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Axial position estimation of conical shaped motor for green taxiing application (2016)
Conference Proceeding
Roggia, S., Galea, M., Gerada, C., & Cupertino, F. (2016). Axial position estimation of conical shaped motor for green taxiing application. In 2016 IEEE Energy Conversion Congress and Exposition (ECCE) - Proceedings (1-6). https://doi.org/10.1109/ECCE.2016.7854895

This paper considers the possibility of adopting a conical shaped motor for Green Taxiing (GT) application. This topology of motor has been selected in order to obviate the presence of external declutching system (i.e. mechanical or electromagnetic c... Read More about Axial position estimation of conical shaped motor for green taxiing application.

Active Magnetic Bearing system design featuring a predictive current control (2016)
Conference Proceeding
Papini, L., Tarisciotti, L., Costabeber, A., Gerada, C., & Wheeler, P. (2016). Active Magnetic Bearing system design featuring a predictive current control. In IECON 2016 Proceedings - 42nd Annual Conference of the IEEE Industrial Electronics Society (3217-3222). https://doi.org/10.1109/IECON.2016.7793444

Active Magnetic Bearing (AMB) technology is becoming attractive for several reasons such as high speed operations, high reliability and vibrations exemption. Moreover, AMB can behave as active vibration dampers and provide a real-time control of the... Read More about Active Magnetic Bearing system design featuring a predictive current control.

History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels (2016)
Conference Proceeding
Yang, T., Cox, T., Degano, M., Bozhko, S., & Gerada, C. (2016). History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels.

Due to developments in power electronics, electric machines, energy storage and control, electric propulsion and integrated electrical power systems have become major trends for commercial and naval vessels. This is mainly due to the fact that the us... Read More about History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels.

Multistress characterization of fault mechanisms in aerospace electric actuators (2016)
Journal Article
Barater, D., Immovilli, F., Soldati, A., Buticchi, G., Franceschini, G., Gerada, C., & Galea, M. (in press). Multistress characterization of fault mechanisms in aerospace electric actuators. IEEE Transactions on Industry Applications, 53(2), https://doi.org/10.1109/TIA.2016.2633948

The concept behind the More Electric Aircraft (MEA) is the progressive electrification of on-board actuators and services. It is a way to reduce or eliminate the dependence on hydraulic, mechanical and the bleed air/pneumatic systems and pursue effic... Read More about Multistress characterization of fault mechanisms in aerospace electric actuators.

Lifetime consumption and degradation analysis of the winding insulation of electrical machines (2016)
Conference Proceeding
Sciascera, C., Galea, M., Giangrande, P., & Gerada, C. (in press). Lifetime consumption and degradation analysis of the winding insulation of electrical machines.

In this paper, a novel multi-stress model which estimates the lifetime of the winding insulation relative to its duty cycle is proposed and investigated. With an adequate implementation of this model, then an electrical machine can be designed not on... Read More about Lifetime consumption and degradation analysis of the winding insulation of electrical machines.

Development and design of a high performance traction machine for the FreedomCar 2020 traction machine targets (2016)
Conference Proceeding
Walker, A., Galea, M., Gerada, D., Gerada, C., Mebraki, A., & Brown, N. (2016). Development and design of a high performance traction machine for the FreedomCar 2020 traction machine targets. In Proceedings - 2016 XXII International Conference on Electrical Machines (ICEM) (1611-1617). https://doi.org/10.1109/ICELMACH.2016.7732739

This paper details the design process of a high performance electrical machine with the objective of achieving US Department of Energy FreedomCar 2020 targets, namely meeting the high speed efficiency requirement without sacrificing performance elsew... Read More about Development and design of a high performance traction machine for the FreedomCar 2020 traction machine targets.

Assessment of cooling methods for increased power density in electrical machines (2016)
Conference Proceeding
Tighe, C., Gerada, C., & Pickering, S. (in press). Assessment of cooling methods for increased power density in electrical machines.

A comprehensive thermal analysis of three different electrical machines is presented, with a view of identifying design aspects that can be exploited to achieve higher power density. A review of some novel cooling methods is initially made. Following... Read More about Assessment of cooling methods for increased power density in electrical machines.

Novel integrative options for passive filter inductor in high speed AC drives (2016)
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Wheeler, P., & Patel, C. (2016). Novel integrative options for passive filter inductor in high speed AC drives. In IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON.2016.7793661

This paper presents novel integration options for passive inductor which include: motor-shaped rotational and motor-shaped rotor-less inductor for high speed motor drive system. The novel options have been designed and their performance is compared w... Read More about Novel integrative options for passive filter inductor in high speed AC drives.

High speed drives review: machines, converters and applications (2016)
Conference Proceeding
Abebe, R., Di Nardo, M., Gerada, D., Lo Calzo, G., Papini, L., & Gerada, C. (2016). High speed drives review: machines, converters and applications.

The development of new power electronic device and high performance magnetic materials are the main technological factors that have led both industries and research community to focus their attention on high speed electrical drives. Several papers ha... Read More about High speed drives review: machines, converters and applications.

Trade-off analysis and design of a high power density PM machine for flooded industrial pump (2016)
Conference Proceeding
Al-Timimy, A., Degano, M., Xu, Z., Lo Calzo, G., Giangrande, P., Galea, M., …Zhang, H. (2016). Trade-off analysis and design of a high power density PM machine for flooded industrial pump.

This paper presents the trade-off analysis and design of a high power-density machine for industrial pump applications. The developed permanent magnet synchronous machine drives an electric, oil flooded pump. Different slot/pole combination and windi... Read More about Trade-off analysis and design of a high power density PM machine for flooded industrial pump.

Improved damper cage design for salient-pole synchronous generators (2016)
Journal Article
Nuzzo, S., Degano, M., Galea, M., Gerada, C., Gerada, D., & Brown, N. (2017). Improved damper cage design for salient-pole synchronous generators. IEEE Transactions on Industrial Electronics, 64(3), 1958-1970. https://doi.org/10.1109/TIE.2016.2619321

© 2016 IEEE. The benefits of implementing a damper winding in salient-pole synchronous generators are widely known and well consolidated. It is also well known that such a winding incurs extra losses in the machine due to a number of reasons. In orde... Read More about Improved damper cage design for salient-pole synchronous generators.

Design and initial testing of a high speed 45 kW switched reluctance drive for aerospace application (2016)
Journal Article
Bartolo, J. B., Degano, M., Espina, J., & Gerada, C. (2017). Design and initial testing of a high speed 45 kW switched reluctance drive for aerospace application. IEEE Transactions on Industrial Electronics, 64(2), 988-997. https://doi.org/10.1109/TIE.2016.2618342

This paper presents innovative research towards the development of a 45 kW high speed switched reluctance drive as an alternative starter-generator for future aero-engines. To perform such a function the machine had to be designed with a very wide co... Read More about Design and initial testing of a high speed 45 kW switched reluctance drive for aerospace application.

2-D analytical model for dual-stator machines with permanent magnets (2016)
Conference Proceeding
Golovanov, D., Galea, M., & Gerada, C. (2016). 2-D analytical model for dual-stator machines with permanent magnets.

This paper proposes an analytical model that considers the torque characteristics and results in an optimum geometry for dual-stator synchronous machines with permanent magnets. The distribution of the magnetic field in the air gap is obtained by sol... Read More about 2-D analytical model for dual-stator machines with permanent magnets.

Stator and rotor vent modelling in a MVA rated synchronous machine (2016)
Conference Proceeding
Connor, P. H., Eastwick, C., Pickering, S. J., Gerada, C., & Rolston, R. (2016). Stator and rotor vent modelling in a MVA rated synchronous machine. In 2016 XXII International Conference on Electrical Machines (ICEM) (571-577). https://doi.org/10.1109/ICELMACH.2016.7732583

An investigation into the solution dependence of a conjugate heat transfer computational fluid dynamics (CFD) model of a synchronous generator, with respect to meshing, has been carried out. Utilising CFD as a tool for investigating the airflow and t... Read More about Stator and rotor vent modelling in a MVA rated synchronous machine.

Design optimization of Halbach array permanent magnet motor to achieve sensorless performance using genetic algorithm (2016)
Journal Article
Caner, M., Gerada, C., Asher, G., & Özer, T. (2016). Design optimization of Halbach array permanent magnet motor to achieve sensorless performance using genetic algorithm. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 35(5), https://doi.org/10.1108/COMPEL-06-2015-0218

Purpose The purpose of this paper is to investigate Halbach array effects in surface mounted permanent magnet machine (SMPM) in terms of both self-sensing and torque capabilities. A comparison between a conventional SMPM, which has radially magnet... Read More about Design optimization of Halbach array permanent magnet motor to achieve sensorless performance using genetic algorithm.

Structural design optimization of a high speed synchronous reluctance machine (2016)
Conference Proceeding
Di Nardo, M., Lo Calzo, G., Galea, M., & Gerada, C. (2016). Structural design optimization of a high speed synchronous reluctance machine.

Synchronous reluctance machines, including the permanent magnet assisted variants are competitive motor topologies if the application requires high efficiency and a cost effective solution with a high flux weakening capability. However, increasing sp... Read More about Structural design optimization of a high speed synchronous reluctance machine.

Short term duty electrical machines (2016)
Conference Proceeding
Arumugam, P., & Gerada, C. (2016). Short term duty electrical machines.

This paper presents a design of a short term duty electrical machine working in an extreme environment consisting of 80oC ambient temperature and altitudes of over 30,000m. Higher power density is a key factor in the design wherein the machine’s oper... Read More about Short term duty electrical machines.

Distributed current control for multi-three phase synchronous machines in fault conditions (2016)
Conference Proceeding
Galassini, A., Costabeber, A., Degano, M., Gerada, C., Tessarolo, A., & Castellan, S. (2016). Distributed current control for multi-three phase synchronous machines in fault conditions.

Among challenges and requirements of on-going electrification process and future transportation systems there is demand for arrangements with both increased fault tolerance and reliability. Next aerospace, power-train and automotive systems exploitin... Read More about Distributed current control for multi-three phase synchronous machines in fault conditions.

Thermal management of a permanent magnet motor for an directly coupled pump (2016)
Conference Proceeding
Xu, Z., Al-Timimy, A., Degano, M., Giangrande, P., Lo Calzo, G., Zhang, H., …Gerada, C. (2016). Thermal management of a permanent magnet motor for an directly coupled pump.

A high speed permanent magnet motor is designed for a flooded industrial pump. Oil in the pump is used to cool the motor. Due to the limitation of space and mass requirement for the application, thermal management is one of the main challenges. This... Read More about Thermal management of a permanent magnet motor for an directly coupled pump.

Radial force control of multi-sector permanent magnet machines (2016)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2016). Radial force control of multi-sector permanent magnet machines.

The paper presents an alternative radial force control technique for a Multi-Sector Permanent Magnet machine (MSPM). Radial force control has been widely investigated for a variety of bearingless machines and can be also applied to conventional PMSM... Read More about Radial force control of multi-sector permanent magnet machines.

Design and optimization of a high power density machine for flooded industrial pump (2016)
Conference Proceeding
Al-Timimy, A., Degano, M., Giangrande, P., Lo Calzo, G., Xu, Z., Galea, M., …Xia, L. (2016). Design and optimization of a high power density machine for flooded industrial pump.

This paper presents the design optimization procedure of a high power-density, permanent magnet synchronous machine for industrial pump applications. The designed machine drives an electric, oil flooded pump. In order to achieve higher torque-density... Read More about Design and optimization of a high power density machine for flooded industrial pump.

High-Speed Solid Rotor Permanent Magnet Machines: Concept and Design (2016)
Journal Article
Arumugam, P., Xu, Z., La Rocca, A., Vakil, G., Dickinson, M., Amankwah, E. K., …Pickering, S. (2016). High-Speed Solid Rotor Permanent Magnet Machines: Concept and Design. IEEE Transactions on Transportation Electrification, 2(3), 391-400. https://doi.org/10.1109/TTE.2016.2592684

© 2015 IEEE. This paper proposes a novel solid rotor topology for an interior permanent magnet (IPM) machine, adopted in this case for an aircraft starter-generator design. The key challenge in the design is to satisfy two operating conditions that a... Read More about High-Speed Solid Rotor Permanent Magnet Machines: Concept and Design.

A modular speed-drooped system for high reliability integrated modular motor drives (2016)
Journal Article
Galassini, A., Costabeber, A., Gerada, C., Buticchi, G., & Barater, D. (2016). A modular speed-drooped system for high reliability integrated modular motor drives. IEEE Transactions on Industry Applications, 52(4), 3124-3132. https://doi.org/10.1109/TIA.2016.2540608

Future transportation challenges include a considerable reduction in pollutant emissions at a time when significant increase in demand is predicted. One of the enabling solutions is the electrification of transport systems as this should lead to impr... Read More about A modular speed-drooped system for high reliability integrated modular motor drives.

Impact of Soft Magnetic Material on Design of High-Speed Permanent-Magnet Machines (2016)
Journal Article
Fernando, N., Vakil, G., Arumugam, P., Amankwah, E. K., Gerada, C., & Bozhko, S. (2017). Impact of Soft Magnetic Material on Design of High-Speed Permanent-Magnet Machines. IEEE Transactions on Industrial Electronics, 64(3), 2415-2423. https://doi.org/10.1109/TIE.2016.2587815

© 2016 IEEE. This paper investigates the effect of two soft magnetic materials on a high-speed machine design, namely, 6.5% silicon steel and cobalt-iron alloy. The effect of design parameters on the machine performance as an aircraft starter-generat... Read More about Impact of Soft Magnetic Material on Design of High-Speed Permanent-Magnet Machines.

Non-linear circuit based model of PMSM under inter-turn fault: a simple approach based on healthy machine data (2016)
Journal Article
Belguerras, L., Arellano-Padilla, J., Arumugam, P., Hamiti, T., Mezani, S., & Gerada, C. (in press). Non-linear circuit based model of PMSM under inter-turn fault: a simple approach based on healthy machine data. IET Electric Power Applications, 10(6), https://doi.org/10.1049/iet-epa.2015.0443

The paper proposes a fast dynamic mathematical model to evaluate the performances of saturated permanent magnet synchronous machines (PMSM) under stator winding’s inter turn fault. The parameters of the model can be determined using only manufacturer... Read More about Non-linear circuit based model of PMSM under inter-turn fault: a simple approach based on healthy machine data.

The importance of considering pushback time and arrivals when routing departures on the ground at airports (2016)
Conference Proceeding
Stergianos, C., Atkin, J., Schittekat, P., Nordlander, T. E., Gerada, C., & Morvan, H. (in press). The importance of considering pushback time and arrivals when routing departures on the ground at airports.

With the constant increase in air traffic, airports are facing capacity problems. Many airports are increasingly interested in utilising optimisation methods for specific airport processes. However, many such processes do happen in parallel, and maxi... Read More about The importance of considering pushback time and arrivals when routing departures on the ground at airports.

Model predictive control for a dual active bridge inverter with a floating bridge (2016)
Journal Article
Chowdhury, S., Wheeler, P., Gerada, C., & Patel, C. (2016). Model predictive control for a dual active bridge inverter with a floating bridge. IEEE Transactions on Industrial Electronics, 63(9), 5558-5568. https://doi.org/10.1109/TIE.2016.2564949

This paper presents a Model Predictive Control technique applied to a dual active bridge inverter where one of the bridges is floating. The proposed floating bridge topology eliminates the need for isolation transformer in a dual inverter system and... Read More about Model predictive control for a dual active bridge inverter with a floating bridge.

A multi-level converter with a floating bridge for open-ended winding motor drive applications (2016)
Journal Article
Chowdhury, S., Wheeler, P., Patel, C., & Gerada, C. (2016). A multi-level converter with a floating bridge for open-ended winding motor drive applications. IEEE Transactions on Industrial Electronics, 63(9), 5366-5375. https://doi.org/10.1109/TIE.2016.2561265

This paper presents a dual three phase open end winding induction motor drive. The drive consists of a three phase induction machine with open stator phase windings and dual bridge inverter supplied from a single DC voltage source. To achieve multi-l... Read More about A multi-level converter with a floating bridge for open-ended winding motor drive applications.

Evaluation of saliency tracking as an alternative for health monitoring in PMSM-drives under nonstationary conditions (2016)
Journal Article
Arellano-Padilla, J., Sumner, M., & Gerada, C. (2016). Evaluation of saliency tracking as an alternative for health monitoring in PMSM-drives under nonstationary conditions. IET Electric Power Applications, 10(4), 284-293. https://doi.org/10.1049/iet-epa.2015.0356

This paper evaluates the capability of saliency tracking to assess the health condition of permanent magnet synchronous motor (PMSM) drives operating under nonstationary conditions. The evaluated scheme is based on saliency tracking methods, which ar... Read More about Evaluation of saliency tracking as an alternative for health monitoring in PMSM-drives under nonstationary conditions.

Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators (2016)
Conference Proceeding
Nuzzo, S., Galea, M., Gerada, C., Gerada, D., Mebarki, A., & Brown, N. (2016). Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators.

Salient-pole synchronous generators (SG) have a long history of utilization as reliable power generation systems. Important aspects of such generators include a high power-to-weight ratio, high efficiency and a low cost per kVA output [1]. Another cr... Read More about Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators.

Integrated motor drives: state of the art and future trends (2016)
Journal Article
Abebe, R., Vakil, G., Lo Calzo, G., Cox, T., Lambert, S., Johnson, C. M., …Mecrow, B. (2016). Integrated motor drives: state of the art and future trends. IET Electric Power Applications, 10(8), 757-771. https://doi.org/10.1049/iet-epa.2015.0506

With increased need for high power density, high efficiency and high temperature capabilities in aerospace and automotive applications, integrated motor drives (IMD) offers a potential solution. However, close physical integration of the converter an... Read More about Integrated motor drives: state of the art and future trends.

Multi-objective optimization of a magnetically levitated planar motor with multi-layer windings (2016)
Journal Article
Guo, L., Zhang, H., Galea, M., Li, J., & Gerada, C. (2016). Multi-objective optimization of a magnetically levitated planar motor with multi-layer windings. IEEE Transactions on Industrial Electronics, 63(6), 3522-3532. https://doi.org/10.1109/TIE.2016.2522389

In this paper, a novel magnetically levitated coreless planar motor with three-layer orthogonal overlapping windings is shown to have higher power density and higher space utilization compared to other coreless planar motors. In order to achieve maxi... Read More about Multi-objective optimization of a magnetically levitated planar motor with multi-layer windings.

Condition monitoring approach for permanent magnet synchronous motor drives based on the INFORM method (2016)
Journal Article
Arellano-Padilla, J., Sumner, M., & Gerada, C. (2016). Condition monitoring approach for permanent magnet synchronous motor drives based on the INFORM method. IET Electric Power Applications, 10(1), 54-62. https://doi.org/10.1049/iet-epa.2015.0148

This paper proposes a monitoring scheme based on saliency tracking to assess the health condition of PMSM drives operating under non stationary conditions. The evaluated scheme is based on the INFORM methodology, which is associated to the accurate s... Read More about Condition monitoring approach for permanent magnet synchronous motor drives based on the INFORM method.