All Outputs (40)

Analysis of a Dual-Rotor, Toroidal-Winding, Axial-Flux Vernier Permanent Magnet Machine (2017)
Journal Article
Zou, T., Li, D., Qu, R., Li, J., & Jiang, D. (2017). Analysis of a Dual-Rotor, Toroidal-Winding, Axial-Flux Vernier Permanent Magnet Machine. IEEE Transactions on Industry Applications, 53(3), 1920-1930. https://doi.org/10.1109/tia.2017.2657493

In this paper, a vernier permanent magnet (VPM) machine with dual-rotor toroidal-winding axial-flux topology is analyzed. Through the combination of toroidal windings with the rotor-stator-rotor topology, the end winding length of the proposed machin... Read More about Analysis of a Dual-Rotor, Toroidal-Winding, Axial-Flux Vernier Permanent Magnet Machine.

Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines
Presentation / Conference Contribution
Zou, T., Gerada, D., Walker, A., Vakil, G., La Rocca, S., La Rocca, A., Paciura, K., Barden, R., Ernest, E., Zhu, S., Qayyum, N., McQueen, A., Bardalai, A., Ram Kumar, R. M., Marfoli, A., & Gerada, C. (2020, October). Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines. Presented at 2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020), Detroit, MI, USA

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.

A consequent pole, dual rotor, axial flux vernier permanent magnet machine
Presentation / Conference Contribution
Zou, T., Qu, R., Li, J., Li, D., & Wu, L. (2015, March). A consequent pole, dual rotor, axial flux vernier permanent magnet machine. Presented at 2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER), Monte Carlo, Monaco

A consequent pole, dual rotor, axial flux vernier permanent magnet (VPM) machine is developed to reduce magnet usage and increase torque density. Its end winding length is much shorter than that of regular VPM machines due to its toroidal winding con... Read More about A consequent pole, dual rotor, axial flux vernier permanent magnet machine.

Analysis and design of a dual-rotor axial-flux vernier permanent magnet machine
Presentation / Conference Contribution
Zou, T., Qu, R., Li, J., & Li, D. (2015, September). Analysis and design of a dual-rotor axial-flux vernier permanent magnet machine. Presented at 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada

This paper proposes a dual-rotor, toroidal-winding, axial-flux vernier permanent magnet (VPM) machine. By the combination of toroidal windings with the rotor-stator-rotor topology, the end winding length of the machine is significantly reduced when c... Read More about Analysis and design of a dual-rotor axial-flux vernier permanent magnet machine.

Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor
Presentation / Conference Contribution
Jiang, J., Zou, T., La Rocca, A., La Rocca, S., Liu, C., Xu, Z., Gerada, C., Zhu, S., Paciura, K., & Gerada, D. (2023, October). Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor. Presented at 2023 IEEE Vehicle Power and Propulsion Conference (VPPC), Milan, Italy

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.

Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison
Presentation / Conference Contribution
Cutuli, G., Nuzzo, S., Zou, T., Franceschini, G., Gerada, C., & Barater, D. (2023, October). Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison. Presented at 2023 IEEE Energy Conversion Congress and Exposition (ECCE), Nashville, TN, USA

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 and Controllability Trade-Off in Dual Three-Phase Winding PMSMs
Presentation / Conference Contribution
Zhu, S., Qayyum, N., Ernest, E., Paciura, K., Zou, T., & Gerada, C. (2023, October). Design and Controllability Trade-Off in Dual Three-Phase Winding PMSMs. Presented at 2023 IEEE Energy Conversion Congress and Exposition (ECCE), Nashville, TN, USA

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
Presentation / Conference Contribution
Jiang, J., Zou, T., Rocca, S. L., Gerada, D., & Gerada, C. (2023, November). Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor. Presented at 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

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.

Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications
Presentation / Conference Contribution
Petrelli, G., Nuzzo, S., Barater, D., Zou, T., Franceschini, G., & Gerada, C. (2023, July). Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications. Presented at AEIT AUTOMOTIVE 2023 Conference, Modena, Italy

The automotive field is switching to electric propulsion to guarantee a more efficient and sustainable transportation. Several motor configurations can be adopted for this purpose. Permanent magnet-based motors are usually preferred, but they are the... Read More about Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications.

Review and Future Developments of Wound Field Synchronous Motors in Automotive
Presentation / Conference Contribution
Petrelli, G., Nuzzo, S., Zou, T., Barater, D., Franceschini, G., & Gerada, C. (2023, March). Review and Future Developments of Wound Field Synchronous Motors in Automotive. Presented at 2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), Venice, Italy

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
Presentation / Conference Contribution
Cui, M., Zou, T., Li, D., Gerada, D., Qu, R., & Gerada, C. (2022, October). A Novel Airgap Permeance Modeling Approach for Magnetic Field Analysis of Electrical Machines Based on Electrostatic FEA. Presented at IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific 2022), Haining, China

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.

Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application
Presentation / Conference Contribution
Al-Ani, M., Walker, A., Vakil, G., Ramanathan, R., Zou, T., La Rocca, S., La Rocca, A., Gerada, D., Gerada, C., Paciura, K., & McQueen, A. (2019, October). Multi-physics Design Optimisation of PM-assisted Synchronous Reluctance Motor for Traction Application. Presented at IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, Lisbon, Portugal

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.

Rectangular and Random Conductors: AC Losses Evaluations and Manufacturing Considerations
Presentation / Conference Contribution
Preci, E., Valente, G., Bardalai, A., Transi, T., Zou, T., Gerada, D., Degano, M., Buticchi, G., & Gerada, C. (2020, October). Rectangular and Random Conductors: AC Losses Evaluations and Manufacturing Considerations. Presented at IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society, Singapore, Singapore

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.

Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration
Presentation / Conference Contribution
Li, H., Cui, M., Zou, T., Zhang, X., Zhang, H., Xu, Z., Gerada, D., & Gerada, C. (2022, September). Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. Presented at International Conference on Electrical Machines (ICEM 2022), Valencia, Spain

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.

Performance Assessment of Standard Cooling Strategies for Hairpin Windings
Presentation / Conference Contribution
La Rocca, A., La Rocca, S., Zou, T., Liu, C., Moslemin, M., Gerada, C., & Cairns, A. (2022, September). Performance Assessment of Standard Cooling Strategies for Hairpin Windings. Presented at 2022 International Conference on Electrical Machines (ICEM), Valencia, Spain

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.

Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors
Presentation / Conference Contribution
Petrelli, G., Cui, M., Zou, T., Sala, G., La Rocca, A., Barater, D., Franceschini, G., Gerada, D., Degano, M., & Gerada, C. (2022, September). Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors. Presented at International Conference on Electrical Machines (ICEM 2022), Valencia, Spain

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
Presentation / Conference Contribution
Connor, P. H., Khowja, M., La Rocca, A., La Rocca, S., Zou, T., Vakil, G., Walker, A., Gerada, C., & Paciura, K. (2022, September). Investigating Synchronous Reluctance Rotor Performance for Traction Applications against a Permanent Magnet Benchmark. Presented at 2022 International Conference on Electrical Machines (ICEM), Valencia, Spain

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.

Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle
Presentation / Conference Contribution
La Rocca, S., La Rocca, A., Walker, A., Vakil, G., Gerada, D., Al-Ani, M., Zou, T., Ramanathan, R., Gerada, C., McQueen, A., & Paciura, K. (2019, October). Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle. Presented at International Conference on Electrotechnical Complexes and Systems (ICOECS 2019), Ufa, Russia

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.

High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles
Presentation / Conference Contribution
Kumar, R. M. R., Zou, T., La Rocca, A., Vakil, G., Gerada, D., Walker, A., Gerada, C., Paciura, K., McQueen, A., & Fernandes, B. G. (2019, October). High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

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.

Comparative Analysis of AC losses with round magnet wire and Litz wire winding of a High – Speed PM Machine
Presentation / Conference Contribution
Bardalai, A., Zhang, X., Zou, T., Gerada, D., Li, J., & Gerada, C. (2019, August). Comparative Analysis of AC losses with round magnet wire and Litz wire winding of a High – Speed PM Machine. Presented at 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), Harbin, China

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.