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Self-commissioning of interior permanent- magnet synchronous motor drives with high-frequency current injection (2014)
Journal Article
Odhano, S., Giangrande, P., Bojoi, R., & Gerada, C. (2014). Self-commissioning of interior permanent- magnet synchronous motor drives with high-frequency current injection. IEEE Transactions on Industry Applications, 50(5), https://doi.org/10.1109/TIA.2014.2309722

In this paper, a simple and robust method for parameter estimation at rotor standstill is presented for interior permanent magnet (IPM) synchronous machines. The estimated parameters are the stator resistance through dc test, the dq inductances using... Read More about Self-commissioning of interior permanent- magnet synchronous motor drives with high-frequency current injection.

Design of a high-force-density tubular motor (2014)
Journal Article
Galea, M., Buticchi, G., Empringham, L., De Lillo, L., & Gerada, C. (2014). Design of a high-force-density tubular motor. IEEE Transactions on Industry Applications, 50(4), https://doi.org/10.1109/TIA.2014.2300190

This paper deals with the design, construction and experimental verification of a high force density, tubular, linear, permanent magnet motor, driven from a high power density matrix converter for an aerospace application. The work also describes the... Read More about Design of a high-force-density tubular motor.

High-speed electrical machines: technologies, trends and developments (2013)
Journal Article
Gerada, D., Mebarki, A., Brown, N., Gerada, C., Cavagnino, A., & Boglietti, A. (2014). High-speed electrical machines: technologies, trends and developments. IEEE Transactions on Industrial Electronics, 61(6), https://doi.org/10.1109/TIE.2013.2286777

This paper reviews the current technologies used in high speed electrical machines, through an extensive survey of different topologies developed and built in industry as well as in academia for several applications. Developments in materials and com... Read More about High-speed electrical machines: technologies, trends and developments.

A high-speed permanent-magnet machine for fault-tolerant drivetrains (2013)
Journal Article
Papini, L., Tsarfidy, R., Gerada, D., & Gerada, C. (2013). A high-speed permanent-magnet machine for fault-tolerant drivetrains. IEEE Transactions on Industrial Electronics, 61(6), https://doi.org/10.1109/TIE.2013.2282604

This paper details the design considerations of a permanent magnet (PM), three phase, high speed, synchronous machine for fault tolerant operation. A multidisciplinary approach to the optimal design of the machine is adopted targeted at minimising th... Read More about A high-speed permanent-magnet machine for fault-tolerant drivetrains.

Induction motors versus permanent magnet actuators for aerospace applications (2013)
Journal Article
Kakosimos, P. E., Sarigiannidis, A. G., Beniakar, M. E., Kladas, A. G., & Gerada, C. (2014). Induction motors versus permanent magnet actuators for aerospace applications. IEEE Transactions on Industrial Electronics, 61(8), https://doi.org/10.1109/TIE.2013.2274425

This paper introduces a comparative study on the design of aerospace actuators concerning Induction Motor (IM) and Permanent Magnet Motor (PMM) technologies. In the analysis undertaken, the two candidate configurations are evaluated in terms of both... Read More about Induction motors versus permanent magnet actuators for aerospace applications.

Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines (2013)
Journal Article
Arumugam, P., Hamiti, T., Brunson, C., & Gerada, C. (2014). Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines. IEEE Transactions on Industrial Electronics, 61(3), 1158-1168. https://doi.org/10.1109/TIE.2013.2259777

This paper investigates the behavior of a vector-controlled fault-tolerant permanent magnet motor drive system adopting a vertically placed strip winding (VSW) which can limit interturn short-circuit (SC) fault current to its rated value regardless o... Read More about Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines.

Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management (2013)
Journal Article
Connor, P. H., Pickering, S., Gerada, C., Eastwick, C., Micallef, C., & Tighe, C. (2013). Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management. IET Electric Power Applications, 7(3), https://doi.org/10.1049/iet-epa.2012.0278

This study is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Owing to the temperature dependent resistive losses in the machine's windings, any improvement in cooling provides a direct redu... Read More about Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management.

CFD modelling of an entire synchronous generator for improved thermal management (2012)
Conference Proceeding
Connor, P. H., Pickering, S. J., Gerada, C., Eastwick, C. N., & Micallef, C. (2012). CFD modelling of an entire synchronous generator for improved thermal management. . https://doi.org/10.1049/cp.2012.0290

This paper is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Due to the temperature dependent resistive losses in the machine's windings any improvement in cooling provides a direct reducti... Read More about CFD modelling of an entire synchronous generator for improved thermal management.

A thermal improvement technique for phase windings of electrical machines (2011)
Journal Article
Galea, M., Gerada, C., Raminosa, T., & Wheeler, P. (2012). A thermal improvement technique for phase windings of electrical machines. IEEE Transactions on Industry Applications, 48(1), https://doi.org/10.1109/TIA.2011.2175470

In electrical machines, a higher torque/force density can usually be achieved by increasing the current density in the windings. However, the resulting increase in copper losses leads to higher temperatures in the coils, especially in the centre of t... Read More about A thermal improvement technique for phase windings of electrical machines.

An analytical and genetic-algorithm-based design tool for brushless excitation systems of low-medium rated synchronous generators
Conference Proceeding
Nuzzo, S., Galea, M., Gerada, C., & Brown, N. (in press). An analytical and genetic-algorithm-based design tool for brushless excitation systems of low-medium rated synchronous generators.

The sizing procedures adopted for the everyday design of electrical machines are well known and consolidated. However, for brushless exciters of field wound, synchronous generators, there is significant room for improvement as the impact of the diode... Read More about An analytical and genetic-algorithm-based design tool for brushless excitation systems of low-medium rated synchronous generators.

Prediction of the voltage drop due to the diode commutation process in the excitation system of salient-pole synchronous generators
Conference Proceeding
Nuzzo, S., Galea, M., Gerada, C., & Brown, N. (in press). Prediction of the voltage drop due to the diode commutation process in the excitation system of salient-pole synchronous generators.

The commutation processes in uncontrolled diode rectifiers have been extensively studied and modelled. However, in some applications, such as electrical power generation, the effects of these processes are often neglected. In low to medium rated, fie... Read More about Prediction of the voltage drop due to the diode commutation process in the excitation system of salient-pole synchronous generators.

Integrated output filter inductor for permanent magnet motor drives
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Wheeler, P., & Patel, C. (in press). Integrated output filter inductor for permanent magnet motor drives.

This paper presents a novel approach to integrate the output filter inductor in permanent magnet synchronous motor (PMSM) drive system. The integrated output filter inductor is based on utilizing the motor magnetics as a filter inductance instead of... Read More about Integrated output filter inductor for permanent magnet motor drives.

Comparative Analysis Between Axial and Coaxial Magnetic Couplings
Conference Proceeding
Akcay, Y., Giangrande, P., Gerada, C., & Galea, M. (2021). Comparative Analysis Between Axial and Coaxial Magnetic Couplings. In The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020). https://doi.org/10.1049/icp.2021.1147

The adoption of magnetic couplings enables the transmission of mechanical power relying on the magnetic fields interaction rather than a physical mechanical connection. Hence, the contactless speed/torque transmission leads to improvements in terms o... Read More about Comparative Analysis Between Axial and Coaxial Magnetic Couplings.