfaces Engineered Using the Concept of Perfect Lens.

Influence of Current Collapse due to Vds Bias Effect on GaN-HEMTs Id-Vds Characteristics in Saturation Region (2022)
Conference Proceeding
Lu, X., Videt, A., Li, K., Idir, N., & al., E. (2022). Influence of Current Collapse due to Vds Bias Effect on GaN-HEMTs Id-Vds Characteristics in Saturation Region.

A new method is proposed in this paper to investigate the influence of current collapse effect on the Id-Vds characteristics of GaN-HEMTs in high voltage region based on a modified H-bridge circuit. The measured Id-Vds characteristics with and witho... Read More about Influence of Current Collapse due to Vds Bias Effect on GaN-HEMTs Id-Vds Characteristics in Saturation Region.

Cooling System Sizing using LPTN Analysis and Multiphysics Modelling for an Axial Flux Machine and Integrated Drive (2022)
Conference Proceeding
Jeffrey, A. J., Connor, P. H., Vakil, G., Evans, P., Wheeler, P., & Hart, S. (2022). Cooling System Sizing using LPTN Analysis and Multiphysics Modelling for an Axial Flux Machine and Integrated Drive. . https://doi.org/10.1109/icem51905.2022.9910820

In this paper a Lumped Parameter Thermal Network (LPTN) is proposed for a Yokeless and Segmented Armature (YASA) axial flux permanent magnet (AFPM) machine. A simulation model is used to examine the machine in isolation, with an Integrated Motor Driv... Read More about Cooling System Sizing using LPTN Analysis and Multiphysics Modelling for an Axial Flux Machine and Integrated Drive.

Investigating Synchronous Reluctance Rotor Performance for Traction Applications against a Permanent Magnet Benchmark (2022)
Conference Proceeding
Connor, P. H., Khowja, M., La Rocca, A., La Rocca, S., Zou, T., Vakil, G., …Paciura, K. (2022). Investigating Synchronous Reluctance Rotor Performance for Traction Applications against a Permanent Magnet Benchmark. . https://doi.org/10.1109/icem51905.2022.9910649

This paper investigates the potential benefits for the use of synchronous reluctance machines for traction applications. Permanent magnet machines are often used to generate the highest power densities. However, magnet use has drawbacks including tem... Read More about Investigating Synchronous Reluctance Rotor Performance for Traction Applications against a Permanent Magnet Benchmark.

Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor (2022)
Conference Proceeding
Vannini, A., Simonelli, C., Marfoli, A., Papini, L., Bolognesi, P., & Gerada, C. (2022). Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor. . https://doi.org/10.1109/icem51905.2022.9910937

Line-Start Permanent Magnet Motors are a valid alternative to conventional three-phase induction motors and wound-field synchronous machines for fixed-speed applications direct fed by the grid, targeting superior efficiency and high reliability. A ge... Read More about Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor.

Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications (2022)
Conference Proceeding
Tameemi, A., Degano, M., Di Nardo, M., Murataliyev, M., Gerada, D., Xu, Z., & Gerada, C. (2022). Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications. In 2022 International Conference on Electrical Machines (ICEM) (807-813). https://doi.org/10.1109/icem51905.2022.9910911

Permanent magnet synchronous motors are very suitable in applications demanding high power density with high performance requirements, such as in aerospace actuators. Achieving high performance targets while keeping the total weight of the electrical... Read More about Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications.

Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers (2022)
Conference Proceeding
Vannini, A., Papini, L., Marfoli, A., Gerada, C., & Bolognesi, P. (2022). Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers. In 2022 International Conference on Electrical Machines (ICEM) (2074-2080). https://doi.org/10.1109/icem51905.2022.9910897

Synchronous Homopolar Generators represent an attractive solution for the future of power generation in propulsive systems based on hybrid turbo-electric drivetrains. In fact they feature both a fully controllable excitation, similar to wound-field s... Read More about Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers.

On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor (2022)
Conference Proceeding
Hebala, A., Nuzzo, S., Connor, P. H., Gerada, C., & Galea, M. (2022). On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor. . https://doi.org/10.1109/icem51905.2022.9910866

In this paper, a study of the fault-tolerance and demagnetisation of a high-performance aircraft propulsion motor is investigated. The motor is proposed with either three or four sets of three-phase windings, while maintaining the same magnetic and t... Read More about On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor.

Comparative Analysis of Synchronous Reluctance Machine against Conventional Induction Machine for Railway Traction (2022)
Conference Proceeding
Tom, L., Khowja, M. R., Ramanathan, R., Vakil, G., & Gerada, C. (2022). Comparative Analysis of Synchronous Reluctance Machine against Conventional Induction Machine for Railway Traction. In 2022 International Conference on Electrical Machines (ICEM 2022) (69-76). https://doi.org/10.1109/ICEM51905.2022.9910767

Electrification in railway industry offers better performing trains with reduced pollution and maximised capacity. SynREL is gaining more interest as a candidate for traction application in place of IM due to its simple and robust structure. Conseque... Read More about Comparative Analysis of Synchronous Reluctance Machine against Conventional Induction Machine for Railway Traction.

Investigating the Effect of Waveform Characteristics on PDEV, PDIV and RPDIV for Glass Fibre Insulated Wire (2022)
Conference Proceeding
Naderiallaf, H., Giangrande, P., & Galea, M. (2022). Investigating the Effect of Waveform Characteristics on PDEV, PDIV and RPDIV for Glass Fibre Insulated Wire. In 2022 International Conference on Electrical Machines (ICEM 2022) (1327-1333). https://doi.org/10.1109/icem51905.2022.9910752

The trends of partial discharge extinction voltage (PDEV), partial discharge inception voltage (PDIV) and repetitive partial discharge inception voltage (RPDIV) as a function of duty cycle, frequency, and rise time are experimentally investigated in... Read More about Investigating the Effect of Waveform Characteristics on PDEV, PDIV and RPDIV for Glass Fibre Insulated Wire.

Performance Assessment of Standard Cooling Strategies for Hairpin Windings (2022)
Conference Proceeding
La Rocca, A., La Rocca, S., Zou, T., Liu, C., Moslemin, M., Gerada, C., & Cairns, A. (2022). Performance Assessment of Standard Cooling Strategies for Hairpin Windings. In 2022 International Conference on Electrical Machines (ICEM) (1163-1169). https://doi.org/10.1109/icem51905.2022.9910733

This paper aims to assess the performance of some standard cooling strategies which are commonly used in traction electric motors for electric vehicles (EVs) employing hairpin windings. The use of such type of coils does normally lead to higher power... Read More about Performance Assessment of Standard Cooling Strategies for Hairpin Windings.

Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set (2022)
Conference Proceeding
Tweedy, O. R., Akcay, Y., Giangrande, P., Galea, M., & Garvey, S. D. (2022). Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set. In 2022 International Conference on Electrical Machines (ICEM 2022) (143-149). https://doi.org/10.1109/icem51905.2022.9910689

This paper investigates the magneto-mechanical performance of a magnetically coupled, engine driven synchronous generator set exposed to a severe low voltage grid fault. A multi-physics model of a generator, coaxial magnetic coupling and diesel engin... Read More about Electromechanical Analysis of Low Voltage Faults in a Magnetically Coupled Synchronous Generator Set.

Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application (2022)
Conference Proceeding
Dave, N., Gerada, D., Vakil, G., Zhang, H., Shi, B., Zhang, F., …Gerada, C. (2022). Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application. In 2022 International Conference on Electrical Machines (ICEM) (2094-2099). https://doi.org/10.1109/ICEM51905.2022.9910584

This paper aims to present the feasibility and advantages of slotless motors for electric aircraft applications. Currently, eVTOL (electric vertical takeoff and landing) aircraft are equipped with a slotted motor with concentrated windings and an out... Read More about Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application.

Fault Tree analysis including component dependencies (2022)
Conference Proceeding
Tolo, S., & Andrews, J. (2022). Fault Tree analysis including component dependencies. In M. C. Leva, E. Patelli, L. Podofillini, & S. Wilson (Eds.), Book of Extended Abstracts for the 32nd European Safety and Reliability Conference (133-134). https://doi.org/10.1109/TR.2023.3264943

The inability of commonly used risk assessment methodologies to model component dependency is often recognised to be a barrier towards more realistic modelling of systems complexity. This is a significant limitation associated with widely adopted tec... Read More about Fault Tree analysis including component dependencies.

An Integrated Modelling Framework for Complex Systems Safety Analysis: Case-Studies (2022)
Conference Proceeding
Tolo, S., & Andrews, J. (2022). An Integrated Modelling Framework for Complex Systems Safety Analysis: Case-Studies. In M. C. Leva, E. Patelli, L. Podofillini, & S. Wilson (Eds.), Book of Extended Abstracts for the 32nd European Safety and Reliability Conference (135-136)

The ever-increasing complexity of engineering systems has fuelled the need for novel and efficient computational tools able to enhance the accuracy of current modelling strategies for industrial systems. Indeed, traditional Fault and Event Tree techn... Read More about An Integrated Modelling Framework for Complex Systems Safety Analysis: Case-Studies.

Dynamic and Dependent Tree Theory (D 2 T 2 ): A Fault Tree Analysis Framework (2022)
Conference Proceeding
Andrews, J., & Tolo, S. (2022). Dynamic and Dependent Tree Theory (D 2 T 2 ): A Fault Tree Analysis Framework. In M. Chiara Leva, E. Patelli, L. Podofillini, & S. Wilson (Eds.), Book of Extended Abstracts for the 32nd European Safety and Reliability Conference (139-140)

A modelling framework, known as Dynamic and Dependent Tree Theory, is provided which overcomes restrictions in the Kinetic Tree Theory developed in the 1970s for the analysis of fault trees. Kinetic Tree Theory assumes basic events to be independent... Read More about Dynamic and Dependent Tree Theory (D 2 T 2 ): A Fault Tree Analysis Framework.

A Petri Net approach to the Risk Analysis of Jet Engines (2022)
Conference Proceeding
Tolo, S., Andrews, J., Thatcher, I., & Stamp, D. (2022). A Petri Net approach to the Risk Analysis of Jet Engines. In M. Chiara Leva, E. Patelli, L. Podofillini, & S. Wilson (Eds.), Book of Extended Abstracts for the 32nd European Safety and Reliability Conference (137-138)

Traditional risk analysis techniques such as Fault Trees and Event Trees fail to model complex aspects of systems behaviour such as components dependencies, degradation, limiting their capability of representing modern engineering systems. This is al... Read More about A Petri Net approach to the Risk Analysis of Jet Engines.

Asset management modelling approach integrating structural health monitoring data for composite components of wind turbine blades (2022)
Conference Proceeding
Wu, W., Saleh, A., Remenyte-Prescott, R., Prescott, D., Ruano, M. C., & Chronopoulos, D. (2022). Asset management modelling approach integrating structural health monitoring data for composite components of wind turbine blades. In Proceedings of the 32nd European Safety and Reliability Conference (ESREL 2022) (1385-1392). https://doi.org/10.3850/978-981-18-5183-4_R22-24-242-cd

Optimal asset management strategies for wind turbine blades help to reduce their operation and maintenance costs, and ensure their reliability and safety. Structural health monitoring (SHM) can determine the health state of wind turbine blades throug... Read More about Asset management modelling approach integrating structural health monitoring data for composite components of wind turbine blades.

Modelling Variations in Newborn Life Support Procedure Using Colored Petri Nets (2022)
Conference Proceeding
Leva, M. C., Patelli, E., Podofillini, L., Wilson, S., Tan, A., Remenyte-Prescott, R., …Sharkey, D. (2022). Modelling Variations in Newborn Life Support Procedure Using Colored Petri Nets. In M. Chiara Leva, E. Patelli, L. Podofillini, & S. Wilson (Eds.), Proceedings of the 32nd European Safety and Reliability Conference (ESREL 2022) (489-496). https://doi.org/10.3850/978-981-18-5183-4_R12-08-152-cd

This research is conducted to study variations in the Newborn Life Support procedure. This procedure follows an evidence-based protocol to resuscitate and stabilize newborn babies requiring assistance at birth. Errors and ineffective actions in this... Read More about Modelling Variations in Newborn Life Support Procedure Using Colored Petri Nets.