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All Outputs (13)

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 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.

Mild hybridisation of turboprop engine with high-power-density integrated electric drives (2022)
Journal Article
Cossart, G., Chen, Y., Yang, T., Khowja, M., La Rocca, A., Nasir, U., …Wheeler, P. (2022). Mild hybridisation of turboprop engine with high-power-density integrated electric drives. IEEE Transactions on Transportation Electrification, 8(4), 4148-4162. https://doi.org/10.1109/TTE.2022.3160153

This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project... Read More about Mild hybridisation of turboprop engine with high-power-density integrated electric drives.

Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies (2021)
Journal Article
Khowja, M. R., Abebe, R., Vakil, G., Walker, A., Patel, C., Gerada, C., …Cascella, G. L. (2021). Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies. Energies, 15(1), Article 88. https://doi.org/10.3390/en15010088

With the increased necessity of a high power density and efficient system in aerospace and marine industries, integrated motor drives provide an excellent solution in the modern era. Therefore, a close structural and functional integration of passive... Read More about Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies.

Integrated motor drive: Mass and volume optimization of the motor with an integrated filter inductor (2021)
Journal Article
Khowja, M. R., Vakil, G., Gerada, C., Patel, C., Odhano, S., & Wheeler, P. (2021). Integrated motor drive: Mass and volume optimization of the motor with an integrated filter inductor. Energies, 14(15), Article 4564. https://doi.org/10.3390/en14154564

The present trend of aerospace industries is being shifted towards a “More Electric Aircraft” system which needs to be high power dense. For this purpose, the integration technologies have gained massive interest, providing the benefits of reduced lo... Read More about Integrated motor drive: Mass and volume optimization of the motor with an integrated filter inductor.

Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods (2021)
Journal Article
Khowja, M. R., Turabee, G., Giangrande, P., Madonna, V., Cosma, G., Vakil, G., …Galea, M. (2021). Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods. IEEE Access, 9, 18993-19003. https://doi.org/10.1109/access.2021.3052058

Estimating the lifetime of enameled wires using the conventional/standard test method requires a significant amount of time that can endure up to thousands of testing hours, which could considerably delay the time-to-market of a new product. This pap... Read More about Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods.

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.

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.

Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics (2020)
Journal Article
Khowja, M. R., Gerada, C., Vakil, G., Patel, C., Odhano, S. A., Walker, A., & Wheeler, P. (2021). Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics. IEEE Transactions on Industrial Electronics, 68(7), 5638-5649. https://doi.org/10.1109/tie.2020.3000110

A close functional and structural integration of passive elements is required to improve the power density of motor drives. Such power-dense motor drives are prerequisites in aerospace and automotive applications. This article presents a permanent ma... Read More about Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics.

The Role of Neural Networks in Predicting the Thermal Life of Electrical Machines (2020)
Journal Article
Turabee, G., Khowja, M. R., Giangrande, P., Madonna, V., Cosma, G., Vakil, G., …Galea, M. (2020). The Role of Neural Networks in Predicting the Thermal Life of Electrical Machines. IEEE Access, 8, 40283-40297. https://doi.org/10.1109/ACCESS.2020.2975985

© 2013 IEEE. For a continuous mode of operation, insulating material in an electrical machine is subject to constant thermal, electrical, mechanical and environmental stresses where thermal stress is a major cause of gradual insulation deterioration,... Read More about The Role of Neural Networks in Predicting the Thermal Life of Electrical Machines.

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.

Decoupled Model for Asymmetrical Dual Three Phase Permanent Magnet Synchronous Machine (2019)
Conference Proceeding
Chen, Y., Bozhko, S., Fan, L., Yang, T., & Khowja, M. R. (2019). Decoupled Model for Asymmetrical Dual Three Phase Permanent Magnet Synchronous Machine. In 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (1971-1976). https://doi.org/10.1109/IEMDC.2019.8785279

This paper presents a decoupled modeling method for asymmetrical dual three phase (DTP) permanent magnet synchronous machine (PMSM). Due to the special structure of this machine, traditional decoupled method cannot be applied on it. This paper propos... Read More about Decoupled Model for Asymmetrical Dual Three Phase Permanent Magnet Synchronous Machine.

Novel Motor-Shaped Rotational Inductor for Motor Drive Applications (2019)
Journal Article
Odhano, S., Khowja, M. R., Gerada, C., Vakil, G., Abebe, R., Odhano, S. A., …Wheeler, P. (2020). Novel Motor-Shaped Rotational Inductor for Motor Drive Applications. IEEE Transactions on Industrial Electronics, 67(3), 1844-1854. https://doi.org/10.1109/tie.2019.2907512

This paper presents a validation of the novel motor-shaped rotational inductor. To validate the concept, 12 slots 2 poles rotational inductor is tested at different supply frequencies and rotor speeds. Experimental results have shown that the iron lo... Read More about Novel Motor-Shaped Rotational Inductor for Motor Drive Applications.