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On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor (2022)
Conference Proceeding
Hebala, A., Nuzzo, S., Connor, P. H., Gerada, C., & Galea, M. (2022). On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor. . https://doi.org/10.1109/icem51905.2022.9910866

In this paper, a study of the fault-tolerance and demagnetisation of a high-performance aircraft propulsion motor is investigated. The motor is proposed with either three or four sets of three-phase windings, while maintaining the same magnetic and t... Read More about On the Fault Tolerance and PM Demagnetisation of a High-Performance Aircraft Propulsion Motor.

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.

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.

Challenges and Opportunities for Wound Field Synchronous Generators in Future More Electric Aircraft (2020)
Journal Article
Wang, Y., Nuzzo, S., Zhang, H., Zhao, W., Gerada, C., & Galea, M. (2020). Challenges and Opportunities for Wound Field Synchronous Generators in Future More Electric Aircraft. IEEE Transactions on Transportation Electrification, 6(4), 1466-1477. https://doi.org/10.1109/tte.2020.2980189

Electrical machines and drives keep moving away from traditional technologies such as brushed machines and wound field machines towards lighter, ‘easier to maintain’ machines. A very interesting aspect is that certain transport applications, especial... Read More about Challenges and Opportunities for Wound Field Synchronous Generators in Future More Electric Aircraft.

Moving Toward a Reliability-Oriented Design Approach of Low-Voltage Electrical Machines by Including Insulation Thermal Aging Considerations (2020)
Journal Article
Giangrande, P., Madonna, V., Nuzzo, S., & Galea, M. (2020). Moving Toward a Reliability-Oriented Design Approach of Low-Voltage Electrical Machines by Including Insulation Thermal Aging Considerations. IEEE Transactions on Transportation Electrification, 6(1), 16-27. https://doi.org/10.1109/TTE.2020.2971191

© 2020 IEEE. Electrical machines (EMs) are required to consistently perform their intended mission over a specified timeframe. The move toward transportation electrification made the EMs' reliability an even stringent and predominant requirement, sin... Read More about Moving Toward a Reliability-Oriented Design Approach of Low-Voltage Electrical Machines by Including Insulation Thermal Aging Considerations.

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.

Modeling of Classical Synchronous Generators Using Size-Efficient Lookup Tables With Skewing Effect (2019)
Journal Article
Quadri, Q. H., Nuzzo, S., Rashed, M., Gerada, C., & Galea, M. (2019). Modeling of Classical Synchronous Generators Using Size-Efficient Lookup Tables With Skewing Effect. IEEE Access, 7, 174551-174561. https://doi.org/10.1109/access.2019.2957102

In this paper, an analytical model aimed at reducing computational times for the analysis of classical synchronous generators is proposed and validated. While the proposed model's attractiveness comes from its simple and fast nature, however, it also... Read More about Modeling of Classical Synchronous Generators Using Size-Efficient Lookup Tables With Skewing Effect.

Review, Challenges, and Future Developments of Electric Taxiing Systems (2019)
Journal Article
Lukic, M., Giangrande, P., Hebala, A., Nuzzo, S., & Galea, M. (2019). Review, Challenges, and Future Developments of Electric Taxiing Systems. IEEE Transactions on Transportation Electrification, 5(4), 1441-1457. https://doi.org/10.1109/tte.2019.2956862

The ever-increasing demand for passenger air traffic results in larger airline fleets every year. The aircraft market forecast reveals an unprecedented growth for the coming decades, leading to serious environmental and economic concerns among airlin... Read More about Review, Challenges, and Future Developments of Electric Taxiing Systems.

An Improved Automatic Voltage Regulator for Self-Excited, Small-to-Medium Power Generating Sets equipped with Brushless Excitation Systems (2019)
Conference Proceeding
Nuzzo, S., Bolognesi, P., Galea, M., & Barater, D. (2019). An Improved Automatic Voltage Regulator for Self-Excited, Small-to-Medium Power Generating Sets equipped with Brushless Excitation Systems. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (904-909). https://doi.org/10.1109/IECON.2019.8927675

The classical, wound-field, synchronous generator is currently enjoying a revamped interest in its design and development, partly due to the ever-increasing requirements in terms of power quality standards, efficiency and power density and partly due... Read More about An Improved Automatic Voltage Regulator for Self-Excited, Small-to-Medium Power Generating Sets equipped with Brushless Excitation Systems.

Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault (2019)
Conference Proceeding
Giangrande, P., Madonna, V., Nuzzo, S., Gerada, C., & Galea, M. (2019). Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault. . https://doi.org/10.1109/iemdc.2019.8785164

© 2019 IEEE. Permanent magnet synchronous machines (PMSMs)employing the dual three-phase winding represent a suitable solution for complying with the reliability requirements typically needed in safety-critical applications. Their inherent fault-tole... Read More about Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault.

Hybrid Magnet - Field Winding Solutions for Exciters of Synchronous Generators (2019)
Conference Proceeding
Decuzzi, G., Nuzzo, S., Bolognesi, P., Giangrande, P., & Galea, M. (2019). Hybrid Magnet - Field Winding Solutions for Exciters of Synchronous Generators. In 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (1458-1463). https://doi.org/10.1109/IEMDC.2019.8785174

For power generation purposes, wound-field synchronous generators are often preferred to permanent magnet machines, due to the need of controlling the field winding voltage and current for guaranteeing a constant voltage at the generator's armature t... Read More about Hybrid Magnet - Field Winding Solutions for Exciters of Synchronous Generators.

Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines (2019)
Conference Proceeding
Giangrande, P., Madonna, V., Nuzzo, S., Spagnolo, C., Gerada, C., & Galea, M. (2019). Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines. In Proceedings 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (71-76). https://doi.org/10.1109/WEMDCD.2019.8887772

© 2019 IEEE. In recent years, electrical machines are employed in an ever-increasing number of safety-critical applications, which require high power density, along with a demanding level of reliability and/or fault-tolerance capability. Multi-phase... Read More about Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines.

Simplified Damper Cage Circuital Model and Fast Analytical–Numerical Approach for the Analysis of Synchronous Generators (2018)
Journal Article
Nuzzo, S., Bolognesi, P., Gerada, C., & Galea, M. (2019). Simplified Damper Cage Circuital Model and Fast Analytical–Numerical Approach for the Analysis of Synchronous Generators. IEEE Transactions on Industrial Electronics, 66(11), 8361-8371. https://doi.org/10.1109/tie.2018.2885737

The long and enduring history of utilization of the wound-field synchronous generator in a large number of applications makes it one of the most known and consolidated electrical machine technologies. Thus, its design, modeling, and analysis processe... Read More about Simplified Damper Cage Circuital Model and Fast Analytical–Numerical Approach for the Analysis of Synchronous Generators.

Design of Fault-Tolerant Dual Three-Phase Winding PMSM for Helicopter Landing Gear EMA (2018)
Conference Proceeding
Giangrande, P., Madonna, V., Nuzzo, S., & Galea, M. (2018). Design of Fault-Tolerant Dual Three-Phase Winding PMSM for Helicopter Landing Gear EMA. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607684

On modern rotorcraft, electro-mechanical actuators (EMAs) are progressively replacing the bulky and more expensive hydraulic and/or pneumatic systems. Although the migration towards alternative actuation solutions, reliability remains a key requireme... Read More about Design of Fault-Tolerant Dual Three-Phase Winding PMSM for Helicopter Landing Gear EMA.

State of the Art of Electric Taxiing Systems (2018)
Conference Proceeding
Lukic, M., Hebala, A., Giangrande, P., Klumpner, C., Nuzzo, S., Chen, G., …Galea, M. (2018). State of the Art of Electric Taxiing Systems. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607786

The aviation industry represents an ever-expanding economy and the aircraft market forecast reveals an optimistic growth for the coming decades. New requirements and guidelines call for a more efficient, reliable, and environment friendly aircraft op... Read More about State of the Art of Electric Taxiing Systems.

Simplified Analytical Circuital Model of Damper Windings Exploiting Symmetries (2018)
Conference Proceeding
Nuzzo, S., Bolognesi, P., & Galea, M. (2018). Simplified Analytical Circuital Model of Damper Windings Exploiting Symmetries. In Proceedings - 2018 XIII International Conference on Electrical Machines (ICEM) (400-406). https://doi.org/10.1109/ICELMACH.2018.8507262

The damper windings of salient-pole, wound-field synchronous generators are currently attracting a renewed interest due to their impact on the machine efficiency and power quality, which was somewhat overlooked in the past. This paper focuses on the... Read More about Simplified Analytical Circuital Model of Damper Windings Exploiting Symmetries.

Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling (2018)
Conference Proceeding
Bersch, K., Nuzzo, S., Connor, P. H., Eastwick, C. N., Galea, M., Rolston, R., & Vakil, G. (2018). Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. In Proceedings: 2018 XIII International Conference on Electrical Machines (ICEM) (1116-1122). https://doi.org/10.1109/ICELMACH.2018.8507231

© 2018 IEEE. A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally val... Read More about Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling.

A methodology to remove stator skew in small-medium size synchronous generators via innovative damper cage designs (2018)
Journal Article
Nuzzo, S., Bolognesi, P., Vakil, G., Fallows, D., Gerada, C., Brown, N. L., & Galea, M. (2019). A methodology to remove stator skew in small-medium size synchronous generators via innovative damper cage designs. IEEE Transactions on Industrial Electronics, 66(6), 4926-4307. https://doi.org/10.1109/tie.2018.2864699

This paper proposes and investigates an innovative methodology that can have a significant impact on the market potential of wound field, small-medium size synchronous generators. The technique proposed here is aimed at removing the need for the trad... Read More about A methodology to remove stator skew in small-medium size synchronous generators via innovative damper cage designs.