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Design, Analysis and Dynamic Performance of Radial Magnetic Coupling (2020)
Conference Proceeding
Akcay, Y., Giangrande, P., & Galea, M. (2020). Design, Analysis and Dynamic Performance of Radial Magnetic Coupling. . https://doi.org/10.23919/icems50442.2020.9291124

Contactless torque/speed transmission is gaining an ever-increasing interest in industry and mobile applications, since the mechanical wear-out is avoided resulting in lower maintenance costs. The radial topology is one possible configuration for mag... Read More about Design, Analysis and Dynamic Performance of Radial Magnetic Coupling.

Influence of Thermal Aging on the Winding Thermal Conductivity in Low Voltage Electrical Machines (2020)
Conference Proceeding
Madonna, V., Giangrande, P., & Galea, M. (2020). Influence of Thermal Aging on the Winding Thermal Conductivity in Low Voltage Electrical Machines. . https://doi.org/10.23919/icems50442.2020.9291167

It is widely acknowledged that thermal aging can have a detrimental effect on the reliability and lifetime expectancy of electrical machines. Long exposure times to high temperature can deteriorate the dielectric properties of the electrical insulati... Read More about Influence of Thermal Aging on the Winding Thermal Conductivity in Low Voltage Electrical Machines.

A Novel Magnetic Coupling Configuration for Enhancing the Torque Density (2020)
Conference Proceeding
Akcay, Y., Giangrande, P., & Galea, M. (2020). A Novel Magnetic Coupling Configuration for Enhancing the Torque Density. . https://doi.org/10.23919/icems50442.2020.9291073

This paper introduces a novel magnetic coupling (MC) topology, which is able to achieve significant torque density values by adding a limited amount of extra permanent magnets (PMs). Indeed, the proposed MC architecture, namely enhanced magnetic coup... Read More about A Novel Magnetic Coupling Configuration for Enhancing the Torque Density.

On single-phase operation of three-phase synchronous generators (2020)
Conference Proceeding
Spagnolo, C., Nuzzo, S., Giangrande, P., Galea, M., & Serra, G. (2020). On single-phase operation of three-phase synchronous generators. In ICEMS2020 Web Remote Conference, The 23rd International Conference on Electrical Machines and Systems, November 24 to 27, 2020 (1994-1999). https://doi.org/10.23919/icems50442.2020.9290872

Classical synchronous generators have been used for decades in the field of power generation. The traditional manner of operation of these systems is the balanced, three phase configuration. However, recently there has been an interest in re-configur... Read More about On single-phase operation of three-phase synchronous generators.

PM Halbach Arrays in Motors: Loss Reduction and Performance Improvements (2020)
Conference Proceeding
Hebala, A., Nuzzo, S., Connor, P. H., Giangrande, P., Gerada, C., & Galea, M. (2020). PM Halbach Arrays in Motors: Loss Reduction and Performance Improvements. . https://doi.org/10.23919/ICEMS50442.2020.9291234

© 2020 The Institute of Electrical Engineers of Japan. Halbach array configurations represent a common choice in high-performance electrical machines, since a stronger magnetic field is generated for the same Permanent Magnet (PM) volume. Hence, high... Read More about PM Halbach Arrays in Motors: Loss Reduction and Performance Improvements.

Energy Storage System Selection for Optimal Fuel Consumption of Aircraft Hybrid Electric Taxiing Systems (2020)
Journal Article
Recalde, A., Lukic, M., Hebala, A., Giangrande, P., Klumpner, C., Nuzzo, S., …Galea, M. (2021). Energy Storage System Selection for Optimal Fuel Consumption of Aircraft Hybrid Electric Taxiing Systems. IEEE Transactions on Transportation Electrification, 7(3), 1870-1887. https://doi.org/10.1109/TTE.2020.3039759

IEEE Aircraft taxiing is conventionally performed using the main engines’ inefficient idle thrust. Therefore, in line with greener aviation, the electrification of taxiing is the most viable option to reduce emissions, noise, and fossil fuel consumpt... Read More about Energy Storage System Selection for Optimal Fuel Consumption of Aircraft Hybrid Electric Taxiing Systems.

Additive Manufacturing and Testing of a Soft Magnetic Rotor for a Switched Reluctance Motor (2020)
Journal Article
Gargalis, L., Madonna, V., Giangrande, P., Rocca, R., Hardy, M., Ashcroft, I., …Hague, R. (2020). Additive Manufacturing and Testing of a Soft Magnetic Rotor for a Switched Reluctance Motor. IEEE Access, 8, 206982-206991. https://doi.org/10.1109/ACCESS.2020.3037190

Additive manufacturing is acknowledged as a key enabling technology, although its adoption is still constrained to niche applications. A promising area for this technology is the production of electrical machines (EMs) and/or their main components (e... Read More about Additive Manufacturing and Testing of a Soft Magnetic Rotor for a Switched Reluctance Motor.

Weibull Distribution and Geometrical Size Factor for Evaluating the Thermal Life of Electrical Machines' Insulation (2020)
Conference Proceeding
Madonna, V., Giangrande, P., & Galea, M. (2020). Weibull Distribution and Geometrical Size Factor for Evaluating the Thermal Life of Electrical Machines' Insulation. In IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society (1114-1119). https://doi.org/10.1109/IECON43393.2020.9255227

© 2020 IEEE. The thermal lifetime assessment of electrical machines' insulation systems is generally performed at the design and prototyping stages. Hence, the insulation system's thermal endurance curve (or temperature index) can be extrapolated, al... Read More about Weibull Distribution and Geometrical Size Factor for Evaluating the Thermal Life of Electrical Machines' Insulation.

Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design (2020)
Journal Article
Cheong, B., Giangrande, P., Zhang, X., Galea, M., Zanchetta, P., & Wheeler, P. (2020). Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design. IEEE Transactions on Industry Applications, 56(6), 6904-6913. https://doi.org/10.1109/tia.2020.3016630

The use of optimization algorithms to design motor drive components is increasingly common. To account for component interactions, complex system-level models with many input parameters and constraints are needed, along with advanced optimization tec... Read More about Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design.

DC Current Control for a Single-Stage Current Source Inverter in Motor Drive Application (2020)
Journal Article
Migliazza, G., Buticchi, G., Carfagna, E., Lorenzani, E., Madonna, V., Giangrande, P., & Galea, M. (2021). DC Current Control for a Single-Stage Current Source Inverter in Motor Drive Application. IEEE Transactions on Power Electronics, 36(3), 3367-3376. https://doi.org/10.1109/tpel.2020.3013301

The current source inverter (CSI) is a power electronics topology that allows for the realization of variable speed drives (VSD). Compared to the most common voltage source inverter (VSI), which can be directly connected to a voltage source, the CSI... Read More about DC Current Control for a Single-Stage Current Source Inverter in Motor Drive Application.

A Consequent-Pole Hybrid Exciter for Synchronous Generators (2020)
Journal Article
Nuzzo, S., Bolognesi, P., Decuzzi, G., Giangrande, P., & Galea, M. (2021). A Consequent-Pole Hybrid Exciter for Synchronous Generators. IEEE Transactions on Energy Conversion, 36(1), 368-379. https://doi.org/10.1109/tec.2020.3012198

In low-to-medium power generating sets, a self-powered brushless excitation system is typically employed. This solution is cost-effective, simple and compact, but it suffers from an unreliable voltage build-up at start-up, a slow dynamic response and... Read More about A Consequent-Pole Hybrid Exciter for Synchronous Generators.

A Homothetic Scaling Criteria for Synchronous Reluctance Machines Design (2020)
Journal Article
Murataliyev, M., Degano, M., Di Nardo, M., Prystupa, D., Shuo, W., Buticchi, G., …Galea, M. (2021). A Homothetic Scaling Criteria for Synchronous Reluctance Machines Design. IEEE Transactions on Energy Conversion, 36(1), 547-559. https://doi.org/10.1109/tec.2020.3011514

This paper proposes a concept for homothetic scaling of Synchronous Reluctance (SynRel) machines with the aim to generate a design for a wide range of power ratings. A generalized modeling approach, based on the saliency ratio, is presented in detail... Read More about A Homothetic Scaling Criteria for Synchronous Reluctance Machines Design.

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.

Unconventional accelerated thermal ageing test for traction electric motors in vehicles (2020)
Conference Proceeding
Lusuardi, L., Cavallini, A., Madonna, V., Giangrande, P., & Galea, M. (2020). Unconventional accelerated thermal ageing test for traction electric motors in vehicles. In Proceedings of the 2020 IEEE Electrical Insulation Conference (EIC) (212-216). https://doi.org/10.1109/EIC47619.2020.9158744

© 2020 IEEE. Car manufacturers are increasingly working to make the all-electric car a reliable and affordable mobility option for a larger section of the population. However, several issues need to be addressed before achieving this goal. One of the... Read More about Unconventional accelerated thermal ageing test for traction electric motors in vehicles.

RexMoto-A Range Extender Concept for Light Electric Aircraft (2020)
Conference Proceeding
Glassock, R., Madonna, V., Giangrande, P., & Galea, M. (2020). RexMoto-A Range Extender Concept for Light Electric Aircraft. In 2020 IEEE Transportation Electrification Conference & Expo (ITEC) (930-935). https://doi.org/10.1109/ITEC48692.2020.9161496

© 2020 IEEE. A main limitation of fully electric vehicles is their maximum range, which is principally constrained by the performance (i.e. energy density) of energy storage systems. A range extender, coupled to an electric vehicle, is a system able... Read More about RexMoto-A Range Extender Concept for Light Electric Aircraft.

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.

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.

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.

Reliability oriented design of low voltage electrical machines based on accelerated thermal aging tests (2020)
Conference Proceeding
Giangrande, P., Madonna, V., & Galea, M. (2020). Reliability oriented design of low voltage electrical machines based on accelerated thermal aging tests. In SPEEDAM 2020 – Proceedings: International Symposium on Power Electronics, Electrical Drives and Motion: virtual meeting. https://doi.org/10.1109/SPEEDAM48782.2020.9161974

© 2020 IEEE. In transport applications, electrical machines (EMs) are required to be highly reliable, in order to fulfill the intended mission profile over the expected lifetime. This task has been conventionally addressed through the adoption of saf... Read More about Reliability oriented design of low voltage electrical machines based on accelerated thermal aging tests.

Thermal and Electromagnetic Stator Vent Design Optimisation for Synchronous Generators (2020)
Journal Article
Bersch, K., Nuzzo, S., Connor, P. H., Eastwick, C. N., Rolston, R., & Galea, M. (2021). Thermal and Electromagnetic Stator Vent Design Optimisation for Synchronous Generators. IEEE Transactions on Energy Conversion, 36(1), 207-217. https://doi.org/10.1109/tec.2020.3004393

© 2020 Institute of Electrical and Electronics Engineers Inc.. All rights reserved. This paper deals with the stator cooling of an air-cooled, synchronous generator with a power rating of 400 kVA, which has been improved by adding two radial vents to... Read More about Thermal and Electromagnetic Stator Vent Design Optimisation for Synchronous Generators.