A high-power, totally enclosed, permanent magnet, axial flux machine for engine integration

Mebarki, Abdeslam; Wejrzanowski, Krzysztof; Shanel, M.; Brown, Neil L.

doi:10.1049/cp.2010.0153

Cited by 6 publications

(3 citation statements)

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“…Different from the radial-flux motor, the axial-flux type motor has larger torque, shorter axial length, and more compact structure. Therefore, the axial-flux type motor is applied in many electric vehicle and industrial automation applications [1].…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Design of Turbo Injection Mode for Axial Flux Motor in Plastic Injection Molding Machine by Particle Swarm Optimization

Kuo

Chang

2015

Mathematical Problems in Engineering

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This paper proposes a turbo injection mode (TIM) for an axial flux motor to apply onto injection molding machine. Since the injection molding machine requires different speed and force parameters setting when finishing a complete injection process. The interleaved winding structure in the motor provides two different injection levels to provide enough injection forces. Two wye-wye windings are designed to switch two control modes conveniently. Wye-wye configuration is used to switch two force levels for the motor. When only one set of wye-winding is energized, field weakening function is achieved. Both of the torque and speed increase under field weakening operation. To achieve two control objectives for torque and speed of the motor, fuzzy based multiple performance characteristics index (MPCI) with particle swarm optimization (PSO) is used to find out the multiobjective optimal design solution. Both of the torque and speed are expected to be maximal at the same time. Three control factors are selected as studied factors: winding diameter, winding type, and air-gap. Experimental results show that both of the torque and speed increase under the optimal condition. This will provide enough large torque and speed to perform the turbo injection mode in injection process for the injection molding machine.

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Section: Introductionmentioning

confidence: 99%

Multiobjective Design of Turbo Injection Mode for Axial Flux Motor in Plastic Injection Molding Machine by Particle Swarm Optimization

Kuo

Chang

2015

Mathematical Problems in Engineering

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“…xial flux permanent magnet (AFPM) machines are been widely used in various applications due to their important merits, such as compact structure, high efficiency and high torque density [1][2][3][4][5]. Comparison works have been published in [6,7], proving the advantage of AF machine over radial flux machine in terms of torque density.…”

Section: Introductionmentioning

confidence: 99%

Effect of unbalanced and inclined air-gap in double-stator inner-rotor axial flux permanent magnet machine

Cho

2014

2014 International Conference on Electrical Machines (ICEM)

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Due to its novelty in structure, the appealing force between rotor and stator disks, axial flux (AF) permanent magnet (PM) machine are easily affected by air-gap asymmetries. In the inner-rotor double-stator AF machine, the rotor disk is assembled between two outer stators. It is usually assumed that the air-gap clearance is ideal condition in electromagnetic analysis. However, manufacturing imperfections in the machine or any perturbation to rotor disk during operation would results in an unbalanced and inclined air-gap clearance, which would generate unbalanced force acting on the structure and further increase the asymmetry extent. Cogging torque, which is imperative requirements for high performance applications, is directly related to modulating effect of the air-gap and slot opening permeance. In this paper, the cogging torque under un-normal air-gap condition of AF machines is first calculated using a combined analytical and numerical methods, followed by a structure analysis to study the effect to mechanical stress, deformation and bending force on bearings. Results and conclusions given in this paper are instructive for successful development of AFPM machines.Index Terms--Axial flux permanent magnet machine (AFPM), unbalanced air-gap, inclined air-gap, cogging torque, magnetic force, deformation 978-1-4799-4389-0/14/$31.00 ©2014 IEEE

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“…Therefore the modelling and control of the motor/generator for the FESS is among the key tasks to optimise its performance. Axial-flux permanent magnet (AFPM) machine has gained increasing attention recently in the applications which require geometric constraints and the use of traditional permanent magnet (PM) machines are not appropriate [12][13][14][15]. Owing to advances in machine design, AFPM machines can have a number of distinct advantages over conventional radial-flux PM machines, such as: higher torque, better power density and lower noise during operation [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Sensorless control of a dual‐airgap axial flux permanent magnet machine for flywheel energy storage system

Nguyen¹,

Foo²

2013

IET Electric Power Applications

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This study presents the sensorless vector control of a dual-airgap axial flux permanent magnet (AFPM) machine optimised for use in flywheel energy storage system (FESS) applications. The proposed AFPM machine has two sets of threephase stator windings but only requires a single power converter to control both electromagnetic torque and axial levitation force. The proper controllability of the latter is crucial as it can be utilised to minimise the vertical bearing stress to improve the efficiency of the FESS. The method for controlling the speed and axial displacement of the machine is discussed. An inherent speed sensorless observer is also proposed for speed estimation. The proposed observer eliminates the rotary encoder, which in turn reduces the overall weight and cost of the system while improving its reliability. The effectiveness of the proposed control scheme has been verified by simulations and experiments on a prototype machine.

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A high-power, totally enclosed, permanent magnet, axial flux machine for engine integration

Cited by 6 publications

References 0 publications

Multiobjective Design of Turbo Injection Mode for Axial Flux Motor in Plastic Injection Molding Machine by Particle Swarm Optimization

Multiobjective Design of Turbo Injection Mode for Axial Flux Motor in Plastic Injection Molding Machine by Particle Swarm Optimization

Effect of unbalanced and inclined air-gap in double-stator inner-rotor axial flux permanent magnet machine

Sensorless control of a dual‐airgap axial flux permanent magnet machine for flywheel energy storage system

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