All Outputs (253)

Electrical Machine Rotor Shielding for Low Cost Electrical Drive
Presentation / Conference Contribution
Al-Ani, M., Vakil, G., & Gerada, C. (2018, June). Electrical Machine Rotor Shielding for Low Cost Electrical Drive. Presented at 2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018, Long Beach, California, USA

Electrical machine rotor shielding has been proposed for high-speed electrical machines, i.e. ≥50krpm, where a smooth current waveform becomes difficult and costly to generate due to the required high switching frequency. The rotor shielding is used... Read More about Electrical Machine Rotor Shielding for Low Cost Electrical Drive.

Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization
Presentation / Conference Contribution
Mahmoud, H., Degano, M., Bacco, G., Bianchi, N., & Gerada, C. (2018, September). Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization. Presented at 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, Oregon, USA

The complex rotor structure of synchronous reluctance machines causes a high harmonic content in the air-gap flux density and then flux density fluctuations in different iron parts. The importance of determining accurately the total iron losses in th... Read More about Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization.

A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation
Presentation / Conference Contribution
Wang, S., Degano, M., Kang, J., Galassini, A., & Gerada, C. (2018, September). A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation. Presented at 2018 XIII International Conference on Electrical Machines (ICEM), Alexandroupoli, Greece

Maximum torque per ampere control (MTPA) takes full advantage of the reluctance torque aiming at the minimum copper loss, which can increase the torque output under the minimum current conditions. The traditional MTPA method makes use of equations wi... Read More about A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation.

Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines
Presentation / Conference Contribution
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018, May). Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines. Presented at 2018 International Power Electronics Conference (IPEC-Niigata 2018-ECCE Asia), Niigata, Japan

This paper presents a fault tolerant study of a multiphase sectored permanent magnet synchronous machine involving a tripel three-phase winding. The machine electromagnetic model is written in a general way so that it can be extended and applied to a... Read More about Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines.

Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability
Presentation / Conference Contribution
Al-Ani, M., Mahmoud, H., Degano, M., & Gerada, C. (2018, September). Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability. Presented at 23rd International Conference on Electrical Machines (ICEM 2018), Alexandroupoli, Greece

© 2018 IEEE. This paper presents a comparative analysis of double rotor synchronous reluctance machines. Different topologies of the proposed machine have been investigated, such as double rotor with double-sided stator and double rotor with single-s... Read More about Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability.

A PM-Assisted Synchronous Reluctance Motor with Two Slot-Pitch Winding
Presentation / Conference Contribution
Zhu, S., Cox, T., Xu, Z., & Gerada, C. (2020, November). A PM-Assisted Synchronous Reluctance Motor with Two Slot-Pitch Winding. Presented at 2020 23rd International Conference on Electrical Machines and Systems (ICEMS), Hamamatsu, Japan

This paper presents a novel electric motor solution to tackle the increasing demand on the traction motor for electric vehicles. The proposed electric motor has a 24 slots 10 poles fractional slot two-slot pitch winding and a PM-assisted synchronous... Read More about A PM-Assisted Synchronous Reluctance Motor with Two Slot-Pitch Winding.

Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes
Presentation / Conference Contribution
Trentin, A., Hind, D., Degano, M., Tighe, C., Arevalo, S. L., Yang, L., Johnson, M., Wheeler, P., Gerada, C., Harris, A., & Packwood, M. (2018, September). Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes. Presented at 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA

The majority of commercial Silicon Carbide (SiC) MOSFET based power modules available on the market today also include SiC Schottky diodes placed in anti-parallel with the MOSFETs. Using an accurate electrical and thermal simulation model this paper... Read More about Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes.

Simplified Analytical Machine Sizing for Surface Mounted Permanent Magnet Machines
Presentation / Conference Contribution
Xie, P., Ramanathan, R., Vakil, G., & Gerada, C. (2019, May). Simplified Analytical Machine Sizing for Surface Mounted Permanent Magnet Machines. Presented at IEMDC 2019 - International Electric Machines & Drives Conference, San Diego, California, USA

This paper proposes a simple analytical machine sizing process for a three-phase surface mounted permanent magnet synchronous machines appropriate for both system level analysis and preliminary machine design. For system-level analysis, the proposed... Read More about Simplified Analytical Machine Sizing for Surface Mounted Permanent Magnet Machines.

Design Considerations of Fault-Tolerant Electromechanical Actuator Systems for More Electric Aircraft (MEA)
Presentation / Conference Contribution
Zhu, S., Cox, T., Xu, Z., Gerada, C., & Li, C. (2018, September). Design Considerations of Fault-Tolerant Electromechanical Actuator Systems for More Electric Aircraft (MEA). Presented at IEEE Energy Conversion Congress and Exposition ( ECCE 2018), Portland, OR

This paper studies the concerns such as architecture and reliability in the deployment of electromechanical actuator (EMA) in the actuation system for more electric aircraft (MEA). First, the reliability of the actuation system architecture such as c... Read More about Design Considerations of Fault-Tolerant Electromechanical Actuator Systems for More Electric Aircraft (MEA).

Design and testing of PMSM for aerospace EMA applications
Presentation / Conference Contribution
Giangrande, P., Madonna, V., Sala, G., Kladas, A., Gerada, C., & Galea, M. (2018, October). Design and testing of PMSM for aerospace EMA applications. Presented at IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, Washington, DC

The more-electric aircraft initiative represents an important technology step-change for the aircraft industry. The reduction of both fuel consumption and environmental impact are leading to alternative solutions for actuating the flight control surf... Read More about Design and testing of PMSM for aerospace EMA applications.

A SiC based 2-Level Power Converter for Shape-and-Space-Restricted Aerospace Applications
Presentation / Conference Contribution
Nasir, U., Chowdhury, S., La Rocca, A., Chen, Y., Yang, T., Wheeler, P., Gerada, C., & Bozhko, S. (2019, July). A SiC based 2-Level Power Converter for Shape-and-Space-Restricted Aerospace Applications. Presented at 2019 IEEE 13th International Conference on Power Electronics and Drive Systems (PEDS), Toulouse, France

Recent advancements in the power electronic device technologies, such as wide-band-gap devices including Silicon-Carbide (SiC) and Galium-Nitride (GaN), are acting as an enabling factor in development of compact power electronic systems. More specifi... Read More about A SiC based 2-Level Power Converter for Shape-and-Space-Restricted Aerospace Applications.

Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor
Presentation / Conference Contribution
Connor, P. H., La Rocca, A., Xu, Z., Degano, M., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2019, May). Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor. Presented at 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019, San Diego, USA

This paper presents a computational fluid dynamics conjugate heat transfer analysis of internal and external cooling paths for a hollow high-speed permanent magnet rotor. Extracting magnet losses from high-speed permanent magnet rotors is challenging... Read More about Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor.

Carbon Emission Analysis of Electrical Machines
Presentation / Conference Contribution
Zhang, X., Xu, Z., Gerada, C., & Gerada, D. (2021, October). Carbon Emission Analysis of Electrical Machines. Presented at 24th International Conference on Electrical Machines and Systems (ICEMS 2021), Gyeongju, Korea, Republic of

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.

Sizing, design, and modelling of aerospace electric drive system with long feeder cables
Presentation / Conference Contribution
Xie, P., Vakil, G., & Gerarda, C. (2019, May). Sizing, design, and modelling of aerospace electric drive system with long feeder cables. Presented at IEMDC 2019 - International Electric Machines & Drives Conference, San Diego, California, USA

The aviation industry is tending towards more electric aircraft, replacing conventionally pneumatic, hydraulic, and mechanical systems with electrical solutions. The electrification of actuators is motivated by increased efficiency, reduced maintenan... Read More about Sizing, design, and modelling of aerospace electric drive system with long feeder cables.

Numerical investigations of convective phenomena of oil impingement on end-windings
Presentation / Conference Contribution
Connor, P. H., La Rocca, A., Xu, Z., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2018, April). Numerical investigations of convective phenomena of oil impingement on end-windings. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer have been modelled, using computational fluid dynamics (CFD), to inform the d... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.

On the design of partial discharge-free low voltage electrical machines
Presentation / Conference Contribution
Madonna, V., Giangrande, P., Zhao, W., Zhang, H., Gerada, C., & Galea, M. (2019, May). On the design of partial discharge-free low voltage electrical machines. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, California, USA

Modern electrical machines employed in transportation applications are required to provide high performance in terms of power (and torque) density. At the same time, being these applications safety-critical, a significant level of reliability and/or... Read More about On the design of partial discharge-free low voltage electrical machines.

Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault
Presentation / Conference Contribution
Giangrande, P., Madonna, V., Nuzzo, S., Gerada, C., & Galea, M. (2019, May). Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, California, USA

© 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.

Dual-Rotor Permanent Magnet Motor for Electric Superbike
Presentation / Conference Contribution
Golovanov, D., Galassini, A., Flanagan, L., Gerada, D., Xu, Z., & Gerada, C. (2019, May). Dual-Rotor Permanent Magnet Motor for Electric Superbike. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, CA, USA

The demand on high-performance electrical machines has significantly increased for aerospace and transportation industries in recent years. A racing electric motorbike is a suitable platform to validate and prove new concepts and machine topologies b... Read More about Dual-Rotor Permanent Magnet Motor for Electric Superbike.

Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines
Presentation / Conference Contribution
Wen, Z., Valente, G., Formentini, A., Papini, L., Zanchetta, P., & Gerada, C. (2019, May). Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, CA, USA

This paper investigates the single-phase open-circuit fault of a bearingless multi-sector PM synchronous machine. The mathematical model of the suspension force and torque generation is developed for both healthy and faulty conditions. The model is w... Read More about Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines.

Thermo-Mechanical Modelling of Bearing Chambers of a High-Speed Starter/Generator
Presentation / Conference Contribution
Rocca, A. L., Connor, P. H., Xu, Z., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2019, May). Thermo-Mechanical Modelling of Bearing Chambers of a High-Speed Starter/Generator. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, CA, USA

This paper describes the thermal-mechanical characterisation methodology for the bearing chambers of a high-speed (32,000 rpm) electrical starter/generator [1]; presenting a low cost analysis approach and design guideline for future machines. The met... Read More about Thermo-Mechanical Modelling of Bearing Chambers of a High-Speed Starter/Generator.