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Radial force control of multi-sector permanent magnet machines for vibration suppression (2017)
Journal Article
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018). Radial force control of multi-sector permanent magnet machines for vibration suppression. IEEE Transactions on Industrial Electronics, 65(7), 5395-5405. https://doi.org/10.1109/TIE.2017.2780039

Radial force control in electrical machines has been widely investigated for a variety of bearingless machines, as well as for the conventional structures featuring mechanical bearings. This paper takes advantage of the spatial distribution of the wi... Read More about Radial force control of multi-sector permanent magnet machines for vibration suppression.

Multi-domain optimization of high power-density PM electrical machines for system architecture selection (2017)
Journal Article
Golovanov, D., Papini, L., Gerada, D., Xu, Z., & Gerada, C. (2018). Multi-domain optimization of high power-density PM electrical machines for system architecture selection. IEEE Transactions on Industrial Electronics, 65(7), 5302-5312. https://doi.org/10.1109/TIE.2017.2772188

The power density of electrical machines for transport applications has become a critical aspect and target of optimization. This paper looks at the development of an intelligent, rapid, flexible, and multidomain tool to aid for system-level optimiza... Read More about Multi-domain optimization of high power-density PM electrical machines for system architecture selection.

A two degrees of freedom system for wheel traction applications (2017)
Journal Article
Roggia, S., Cupertino, F., Gerada, C., & Galea, M. (2018). A two degrees of freedom system for wheel traction applications. IEEE Transactions on Industrial Electronics, 65(6), 4483-4491. https://doi.org/10.1109/TIE.2017.2767554

In this paper, the use of conical induction machines is proposed for an in-wheel traction application. Such machines offer a rotational movement combined with a translational motion of the rotor. The horizontal movement is essential when active engag... Read More about A two degrees of freedom system for wheel traction applications.

Design optimization of a high-speed synchronous reluctance machine (2017)
Journal Article
Di Nardo, M., Lo Calzo, G., Galea, M., & Gerada, C. (2018). Design optimization of a high-speed synchronous reluctance machine. IEEE Transactions on Industry Applications, 54(1), 233-243. https://doi.org/10.1109/TIA.2017.2758759

Synchronous reluctance machines, including the per¬manent magnet assisted variants are competitive motor topologies if the application requires high efficiency and a cost effective solution with a high flux weakening capability. However, increas¬ing... Read More about Design optimization of a high-speed synchronous reluctance machine.

Analysis, modelling and design considerations for the excitation systems of synchronous generators (2017)
Journal Article
Nuzzo, S., Galea, M., Gerada, C., & Brown, N. (2018). Analysis, modelling and design considerations for the excitation systems of synchronous generators. IEEE Transactions on Industrial Electronics, 65(4), 2996-3007. https://doi.org/10.1109/TIE.2017.2756592

The traditional generating set is usually comprised of a classical, wound-field, salient-pole or cylindrical rotor synchronous generator, excited by a separate smaller machine, via a rotating, uncontrolled diode rectifier. The effects of the commutat... Read More about Analysis, modelling and design considerations for the excitation systems of synchronous generators.

A new method for determining the magnetic properties of solid materials employed in unconventional magnetic circuits (2017)
Journal Article
Mohammed, A., Cox, T., Galea, M., & Gerada, C. (in press). A new method for determining the magnetic properties of solid materials employed in unconventional magnetic circuits. IEEE Transactions on Industrial Electronics, https://doi.org/10.1109/TIE.2016.2587859

The mechanical and thermal properties of common, solid (non-laminated) ferromagnetic materials are widely available, but the electro-magnetic characteristics of such solid materials are often undefined. Existing characterization procedures such as th... Read More about A new method for determining the magnetic properties of solid materials employed in unconventional magnetic circuits.

Axial position estimation of conical shaped motors for aerospace traction applications (2017)
Journal Article
Roggia, S., Cupertino, F., Gerada, C., & Galea, M. (2017). Axial position estimation of conical shaped motors for aerospace traction applications. IEEE Transactions on Industry Applications, 53(6), 5405-5414. https://doi.org/10.1109/TIA.2017.2717911

This paper is concerned with the use of conical induction machines. Such machines are extremely valuable when apart from the rotational torque output, an axial translation of the rotor is also required. The inherent attraction between the stator and... Read More about Axial position estimation of conical shaped motors for aerospace traction applications.

Design optimization of a short-term duty electrical machine for extreme environment (2017)
Journal Article
Arumugam, P., Amankwah, E. K., Walker, A., & Gerada, C. (2017). Design optimization of a short-term duty electrical machine for extreme environment. IEEE Transactions on Industrial Electronics, 64(12), 9784-9794. https://doi.org/10.1109/TIE.2017.2711555

This paper presents design optimisation of a short term duty electrical machine for extreme environments of high temperature and high altitudes. For such extreme environmental conditions of above 80⁰C and altitudes of 30km, thermal loading limits are... Read More about Design optimization of a short-term duty electrical machine for extreme environment.

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine (2017)
Journal Article
Zhang, Y., McLoone, S., Cao, W., Qiu, F., & Gerada, C. (2017). Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine. IEEE Transactions on Energy Conversion, 32(4), 1468-1478. https://doi.org/10.1109/TEC.2017.2710159

© 1986-2012 IEEE. High-speed permanent magnet synchronous machines (PMSMs) have attracted much attention due to their high power density, high efficiency, and compact size for direct-drive applications. However, the consequent power loss density is h... Read More about Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine.

A fractional slot multiphase air-core compulsator with concentrated winding (2017)
Journal Article
Zhao, W., Wu, S., Cui, S., Gerada, C., Zhang, H., & Xu, Z. (2017). A fractional slot multiphase air-core compulsator with concentrated winding. IEEE Transactions on Plasma Science, 45(7), 1387-1393. https://doi.org/10.1109/TPS.2017.2705243

Compulsator is a specially designed generator capa¬ble of delivering high current pulses to a low-impedance load, such as the electromagnetic railgun. In order to increase the tip speed of the rotor, advanced composite materials have been used in the... Read More about A fractional slot multiphase air-core compulsator with concentrated winding.

Self-excitation and energy recovery of air-core compulsators (2017)
Journal Article
Zhao, W., Wu, S., Cui, S., Gerada, C., Zhang, H., & Xu, Z. (2017). Self-excitation and energy recovery of air-core compulsators. IEEE Transactions on Plasma Science, 45(7), 1168-1174. https://doi.org/10.1109/TPS.2017.2700027

As power supplies, compulsators are popular choices for high-end railgun power supplies. In order to increase power and energy density, air-core compulsators are proposed by using composite materials instead of traditional iron-core compulsators. Due... Read More about Self-excitation and energy recovery of air-core compulsators.

A fast method for modelling skew and its effects in salient-pole synchronous generators (2017)
Journal Article
Nuzzo, S., Galea, M., Gerada, C., & Brown, N. (in press). A fast method for modelling skew and its effects in salient-pole synchronous generators. IEEE Transactions on Industrial Electronics, 64(10), https://doi.org/10.1109/TIE.2017.2694378

The general effects of implementing skewing techniques in electrical machines are well known and have been extensively studied over the years. An important aspect of such techniques is related to the identification of optimal methods for analyzing an... Read More about A fast method for modelling skew and its effects in salient-pole synchronous generators.

Analytical thermal model for fast stator winding temperature prediction (2017)
Journal Article
Sciascera, C., Giangrande, P., Papini, L., Gerada, C., & Galea, M. (2017). Analytical thermal model for fast stator winding temperature prediction. IEEE Transactions on Industrial Electronics, 64(8), 6116-6126. https://doi.org/10.1109/TIE.2017.2682010

This paper introduces an innovative thermal modelling technique which accurately predicts the winding temperature of electrical machines, both at transient and steady state conditions, for applications where the stator Joule losses are the dominant h... Read More about Analytical thermal model for fast stator winding temperature prediction.

CQICO and multiobjective thermal optimization for high-speed PM generator (2017)
Journal Article
Zhang, X., Li, W., Gerada, C., Zhang, H., Li, J., Galea, M., …Cao, J. (2017). CQICO and multiobjective thermal optimization for high-speed PM generator. IEEE Transactions on Magnetics, 53(6), https://doi.org/10.1109/TMAG.2017.2658187

This paper proposes a novel Continuous Quantum Immune Clonal Optimization (CQICO) algorithm for thermal optimization on an 117kW high speed permanent magnet generator (HSPMG). The proposed algorithm mixes the Quantum Computation into the Immune Cloni... Read More about CQICO and multiobjective thermal optimization for high-speed PM generator.

Controlling DC permeability in cast steels (2017)
Journal Article
Sumner, A., Gerada, C., Brown, N., & Clare, A. (2017). Controlling DC permeability in cast steels. Journal of Magnetism and Magnetic Materials, 429, 79-85. https://doi.org/10.1016/j.jmmm.2016.12.137

Annealing (at multiple cooling rates) and quenching (with tempering) was performed on specimens of cast steel of varying composition. The aim was to devise a method for selecting the steel with the highest permeability, from any given range of steels... Read More about Controlling DC permeability in cast steels.