All Outputs (167)

Optimized Magnet wire size and Slot winding height for minimum AC losses in a Traction Machine (2020)
Conference Proceeding
Bardalai, A., Gerada, D., Xu, Z., & Gerada, C. (2020). Optimized Magnet wire size and Slot winding height for minimum AC losses in a Traction Machine. In 2020 International Conference on Electrical Machines (ICEM) (266-271). https://doi.org/10.1109/ICEM49940.2020.9270762

The demand for high performance electrical machines that combine high power density (kW/kg or kW/L), light – weighting and high efficiency have become more and more important in recent years. In these machines, mitigation of the parasitic losses asso... Read More about Optimized Magnet wire size and Slot winding height for minimum AC losses in a Traction Machine.

Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects (2020)
Conference Proceeding
Mahmoud, H., Valente, G., Degano, M., Nardo, M. D., Gerada, C., & James, B. (2020). Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects. . https://doi.org/10.1109/icem49940.2020.9270761

The key driving elements for any electrical machine (EM) used in aerospace and other safety critical applications are the reliability, mass, volume, and efficiency. To reduce mass/volume while satisfying the power required, the option is to increase... Read More about Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects.

An Analytical Approach for the Design of Innovative Hairpin Winding Layouts (2020)
Conference Proceeding
Arzillo, A., Nuzzo, S., Braglia, P., Franceschini, G., Barater, D., Gerada, D., & Gerada, C. (2020). An Analytical Approach for the Design of Innovative Hairpin Winding Layouts. . https://doi.org/10.1109/icem49940.2020.9270927

This work deals with an analytical approach aimed at accurately predicting Joule losses in innovative hairpin winding layouts. While hairpin windings are seeing an everincreasing use in automotive and aerospace applications due to their inherently hi... Read More about An Analytical Approach for the Design of Innovative Hairpin Winding Layouts.

Advantages of a Double Three-Phase Winding Layout for a Dual Rotor E-Bike Motor Considering Third Current Harmonic Injection Technique (2020)
Conference Proceeding
Gaetano, D. D., Golovanov, D., Sala, G., Galassini, A., Degano, M., Mahmoud, H., & Gerada, C. (2020). Advantages of a Double Three-Phase Winding Layout for a Dual Rotor E-Bike Motor Considering Third Current Harmonic Injection Technique. In 2020 IEEE Transportation Electrification Conference & Expo (ITEC) (1159-1164). https://doi.org/10.1109/itec48692.2020.9161620

The transportation electrification process is rapidly demanding for drivers with enhanced performance. Modern systems are moving from fossil fuel technologies toward hybrid and fully electric solutions. Consequently, in automotive and motorcycle sect... Read More about Advantages of a Double Three-Phase Winding Layout for a Dual Rotor E-Bike Motor Considering Third Current Harmonic Injection Technique.

Predicting Insulation Resistance of Enamelled Wire using Neural Network and Curve Fit Methods Under Thermal Aging (2020)
Conference Proceeding
Turabee, G., Cosma, G., Madonna, V., Giangrande, P., Khowja, M. R., Vakil, G., …Galea, M. (2020). Predicting Insulation Resistance of Enamelled Wire using Neural Network and Curve Fit Methods Under Thermal Aging. In 2020 International Joint Conference onNeural Networks (IJCNN): 2020 conference proceedings (1-7). https://doi.org/10.1109/IJCNN48605.2020.9207378

© 2020 IEEE. Health monitoring has gained a massive interest in power systems engineering, as it has the advantage to reduce operating costs, improve reliability of power supply and provide a better service to customers. This paper presents surrogate... Read More about Predicting Insulation Resistance of Enamelled Wire using Neural Network and Curve Fit Methods Under Thermal Aging.

Feasibility Design Study of High-Performance, High-Power-Density Propulsion Motor for Middle-Range Electric Aircraft (2020)
Conference Proceeding
Hebala, A., Nuzzo, S., Volpe, G., Connor, P. H., Giangrande, P., Gerada, C., & Galea, M. (2020). Feasibility Design Study of High-Performance, High-Power-Density Propulsion Motor for Middle-Range Electric Aircraft. In 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE) (300-306). https://doi.org/10.1109/ISIE45063.2020.9152551

This paper deals with the design of a high power-density, high efficiency and low torque ripple propulsion motor for electric aircraft. The proposed design procedure resulted in a high-performance propulsion motor intended for a direct-drive solution... Read More about Feasibility Design Study of High-Performance, High-Power-Density Propulsion Motor for Middle-Range Electric Aircraft.

Challenges and Future opportunities of Hairpin Technologies (2020)
Conference Proceeding
Arzillo, A., Braglia, P., Nuzzo, S., Barater, D., Franceschini, G., Gerada, D., & Gerada, C. (2020). Challenges and Future opportunities of Hairpin Technologies. . https://doi.org/10.1109/ISIE45063.2020.9152417

Hairpin windings are seeing an ever-increasing application and development in electrical machines designed for high power and torque densities. In fact, due to their inherently high fill factor, they are very attractive in applications, such as trans... Read More about Challenges and Future opportunities of Hairpin Technologies.

Analysis and Modelling of High Frequency Effects on Synchronous Generator’s Armature Conductors (2020)
Conference Proceeding
Quadri, Q. H., Nuzzo, S., Gerada, C., & Galea, M. (2020). Analysis and Modelling of High Frequency Effects on Synchronous Generator’s Armature Conductors. In 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE) (253-258). https://doi.org/10.1109/ISIE45063.2020.9152456

This paper investigates the accuracy of the subdomain modelling technique for high frequency copper loss calculation in stator windings of synchronous generators. The methodology's accuracy is studied at a slot level up to 10 kHz against FE model wit... Read More about Analysis and Modelling of High Frequency Effects on Synchronous Generator’s Armature Conductors.

Thermal Lifetime Evaluation of Electrical Machines Using Neural Network (2020)
Conference Proceeding
Turabee, G., Khowja, M. R., Madonna, V., Giangrande, P., Vakil, G., Gerada, C., & Galea, M. (2020). Thermal Lifetime Evaluation of Electrical Machines Using Neural Network. In 2020 IEEE Transportation Electrification Conference & Expo (ITEC) (1153-1158). https://doi.org/10.1109/ITEC48692.2020.9161662

© 2020 IEEE. This paper proposes a surrogate approach which utilises an supervised neural network to significantly shorten the time required for thermal qualification of electrical machines' insulation. The proposed approach is based on a feedforward... Read More about Thermal Lifetime Evaluation of Electrical Machines Using Neural Network.

A Hybrid Computational Tool to Analyze the Performance of Electric Machines with Reduced Content of Permanent Magnet (2020)
Conference Proceeding
Ram Kumar, R. M., Khowja, M. R., Vakil, G., Gerada, D., Gerada, C., Paciura, K., & Fernandes, B. G. (2020). A Hybrid Computational Tool to Analyze the Performance of Electric Machines with Reduced Content of Permanent Magnet. In 2020 IEEE Transportation Electrification Conference & Expo (ITEC) (340-345). https://doi.org/10.1109/itec48692.2020.9161631

Electric vehicles (EVs) are equipped with interior permanent magnet (IPM) or permanent magnet assisted synchronous reluctance (PM-SynRel) machines because of their superior performance in field weakening region. The effect of saturation is more prono... Read More about A Hybrid Computational Tool to Analyze the Performance of Electric Machines with Reduced Content of Permanent Magnet.

Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator (2020)
Conference Proceeding
Rocca, A. L., Khowja, M. R., Vakil, G., Gerada, C., & Wheeler, P. (2020). Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator

This paper presents a combined electromagnetic and thermal design of integrated inductor, for the application of a 45kW aircraft starter-generator. The inductor is designed at high current density by using the apporach ofarea product, followed by the... Read More about Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator.

The potential of exploiting non-symmetric structures in electrical machines (2019)
Conference Proceeding
Nuzzo, S., Marfoli, A., Papini, L., Bolognesi, P., Gerada, C., & Galea, M. (2019). The potential of exploiting non-symmetric structures in electrical machines. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (1393-1398). https://doi.org/10.1109/IECON.2019.8927001

Typically, electrical machines feature rotor and stator winding configurations and core structures which comply with both simplicity and cost requirements. Such constraints limit the design search space and degrees of freedom, thus leading to exploit... Read More about The potential of exploiting non-symmetric structures in electrical machines.

Sensitivity Analysis of Machine Components Thermal Properties Effects on Winding Temperature (2019)
Conference Proceeding
Zhang, F., Gerada, D., Xu, Z., Zhang, H., & Gerada, C. (2019). Sensitivity Analysis of Machine Components Thermal Properties Effects on Winding Temperature. In 2019 22nd International Conference on Electrical Machines and Systems (ICEMS). https://doi.org/10.1109/ICEMS.2019.8922095

This paper investigates the sensitivity analysis of winding temperature to key parameters in electrical machine thermal design. With a validated 3D thermal model based on an existing 75kW traction machine for an electric vehicle, the methodology of t... Read More about Sensitivity Analysis of Machine Components Thermal Properties Effects on Winding Temperature.

Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application (2019)
Conference Proceeding
Al-Ani, M., Walker, A., Vakil, G., Ramanathan, R., Zou, T., La Rocca, S., …McQueen, A. (2019). Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (4353-4359). https://doi.org/10.1109/IECON.2019.8926697

Recently, the synchronous reluctance machine limits have been pushed toward meeting the requirements of traction applications. A skilled electromagnetic architecture of a synchronous reluctance machine with the help of permanent magnets can push the... Read More about Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application.

Analytical Tool to Generate Torque-Speed Characteristics for Surface Mounted PM Machines in Constant Torque and Field Weakening Regions (2019)
Conference Proceeding
Khowja, M. R., Vakil, G., & Gerada, C. (2019). Analytical Tool to Generate Torque-Speed Characteristics for Surface Mounted PM Machines in Constant Torque and Field Weakening Regions. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (922-927). https://doi.org/10.1109/IECON.2019.8927436

This paper presents an analytical tool to generate torque vs speed characteristics of the surface-mounted permanent magnet machines to minimize the computation time and efforts. The paper also derives an expression of d-axis current in the field weak... Read More about Analytical Tool to Generate Torque-Speed Characteristics for Surface Mounted PM Machines in Constant Torque and Field Weakening Regions.

Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle (2019)
Conference Proceeding
La Rocca, S., La Rocca, A., Walker, A., Vakil, G., Gerada, D., Al-Ani, M., …Paciura, K. (2019). Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle. In Proceedings: 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS) (1-5). https://doi.org/10.1109/ICOECS46375.2019.8949929

Computational Fluid Dynamics (CFD) was used to carry out a fluid flow and thermal investigation of a high power dense traction machine for electric commercial vehicle. One of the features of the machine design considered is the high Length/Diameter (... Read More about Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle.

Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System (2019)
Conference Proceeding
Khowja, M. R., Vakil, G., Gerada, C., Yang, T., Bozhko, S., & Wheeler, P. (2019). Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1435-1440). https://doi.org/10.1109/IECON.2019.8926961

Mechanically-driven actuators, compressors and pumps are being replaced by the aircraft manufacturers that shift the trend towards 'More Electric Aircraft' and hence reducing the mechanical linkages within the aircraft system. This elevates the depen... Read More about Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System.

High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles (2019)
Conference Proceeding
Kumar, R. M. R., Zou, T., La Rocca, A., Vakil, G., Gerada, D., Walker, A., …Fernandes, B. G. (2019). High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1083-1088). https://doi.org/10.1109/IECON.2019.8927523

High power density and high torque density are the fundamental requirements for electric machines used in traction application. The former is obtained by potentially increasing the speed of the machine while the latter by using high energy density ra... Read More about High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles.

Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier (2019)
Conference Proceeding
Kumar, R. M. R., Vakil, G., Gerada, D., Walker, A., La Rocca, S., Al-Ani, M., …Fernandes, B. G. (2019). Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (4347-4352). https://doi.org/10.1109/IECON.2019.8926624

Electrical machines with high torque density are required for traction application. Availability of bonded magnets with complex shapes and magnetization pattern can significantly extend the design space of electrical machines. This paper introduces a... Read More about Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier.

Optimized Carrier Disposition Based Discontinuous Pulse-width Modulation Method for three-level NPC Converters (2019)
Conference Proceeding
Wang, M., Xu, L., Yang, B., Li, J., Gu, C., Zhang, H., …Li, Y. (2019). Optimized Carrier Disposition Based Discontinuous Pulse-width Modulation Method for three-level NPC Converters. In 2019 IEEE Energy Conversion Congress and Exposition (ECCE) (1442-1446). https://doi.org/10.1109/ECCE.2019.8912600

Three level neutral-point-clamped (3L-NPC) converter is a multilevel topology that is well-suited solution in high voltage, high frequency applications such as flexible AC transmission systems and electric vehicle drive systems. This paper is focused... Read More about Optimized Carrier Disposition Based Discontinuous Pulse-width Modulation Method for three-level NPC Converters.