All Outputs (161)

A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines (2018)
Conference Proceeding
Zhu, S., Cox, T., Xu, Z., & Gerada, C. (2018). A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines. In NA

This paper proposes a novel winding layout for the machines with fractional-slot concentrated windings (FSCW) using a stator shifting concept and non-overlapping windings, with which all the non-working harmonics will be completely cancelled or signi... Read More about A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines.

Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry (2018)
Conference Proceeding
La Rocca, S., Pickering, S., Eastwick, C. N., Gerada, C., & Rönnberg, K. (2018). Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

In this paper a typical small low voltage TEFC motor (output power ~10 kW) has been studied using computational fluid dynamics. The complexity of the end winding geometries, often consisting of several insulated copper strands bound together, provide... Read More about Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications (2018)
Conference Proceeding
Li, C., Yang, T., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. (2018). An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to... Read More about An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Numerical investigations of convective phenomena of oil impingement on end-windings (2018)
Conference Proceeding
Connor, P., La Rocca, A., Xu, Z., Eastwick, C., Pickering, S., & Gerada, C. (2018). Numerical investigations of convective phenomena of oil impingement on end-windings.

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 has been modelled, using computational fluid dynamics (CFD), to inform the de... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.

Design and testing of electromechanical actuator for aerospace applications (2018)
Conference Proceeding
Papini, L., Connor, P., Patel, C., Empringham, L., Gerada, C., & Wheeler, P. (2018). Design and testing of electromechanical actuator for aerospace applications. In 2018 25th International Workshop on Electric Drives: Optimization in Control of Electric Drives (IWED2018) - Proceedings (1-6). https://doi.org/10.1109/IWED.2018.8321392

Electromechanical actuators are gaining interest in the aerospace industry within the More Electrical Aircraft (MEA) architecture. The end-goal of fully electric aircraft includes Electromechanical actuation for flight control systems. The design and... Read More about Design and testing of electromechanical actuator for aerospace applications.

Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement (2017)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2017). Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement. In Proceedings - 2017 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (140-145). https://doi.org/10.1109/WEMDCD.2017.7947737

A mathematical model enabling to predict the electromagnetic x-y forces and torque for a given input current in a Multi-Sector Permanent Magnet Synchronous (MSPMS) machine is presented. The rotor static eccentricity is also accounted and the analytic... Read More about Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement.

Position control study of a bearingless multi-sector permanent magnet machine (2017)
Conference Proceeding
Valente, G., Formentini, A., Papini, L., Zanchetta, P., & Gerada, C. (2017). Position control study of a bearingless multi-sector permanent magnet machine. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (8808-8813). https://doi.org/10.1109/IECON.2017.8217548

Bearingless motors combine in the same structure the characteristics of conventional motors and magnetic bearings. Traditional bearingless machines rely on two independent sets of winding for suspension force and torque production, respectively. The... Read More about Position control study of a bearingless multi-sector permanent magnet machine.

A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve (2017)
Conference Proceeding
Xu, Z., La Rocca, A., Arumugam, P., Pickering, S. J., Gerada, C., Bozhko, S., …Zhang, H. (2017). A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (8557-8562). https://doi.org/10.1109/IECON.2017.8217503

This paper proposes a semi-flooded cooling concept for a high speed machine design. The electrical machine considered is for an aircraft starter-generator system where power density and efficiency are crucial. In order to achieve the high power densi... Read More about A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve.

A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems (2017)
Conference Proceeding
Li, C., Lo Calzo, G., Bozhko, S., Gerada, C., Wheeler, P., & Yang, T. (2017). A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems

The neutral point voltage balancing issue for three level Neutral point clamped (NPC) converter has been extensively investigated recently. Different solutions to balance the neutral point have been proposed. However the proposed solutions so far eit... Read More about A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems.

Performance improvement of simplified synchronous generators using an active power filter (2017)
Conference Proceeding
Abu-Jalala, A., Cox, T., Gerada, C., & Rashed, M. (2017). Performance improvement of simplified synchronous generators using an active power filter.

Active power filters (APF) are used to improve power quality and are commonly connected in parallel with the load at the point of common coupling (PCC). They are used to compensate for harmonics from nonlinear loads, for reactive power compensation a... Read More about Performance improvement of simplified synchronous generators using an active power filter.

A system level comparison of drive topologies for high speed electrical machines (2017)
Conference Proceeding
Savi, F., Barater, D., Di Nardo, M., Degano, M., & Gerada, C. (2017). A system level comparison of drive topologies for high speed electrical machines.

This paper presents a comprehensive comparative study among five different converter topologies all designed to drive a 8.5kW-120krpm surface permanent magnet synchronous machine. The study aims at comparing the considered systems in terms of convert... Read More about A system level comparison of drive topologies for high speed electrical machines.

Speed control with load sharing capabilities for multi-three phase synchronous motors (2017)
Conference Proceeding
Galassini, A., Costabeber, A., Gerada, C., Tessarolo, A., & Menis, R. (2017). Speed control with load sharing capabilities for multi-three phase synchronous motors. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (4408-4413). https://doi.org/10.1109/IECON.2017.8216758

The on-going electrification transportation system revolution has already started and the continuous evolution of power electronics allows new and more reliable system layouts and control strategies to be investigated. Mainly, this revolution is driv... Read More about Speed control with load sharing capabilities for multi-three phase synchronous motors.

Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element (2017)
Conference Proceeding
Mahmoud, H., Al-Timimy, A., Degano, M., Di Nardo, M., Bianchi, N., & Gerada, C. (2017). Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element. In Proceedings of the 2017 - IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017 (38-44). https://doi.org/10.1109/DEMPED.2017.8062331

This paper deals with the uniform and non-uniform axial eccentricity analyses of the surface mounted permanent magnet and synchronous reluctance machines. The analyses are carried out using an analytical model for each considered machine. Being the a... Read More about Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element.

Comparative study and optimal design of alternative PM configuration transverse flux linear machine (2017)
Conference Proceeding
Zhu, S., Cox, T., Gerada, C., & Xu, Z. (in press). Comparative study and optimal design of alternative PM configuration transverse flux linear machine.

This paper presents the comparative study and optimal design of a transverse flux linear machine with different PM configurations, viz. surface-mounted and consequent-pole, in which the consequent-pole version is firstly proposed. Firstly, the effect... Read More about Comparative study and optimal design of alternative PM configuration transverse flux linear machine.

Distributed speed control for multi-three phase electrical motors with improved power sharing capability (2017)
Conference Proceeding
Galassini, A., Costabeber, A., Gerada, C., & Tessarolo, A. (2017). Distributed speed control for multi-three phase electrical motors with improved power sharing capability.

This paper proposes a distributed speed control with improved power sharing capability for multi-three phase synchronous machines. This control technique allows the speed to be precisely regulated during power sharing transients among different drive... Read More about Distributed speed control for multi-three phase electrical motors with improved power sharing capability.

Comparative study of novel tubular flux-reversal transverse flux permanent magnet linear machine (2017)
Conference Proceeding
Zhu, S., Cox, T., & Gerada, C. (2017). Comparative study of novel tubular flux-reversal transverse flux permanent magnet linear machine.

This paper presents a novel tubular flux-reversal transverse flux permanent magnet linear machine (FR-TFPMLM), in which both magnet and armature winding are located at the short primary side whereas the secondary side is composed of only magnetic ste... Read More about Comparative study of novel tubular flux-reversal transverse flux permanent magnet linear machine.

Use of optical fibres for multi-parameter monitoringin electrical AC machines (2017)
Conference Proceeding
Hind, D. M., Gerada, C., Galea, M., Borg Bartalo, J., Fabian, M., Sun, T., & Grattan, K. T. (2017). Use of optical fibres for multi-parameter monitoringin electrical AC machines.

This paper describes a new approach to multi-parameter monitoring for electrical AC machines. It is demonstrated that speed, torque and temperature can be measured using optical fibres incorporating sensors in the form of fibre Bragg gratings (FBGs)... Read More about Use of optical fibres for multi-parameter monitoringin electrical AC machines.

Thermal investigation on HSPM with new alloy sleeve (2017)
Conference Proceeding
Zhang, X., Li, W., Zhang, H., Gerada, C., Gerada, D., & Li, J. (2017). Thermal investigation on HSPM with new alloy sleeve. . https://doi.org/10.1109/ICEMS.2017.8056423

This paper presents a developed copper-iron alloy which made as the rotor sleeve in a high speed permanent magnetic machine (HSPMG), whist investigating its benefits in improve machine thermal performance. The features of the new alloy is experimenta... Read More about Thermal investigation on HSPM with new alloy sleeve.

Holistic electrical machine optimization for system integration (2017)
Conference Proceeding
Gerada, D., Golovanov, D., Xu, Z., Papini, L., Degano, M., Zhang, H., & Gerada, C. (2017). Holistic electrical machine optimization for system integration. In 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) (980-985). https://doi.org/10.1109/IFEEC.2017.7992174

The power density of electrical machines required for transport applications has become a critical aspect and target of optimization. This paper looks at the development aspects of a multi-domain tool to aid for system-level optimization of electrica... Read More about Holistic electrical machine optimization for system integration.

Speed control for multi-three phase synchronous electrical motors in fault condition (2017)
Conference Proceeding
Galassini, A., Costabeber, A., & Gerada, C. (2017). Speed control for multi-three phase synchronous electrical motors in fault condition.

The growth of electrification transportation systems is an opportunity for delving into new feasible solutions for more reliable and fault tolerant arrangements. So far, many investigations distant from the market have been carried out. Most of the w... Read More about Speed control for multi-three phase synchronous electrical motors in fault condition.