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Analysis of space charge field of sheet electron beam for compact high power and high frequency microwave devices


Abstract – Importance of sheet beam technology and role of space charge field analysis for success of this technology have been studied. Space charge field of sheet electron beam has been investigated in three approaches. At first a simplified infinite width sheet and line model are given to investigate nature of variation of field, then […]


An Improved Beam Screen For The LHC Injection Kickers


Abstract – The two LHC injection kicker magnet systems must produce a kick of 1.3 T.m with a flattop duration variable up to 7860 ns, and rise and fall times of less than 900 ns and 3000 ns, respectively. Each system is composed of two resonant charging power supplies (RCPSs) and four 5 O transmission […]


A Seperated Sector Cyclotron For The Production of High Intensity Protons


Abstract – We describe in this paper the design of a separated sector cyclotron (SSC) for the production of an intense beam of 230 MeV protons. The goal was an accelerator that could be used as the driver of an ISOL type Radioactive Ion Beam Facility.


Use of Advanced Scripting Language in the Modelling of Dynamic Systems


Authors Christopher P. Riley, Alexandros M. Michaelides Abstract – This paper describes how state-of-the-art Finite Element Analysis (FEA) programs can be used to characterise the dynamic performance of linear electrical machines and actuators. Special emphasis is placed on the use of an advanced scripting language for the characterisation of the mechanical load coupled to the […]


Permanent Magnet (De-) Magnetization and Soft Iron Hysteresis Effects – A comparison of FE analysis techniques


Authors A.M. Michaelides, J. Simkin, P. Kirby and C.P. Riley Abstract – The paper describes advanced Finite Element Analysis solvers for the treatment of material magnetization. The prediction of hysteretic behaviour in soft ferromagnetic materials is outlined, demonstrating how remanent forces and hysteresis loss can now be accurately quantified. Results from analysis of a hysteresis […]


Negative Sequence Losses in Turbine Generator Rotors


Authors Riley, C.P. Abstract – Negative sequence currents are induced in the rotor of a turbine generator when there is imbalance in the three phase armature currents. By adopting surface impedance boundary conditions to represent the rotor steel, three dimensional finite element methods can be used to determine the effect of barriers to the current […]


Modelling of 0.5HP Induction Motor using AC Analysis Solver for Rotor Copper Bar material


Authors Ismail Daut, Nair Gomesh, M. Ezanni, Yanawati Yahaya, Nor Shafiqin Shariffuddin, Mohd Irwan Yusoff, M. Irwanto Abstract — In this paper a FEM model of a three phase 0.5HP squirrel-cage induction motor is modelled by using FEM software. The model is then used to analyze and investigate the performance of the induction machine using […]


Genetic algorithm and finite element analysis for optimum design of slotted torus axial-flux permanent-magnet brushless DC motor


Authors A. Mahmoudi, N. A. Rahim, and H. W. Ping Abstract – This paper presents an inside-out axial-flux permanent-magnet brushless DC motor optimized by Finite Element Analysis (FEA) and Genetic Algorithm (GA) that uses sizing equation. The double-sided slotted-stator designed TORUS motor has sinusoidal back EMF waveform and maximum power density. The GA obtained the […]


FEA-Aided design, optimization and development of an axial flux motor for implantable ventricular assist device


Abstract — This paper presents the optimal design and development of an axial flux motor for blood pump application. With the design objective of maximizing the motor efficiency and torque, different topologies of AFPM machine has been examined.


FEA Modelling of a Novel Tubular Linear Generator


Abstract – This paper presents the finite element modelling of a novel tubular linear generator, designed for efficient wave energy conversion. The paper presents generator design considerations to meet the demands of the intended application. In addition, the paper concentrates on novel aspects of generator modelling using electromagnetic finite element analysis, which were adopted to […]


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