All Outputs (16)

Design and Controllability Trade-Off in Dual Three-Phase Winding PMSMs (2023)
Conference Proceeding
Zhu, S., Qayyum, N., Ernest, E., Paciura, K., Zou, T., & Gerada, C. (2023). Design and Controllability Trade-Off in Dual Three-Phase Winding PMSMs. In 2023 IEEE Energy Conversion Congress and Exposition (ECCE) (4147-4154). https://doi.org/10.1109/ecce53617.2023.10361990

Designing and controlling dual three-phase motor poses significant challenges. The conventional mathematical model of such motors only considers fundamental components, thereby failing to capture the complete characteristics of the motors. In this st... Read More about Design and Controllability Trade-Off in Dual Three-Phase Winding PMSMs.

Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor (2023)
Conference Proceeding
Jiang, J., Zou, T., Rocca, S. L., Gerada, D., & Gerada, C. (2023). Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor. In 2023 26th International Conference on Electrical Machines and Systems (ICEMS). https://doi.org/10.1109/icems59686.2023.10345248

Hairpin winding is a key technology for traction motors to meet the step-change requirements on power density and efficiency in electrical vehicle (EV) industry. This winding solution features inherently high slot fill factor and improved heat dissip... Read More about Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor.

Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison (2023)
Conference Proceeding
Cutuli, G., Nuzzo, S., Zou, T., Franceschini, G., Gerada, C., & Barater, D. (2023). Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison. In 2023 IEEE Energy Conversion Congress and Exposition (ECCE) (3796-3801). https://doi.org/10.1109/ecce53617.2023.10362293

This work critically analyzes the possibility of adopting aluminum hairpin windings as alternative to copper in electric traction machines for automotive applications. Copper and aluminum hairpin winding solutions are compared based on two proposed s... Read More about Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison.

Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor (2023)
Conference Proceeding
Jiang, J., Zou, T., La Rocca, A., La Rocca, S., Liu, C., Xu, Z., …Gerada, D. (2023). Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor. In 2023 IEEE Vehicle Power and Propulsion Conference (VPPC). https://doi.org/10.1109/VPPC60535.2023.10403273

Hairpin winding with rectangularly shaped conductors are gradually replacing random winding wound with stranded wires in electric vehicle (EV) industry. As the newgeneration winding technology, hairpin winding features high electromagnetic and therma... Read More about Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor.

Review and Future Developments of Wound Field Synchronous Motors in Automotive (2023)
Conference Proceeding
Petrelli, G., Nuzzo, S., Zou, T., Barater, D., Franceschini, G., & Gerada, C. (2023). Review and Future Developments of Wound Field Synchronous Motors in Automotive. In 2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles \& International Transportation Electrification Conference (ESARS-ITEC). https://doi.org/10.1109/esars-itec57127.2023.10114826

Electric motors are increasingly spreading in the automotive sector, following the progressive electrification of transportation aimed to reduce CO2 emissions and increase sustainability. Most of the employed motors are permanent magnets (PM) based a... Read More about Review and Future Developments of Wound Field Synchronous Motors in Automotive.

A Novel Airgap Permeance Modeling Approach for Magnetic Field Analysis of Electrical Machines Based on Electrostatic FEA (2022)
Conference Proceeding
Cui, M., Zou, T., Li, D., Gerada, D., Qu, R., & Gerada, C. (2022). A Novel Airgap Permeance Modeling Approach for Magnetic Field Analysis of Electrical Machines Based on Electrostatic FEA. In 2022 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific). https://doi.org/10.1109/itecasia-pacific56316.2022.9941839

Detailed airgap permeance information is of great importance for analyzing the operation principle and optimizing the electromagnetic field distribution of an electric machine with unconventional topology. So far, analytical approaches upon calculati... Read More about A Novel Airgap Permeance Modeling Approach for Magnetic Field Analysis of Electrical Machines Based on Electrostatic FEA.

Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration (2022)
Conference Proceeding
Li, H., Cui, M., Zou, T., Zhang, X., Zhang, H., Xu, Z., …Gerada, C. (2022). Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. In 2022 International Conference on Electrical Machines (ICEM) (1906-1912). https://doi.org/10.1109/ICEM51905.2022.9910879

Interior permanent magnet (IPM) machines are subject to rich harmonics of air-gap magnetic field, which correspond to electromagnetic forces and resulting noise, vibration, and harshness (NVH) issues. In this paper, the NVH issue is evaluated based o... Read More about Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration.

Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors (2022)
Conference Proceeding
Petrelli, G., Cui, M., Zou, T., Sala, G., La Rocca, A., Barater, D., …Gerada, C. (2022). Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors. In 2022 International Conference on Electrical Machines (ICEM) (1635-1641). https://doi.org/10.1109/icem51905.2022.9910796

Hairpin windings are becoming current/next generation solutions for traction motors of electric vehicles due to inherently reduced DC power losses and improved heat dissipation capability compared with random windings. Copper-based conductor has been... Read More about Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors.

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.

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.

Rectangular and Random Conductors: AC Losses Evaluations and Manufacturing Considerations (2020)
Conference Proceeding
Preci, E., Valente, G., Bardalai, A., Transi, T., Zou, T., Gerada, D., …Gerada, C. (2020). Rectangular and Random Conductors: AC Losses Evaluations and Manufacturing Considerations. . https://doi.org/10.1109/iecon43393.2020.9254278

This paper presents a comparison between hairpin and random distributed winding in electrical machines for automotive applications. Indeed, the overall performance of an electrical drive system is seriously affected by its winding design. The conside... Read More about Rectangular and Random Conductors: AC Losses Evaluations and Manufacturing Considerations.

Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines (2020)
Conference Proceeding
Zou, T., Gerada, D., Walker, A., Vakil, G., La Rocca, S., La Rocca, A., …Gerada, C. (2020). Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines. In 2020 IEEE Energy Conversion Congress and Exposition (ECCE) (1357-1363). https://doi.org/10.1109/ecce44975.2020.9235712

In recent years, synchronous reluctance (Syn-Rel) machines are research hotspots in variable speed motor drives due to their robust rotor structure and wide constant power speed range (CPSR). More practically, when kVA limitation is considered, embed... Read More about Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines.

Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application (2019)
Conference Proceeding
Al-Ani, M., Walker, A., Vakil, G., Ramanathan, R., Zou, T., La Rocca, S., …McQueen, A. (2019). Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (4353-4359). https://doi.org/10.1109/IECON.2019.8926697

Recently, the synchronous reluctance machine limits have been pushed toward meeting the requirements of traction applications. A skilled electromagnetic architecture of a synchronous reluctance machine with the help of permanent magnets can push the... Read More about Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application.

High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles (2019)
Conference Proceeding
Kumar, R. M. R., Zou, T., La Rocca, A., Vakil, G., Gerada, D., Walker, A., …Fernandes, B. G. (2019). High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1083-1088). https://doi.org/10.1109/IECON.2019.8927523

High power density and high torque density are the fundamental requirements for electric machines used in traction application. The former is obtained by potentially increasing the speed of the machine while the latter by using high energy density ra... Read More about High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles.

Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle (2019)
Conference Proceeding
La Rocca, S., La Rocca, A., Walker, A., Vakil, G., Gerada, D., Al-Ani, M., …Paciura, K. (2019). Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle. In Proceedings: 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS) (1-5). https://doi.org/10.1109/ICOECS46375.2019.8949929

Computational Fluid Dynamics (CFD) was used to carry out a fluid flow and thermal investigation of a high power dense traction machine for electric commercial vehicle. One of the features of the machine design considered is the high Length/Diameter (... Read More about Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle.

Comparative Analysis of AC losses with round magnet wire and Litz wire winding of a High – Speed PM Machine (2019)
Conference Proceeding
Bardalai, A., Zhang, X., Zou, T., Gerada, D., Li, J., & Gerada, C. (2019). Comparative Analysis of AC losses with round magnet wire and Litz wire winding of a High – Speed PM Machine. In 2019 22nd International Conference on Electrical Machines and Systems (ICEMS). https://doi.org/10.1109/ICEMS.2019.8922173

The growing trend of high speed, high power density machines for applications such as EVs, aerospace and machine tools demand these machines to work at higher electrical frequencies. Meanwhile, increasing the fundamental frequency leads to pronounced... Read More about Comparative Analysis of AC losses with round magnet wire and Litz wire winding of a High – Speed PM Machine.