All Outputs (454)

Modeling and analysis of eddy current losses in permanent magnet machines with multi-stranded bundle conductors (2015)
Journal Article
Arumugam, P., Dusek, J., Mezani, S., Hamiti, T., & Gerada, C. (in press). Modeling and analysis of eddy current losses in permanent magnet machines with multi-stranded bundle conductors. Mathematics and Computers in Simulation, 130, https://doi.org/10.1016/j.matcom.2015.10.010

This paper investigates the influence of eddy current losses in multi-stranded bundle conductors employed in out-runner permanent magnet machines, by adopting an analytical model. The analytical model is based on a sub-domain field model that solves... Read More about Modeling and analysis of eddy current losses in permanent magnet machines with multi-stranded bundle conductors.

End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines (2015)
Presentation / Conference Contribution
Galea, M., Di Nardo, M., Gerada, C., Palmieri, M., Gerada, D., Cupertino, F., Degano, M., & Bianchi, N. (2015, November). End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines. Presented at End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines, Yokohama, Japan

This paper presents an extensive study on the electromagnetic and structural influences of the end barrier shape of a Synchronous Reluctance Machine (SynRel). One of the most challenging tasks in designing these machines is to achieve a smooth torque... Read More about End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines.

Turn-turn short circuit fault management in permanent magnet machines (2015)
Journal Article
Arumugam, P., Hamiti, T., & Gerada, C. (in press). Turn-turn short circuit fault management in permanent magnet machines. IET Electric Power Applications, 9(9), https://doi.org/10.1049/iet-epa.2015.0020

This paper presents a systematic study on turn-turn short circuit fault and ways to manage them to provide a basis for comparison of the various options available. The possible methods to reduce the likelihood of the winding SC fault and the fault mi... Read More about Turn-turn short circuit fault management in permanent magnet machines.

Computation of wound rotor induction machines based on coupled finite elements and circuit equation under a first space harmonic approximation (2015)
Journal Article
Mezani, S., Hamiti, T., Belguerras, L., Lubin, T., & Gerada, C. (2015). Computation of wound rotor induction machines based on coupled finite elements and circuit equation under a first space harmonic approximation. IEEE Transactions on Magnetics, 52(3), https://doi.org/10.1109/TMAG.2015.2478798

The paper presents a fast method to compute wound rotor induction machines in steady state. Coupled time-harmonic FE-circuit equation are used under a first space harmonic approximation for the air-gap magnetic field. It is shown that only 4 magnetos... Read More about Computation of wound rotor induction machines based on coupled finite elements and circuit equation under a first space harmonic approximation.

Estimating current derivatives for sensorless motor drive applications (2015)
Presentation / Conference Contribution
Hind, D. M., Sumner, M., & Gerada, C. Estimating current derivatives for sensorless motor drive applications. Presented at 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)

The PWM current derivative technique for sensorless control of AC machines requires current derivative measurements under certain PWM vectors. This is often not possible under narrow PWM vectors due to high frequency (HF) oscillations which affect th... Read More about Estimating current derivatives for sensorless motor drive applications.

Development of an axial flux MEMS BLDC micromotor with increased efficiency and power density (2015)
Journal Article
Ding, X., Liu, G., Du, M., Guo, H., Qiao, H., & Gerada, C. (2015). Development of an axial flux MEMS BLDC micromotor with increased efficiency and power density. Energies, 8(7), https://doi.org/10.3390/en8076608

This paper presents a rigorous design and optimization of an axial flux microelectromechanical systems (MEMS) brushless dc (BLDC) micromotor with dual rotor improving both efficiency and power density with an external diameter of only around 10 mm. T... Read More about Development of an axial flux MEMS BLDC micromotor with increased efficiency and power density.

Control integrated studies on high speed permanent magnetic generators system (2015)
Journal Article
Li, J., Zhang, X., Zhang, H., Huang, X., Gerada, C., & Galea, M. (2015). Control integrated studies on high speed permanent magnetic generators system. IEEE Transactions on Magnetics, 51(11), https://doi.org/10.1109/TMAG.2015.2451102

The power converter and its control system has great impact on the behavior of the high speed permanent magnet generator system (HSPGS) due to the high operating frequency, and therefore should be investigated in the design and research on the HSPGS.... Read More about Control integrated studies on high speed permanent magnetic generators system.

Design considerations for the tooth shoe shape for high-speed permanent magnet generators (2015)
Journal Article
Zhang, H., Zhang, X., Gerada, C., Galea, M., Gerada, D., & Li, J. (2015). Design considerations for the tooth shoe shape for high-speed permanent magnet generators. IEEE Transactions on Magnetics, 51(11), Article 8112904. https://doi.org/10.1109/TMAG.2015.2448096

This paper presents a study of the effects that the shoe shape of the teeth of electrical machines has on the performance and losses. This is done by considering a concentrated wound, high-speed permanent magnet generator. The paper investigates the... Read More about Design considerations for the tooth shoe shape for high-speed permanent magnet generators.

Analysis and optimization of a double-sided air-cored tubular generator (2015)
Journal Article
Guo, L., Zhang, H., Lin, J., Galea, M., & Gerada, C. (2015). Analysis and optimization of a double-sided air-cored tubular generator. IEEE Transactions on Magnetics, 51(11), https://doi.org/10.1109/TMAG.2015.2445576

In this paper, the design and development of a double-sided air-cored tubular generator (DSTG) is presented. The characteristics of air-cored slot-less structures are investigated in terms of power density and efficiency. This is highly desirable for... Read More about Analysis and optimization of a double-sided air-cored tubular generator.

Magnetically geared induction machines (2015)
Journal Article
Mezani, S., Hamiti, T., Belguerras, L., Lubin, T., Rashed, M., & Gerada, C. (2015). Magnetically geared induction machines. IEEE Transactions on Magnetics, 51(11), https://doi.org/10.1109/TMAG.2015.2443252

A wound-rotor induction machine is artfully coupled to a magnetic gear to achieve a high-torque-density drive system called magnetically geared induction machine (MaGIM). The high-speed rotor of MaGIM is common to both the machine and gear sides. A r... Read More about Magnetically geared induction machines.

Demagnetisation analysis for Halbach array configurations in electrical machines (2015)
Journal Article
Galea, M., Papini, L., Zhang, H., Gerada, C., & Hamiti, T. (2015). Demagnetisation analysis for Halbach array configurations in electrical machines. IEEE Transactions on Magnetics, 51(9), https://doi.org/10.1109/TMAG.2015.2429645

This paper proposes and investigates an analytical method for assessing the risk of potential, irreversible demagnetisation in the PMs of electrical machines, equipped with n-stages, Halbach arrays. The higher risk of demagnetisation, synonymous with... Read More about Demagnetisation analysis for Halbach array configurations in electrical machines.

Analysis and design of a magnetically levitated planar motor with novel multilayer windings (2015)
Journal Article
Guo, L., Zhang, H., Galea, M., Lin, J., Lu, W., & Gerada, C. (2015). Analysis and design of a magnetically levitated planar motor with novel multilayer windings. IEEE Transactions on Magnetics, 51(8), https://doi.org/10.1109/TMAG.2015.2421281

This paper proposes a novel permanent magnet planar motor with moving multilayer orthogonal overlapping windings. This novel motor topology can achieve a five-degrees-of-freedom drive using two sets of x-direction windings and two sets of y-direction... Read More about Analysis and design of a magnetically levitated planar motor with novel multilayer windings.

A topology selection consideration of electrical machines for traction applications: towards the FreedomCar 2020 targets (2015)
Presentation / Conference Contribution
Walker, A., Galea, M., Gerada, C., Mebarki, A., & Gerada, D. (2015, March). A topology selection consideration of electrical machines for traction applications: towards the FreedomCar 2020 targets. Presented at 2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER), Monte Carlo

This paper details a qualitative comparison between different types of electrical machine for hybrid electric vehicle traction applications. Targets set by the US Department of Energy for the year 2020 are used as goals. Several types of machine for... Read More about A topology selection consideration of electrical machines for traction applications: towards the FreedomCar 2020 targets.

Design considerations for high performance traction machines: Aiming for the FreedomCar 2020 targets (2015)
Presentation / Conference Contribution
Walker, A., Galea, M., Gerada, C., Mebarki, A., & Gerada, D. (2015, March). Design considerations for high performance traction machines: Aiming for the FreedomCar 2020 targets. Presented at 2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS), Aachen, Germany

This paper presents considerations for the design of high performance, interior permanent magnet machines for traction applications. These machines will be designed to reach the FreedomCar 2020 targets set by the US Department of Energy for the year... Read More about Design considerations for high performance traction machines: Aiming for the FreedomCar 2020 targets.

Permanent magnet machine design trade-offs to achieve sensorless control at high load (2015)
Journal Article
Caner, M., Gerada, C., & Asher, G. (2015). Permanent magnet machine design trade-offs to achieve sensorless control at high load. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 34(1), 324-343. https://doi.org/10.1108/compel-02-2014-0039

Purpose

The purpose of this paper is to introduce a new design optimization technique for a surface mounted permanent magnet (SMPM) machine to increase sensorless performance at high loadings by compromising with torque capability.

Design/meth... Read More about Permanent magnet machine design trade-offs to achieve sensorless control at high load.

Development of an aircraft wheel actuator for green taxiing (2014)
Presentation / Conference Contribution
Galea, M., Pickering, S. J., Tighe, C., XU, Z., Hamiti, T., & Gerada, C. (2014, September). Development of an aircraft wheel actuator for green taxiing. Presented at XXI International Conference on Electrical Machines (ICEM '2014), Berlin, Germany

In this paper, the design and construction aspects of a wheel actuator to be used for aircraft taxiing on the ground and which will be located in the main landing gear are addressed. The main challenges with the application are the high torque densit... Read More about Development of an aircraft wheel actuator for green taxiing.

Mechanical and thermal management design of a motor for an aircraft wheel actuator (2014)
Presentation / Conference Contribution
Xu, Z., Galea, M., Tighe, C., Hamiti, T., Gerada, C., & Pickering, S. (2014, October). Mechanical and thermal management design of a motor for an aircraft wheel actuator. Presented at 2014 17th International Conference on Electrical Machines and Systems (ICEMS), Hangzhou, China

A permanent magnet motor is designed as an actuator for taxiing large aircraft in an airport. The motor is attached to the main aircraft wheel to provide a direct drive. A special topology for this machine is developed selected and designed. Due to a... Read More about Mechanical and thermal management design of a motor for an aircraft wheel actuator.

Automatic design of Synchronous Reluctance motors focusing on barrier shape optimization (2014)
Journal Article
Pellegrino, G., Cupertino, F., & Gerada, C. (2014). Automatic design of Synchronous Reluctance motors focusing on barrier shape optimization. IEEE Transactions on Industry Applications, 51(2), https://doi.org/10.1109/TIA.2014.2345953

The automated design of Synchronous Reluctance motors based on Multi-Objective, Genetic Optimization and Finite Element Analysis is considered in this paper. Three types of barrier shapes are considered, all described by an effective, limited set of... Read More about Automatic design of Synchronous Reluctance motors focusing on barrier shape optimization.

Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator (2014)
Journal Article
Zhang, X., Li, W., Baoquan, K., Cao, J., Cao, H., Gerada, C., & Zhang, H. (2014). Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator. IEEE Transactions on Magnetics, 51(1), https://doi.org/10.1109/TMAG.2014.2332437

A 30kVA, 96000rpm, air cooled high-speed permanent magnetic generator (HSPMG) is investigated in this paper. Considering effects on both the magnetic circuit and heat transfer paths comprehensively, the stator slot notch in this HSPMG is optimized. F... Read More about Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator.

Design of synchronous reluctance motors with multiobjective optimization algorithms (2014)
Journal Article
Cupertino, F., Pellegrino, G., & Gerada, C. (2014). Design of synchronous reluctance motors with multiobjective optimization algorithms. IEEE Transactions on Industry Applications, 50(6), https://doi.org/10.1109/TIA.2014.2312540

The automatic design of Synchronous Reluctance (SyR) machines is considered in this paper by means of Finite Element Analysis and Multi-Objective Optimization Algorithms (MOOA). The research focuses on the design of the rotor geometry which is the ke... Read More about Design of synchronous reluctance motors with multiobjective optimization algorithms.