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Manufacturable Edgewise Winding Solutions Considering Parallel Slot and Parallel Tooth Stator Structures (2023)
Conference Proceeding
George, L., Walker, A., Zhang, F., Vakil, G., & Gerada, C. (2023). Manufacturable Edgewise Winding Solutions Considering Parallel Slot and Parallel Tooth Stator Structures. . https://doi.org/10.1109/oncon60463.2023.10431188

Due to climate concerns, the push towards transportation electrification to deliver electric machines capable of high-power density performance is becoming increasingly critical. A key component of this is the structure and manufacture of the winding... Read More about Manufacturable Edgewise Winding Solutions Considering Parallel Slot and Parallel Tooth Stator Structures.

A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs (2023)
Conference Proceeding
Zhu, G., Xu, Z., Zhang, F., Gerada, C., & Gerada, D. (2023). A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs. In 26th International Conference on Electrical Machines and Systems (ICEMS). https://doi.org/10.1109/icems59686.2023.10344616

Thermal management is critical for high-power-density permanent magnet synchronous machines (PMSMs). To realize the efficient and effective design optimization of self-ventilated air cooling systems for PMSMs, in this paper, a Taguchi-preconditioned... Read More about A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs.

Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines (2023)
Conference Proceeding
Di Nardo, M., Ilkhani, M. R., Wang, M., Degano, M., Gerada, C., Sala, G., …Hoppert, M. (2023). Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines. In 2023 IEEE International Electric Machines & Drives Conference (IEMDC). https://doi.org/10.1109/IEMDC55163.2023.10238954

This paper investigates the possibility to control the radial displacements of the shaft of an electrical machine equipped with a multi-three-phase winding arrangement with the aim of reducing the related vibrations. A comprehensive dynamic modeling... Read More about Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines.

AC/DC Converter Topologies Comparison for More Electric Aircraft Applications (2022)
Conference Proceeding
Khera, F. A., Gerada, C., Bozhko, S., & Wheeler, P. W. (2022). AC/DC Converter Topologies Comparison for More Electric Aircraft Applications. In 2022 IEEE 7th Southern Power Electronics Conference (SPEC). https://doi.org/10.1109/SPEC55080.2022.10058465

This paper compares the potential AC/DC power converter topologies that are appropriate for medium voltage and medium/high power aircraft applications. The power converter's rated power and the DC distribution voltage level in this application assume... Read More about AC/DC Converter Topologies Comparison for More Electric Aircraft Applications.

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.

Performance Assessment of Standard Cooling Strategies for Hairpin Windings (2022)
Conference Proceeding
La Rocca, A., La Rocca, S., Zou, T., Liu, C., Moslemin, M., Gerada, C., & Cairns, A. (2022). Performance Assessment of Standard Cooling Strategies for Hairpin Windings. In 2022 International Conference on Electrical Machines (ICEM) (1163-1169). https://doi.org/10.1109/icem51905.2022.9910733

This paper aims to assess the performance of some standard cooling strategies which are commonly used in traction electric motors for electric vehicles (EVs) employing hairpin windings. The use of such type of coils does normally lead to higher power... Read More about Performance Assessment of Standard Cooling Strategies for Hairpin Windings.

Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor (2022)
Conference Proceeding
Vannini, A., Simonelli, C., Marfoli, A., Papini, L., Bolognesi, P., & Gerada, C. (2022). Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor. . https://doi.org/10.1109/icem51905.2022.9910937

Line-Start Permanent Magnet Motors are a valid alternative to conventional three-phase induction motors and wound-field synchronous machines for fixed-speed applications direct fed by the grid, targeting superior efficiency and high reliability. A ge... Read More about Modelling, Analysis, and Design of a Line-Start Permanent Magnet Synchronous Motor.

Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications (2022)
Conference Proceeding
Tameemi, A., Degano, M., Di Nardo, M., Murataliyev, M., Gerada, D., Xu, Z., & Gerada, C. (2022). Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications. In 2022 International Conference on Electrical Machines (ICEM) (807-813). https://doi.org/10.1109/icem51905.2022.9910911

Permanent magnet synchronous motors are very suitable in applications demanding high power density with high performance requirements, such as in aerospace actuators. Achieving high performance targets while keeping the total weight of the electrical... Read More about Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications.

Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application (2022)
Conference Proceeding
Dave, N., Gerada, D., Vakil, G., Zhang, H., Shi, B., Zhang, F., …Gerada, C. (2022). Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application. In 2022 International Conference on Electrical Machines (ICEM) (2094-2099). https://doi.org/10.1109/ICEM51905.2022.9910584

This paper aims to present the feasibility and advantages of slotless motors for electric aircraft applications. Currently, eVTOL (electric vertical takeoff and landing) aircraft are equipped with a slotted motor with concentrated windings and an out... Read More about Fast Sizing Tool and Optimization Technique for Concentrated Wound Slotless Outer Rotor Motor for eVTOL Application.

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.

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.

Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers (2022)
Conference Proceeding
Vannini, A., Papini, L., Marfoli, A., Gerada, C., & Bolognesi, P. (2022). Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers. In 2022 International Conference on Electrical Machines (ICEM) (2074-2080). https://doi.org/10.1109/icem51905.2022.9910897

Synchronous Homopolar Generators represent an attractive solution for the future of power generation in propulsive systems based on hybrid turbo-electric drivetrains. In fact they feature both a fully controllable excitation, similar to wound-field s... Read More about Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers.

Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines (2022)
Conference Proceeding
Dave, N., Gerada, D., Vakil, G., Zhang, H., Li, J., & Gerada, C. (2022). Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines. In 2022 International Conference on Electrical Machines (ICEM) (1204-1210). https://doi.org/10.1109/icem51905.2022.9910580

From the existing literature, the open circuit field due to different magnetisations of the rotor magnets is known. This includes field due to parallel, radial and Halbach magnetisation. This paper presents the generalised analytical model to represe... Read More about Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines.

Carbon Emission Analysis of Electrical Machines (2021)
Conference Proceeding
Zhang, X., Xu, Z., Gerada, C., & Gerada, D. (2021). Carbon Emission Analysis of Electrical Machines. In 2021 24th International Conference on Electrical Machines and Systems (ICEMS) (1678-1683). https://doi.org/10.23919/ICEMS52562.2021.9634279

The industry places increased importance on carbon reduction. Many are focused on lowering the fuel consumption of electrical machines, however, carbon emissions from the acquisition of raw materials and the energy consumption of manufacturing proces... Read More about Carbon Emission Analysis of Electrical Machines.

Influence of the Magnetic Load on High Speed Synchronous Reluctance Machines Design (2021)
Conference Proceeding
Gallicchio, G., Palmieri, M., Cupertino, F., Di Nardo, M., Degano, M., & Gerada, C. (2021). Influence of the Magnetic Load on High Speed Synchronous Reluctance Machines Design. In IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON48115.2021.9589972

Synchronous reluctance machines are becoming a widespread solution in many engineering areas thanks to their simple rotor structure, the absence of rare-earth permanent magnets and high efficiency. The design of such machines is a widely investigated... Read More about Influence of the Magnetic Load on High Speed Synchronous Reluctance Machines Design.

Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine (2021)
Conference Proceeding
Marfoli, A., Nardo, M. D., Garvey, S., Degano, M., Vashisht, R., Turnbull, R., & Gerada, C. (2021). Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine. In 2021 IEEE Energy Conversion Congress and Exposition (ECCE) (4646-4653). https://doi.org/10.1109/ECCE47101.2021.9595524

This paper presents a general multi-harmonics analytical model able to predict both torque and force behaviour of a multi-phase permanent magnet synchronous machine. This machine topology can be adopted in bearingless applications and in application... Read More about Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine.

Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study (2021)
Conference Proceeding
Tang, M., Lang, X., Gerada, C., Huang, Z., Velmurugan, G., Zanchetta, P., …Yang, T. (2021). Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study. In 2021 IEEE Transportation Electrification Conference and Expo (ITEC) (670-676). https://doi.org/10.1109/ITEC51675.2021.9490130

High speed multi-phase machine has drawn widely attention towards the development of electrification due to its high power density and fault tolerant capability. A 50 kW high speed nine-phase permanent magnet synchronous machine has been designed for... Read More about Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study.

Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines (2021)
Conference Proceeding
De Gaetano, D., Sala, G., Degano, M., & Gerada, C. (2021). Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines. In 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (137-142). https://doi.org/10.1109/wemdcd51469.2021.9425662

This paper presents the analysis of multi-harmonic current injection in multi-three phase surface permanent magnet (SPM) machines. An analytical model, extended to a generic harmonic order, is used to describe and determine the no load flux density,... Read More about Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines.

Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft (2021)
Conference Proceeding
Hebala, A., Nuzzo, S., Connor, P. H., Giangrande, P., Gerada, C., & Galea, M. (2021). Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft. In 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (343-348). https://doi.org/10.1109/wemdcd51469.2021.9425667

This paper investigates the design of a 12-seater aircraft electric propulsion motor (ProMo). The design procedures aim to improve the performance of a previously designed motor, while adding further restrictions to the electrical and thermal boundar... Read More about Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft.

Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control (2021)
Conference Proceeding
Nasr, A., Gu, C., Zhao, W., Bozhko, S., & Gerada, C. (2021). Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control. In 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (204-209). https://doi.org/10.1109/wemdcd51469.2021.9425636

The interest in model predictive direct torque control (MP-DTC) for high-performance dynamic control of electric drives has been growing. Unlike the conventional direct torque control (DTC), MP-DTC can achieve optimal voltage selection by predicting... Read More about Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control.