Performance comparison between low-speed axial-flux and radial-flux permanent-magnet machines including mechanical constraints

Parviainen, A.; Niemelä, Markku; Pyrhönen, Juha; Mantere, J.

doi:10.1109/iemdc.2005.195948

Cited by 62 publications

(26 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Comparison works have been published in [6,7], proving the advantage of AF machine over radial flux machine in terms of torque density. Successful development of AFPM machine involves electromagnetic design, thermal design and mechanical design, among which, the mechanical design is most challenging because of the huge attractive force between rotor and stator disks.…”

Section: Introductionmentioning

confidence: 96%

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)

View full text Add to dashboard Cite

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

show abstract

Section: Introductionmentioning

confidence: 96%

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)

View full text Add to dashboard Cite

show abstract

“…They concluded that the axial PM structure has a reduced volume compared to the standard radial one. In [12], the authors conducted a comparison between the two topologies and found that the axial flux motor has better torque than the radial flux motor. However, in [13], the comparison between the two machines included the mechanical constraints and the cost of the active parts.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of radial and axial ux PMSM based on 3D FEM modeling

2018

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Abstract:The objective of this paper is presenting a comparative performance analysis between axial flux and radial flux permanent magnet synchronous machines (PMSMs) dedicated to a 550-W wind turbine application. The outer diameter is fixed for both structures and the modeling is carried out in 3D by means of the finite element method (FEM) using the Multiphysics program ANSYS. The performances of the axial flux and radial flux machines for the same output power and at the same rotor speed are evaluated by comparing their efficiency regarding the material consumption of the active parts and eventually predicting their costs. The obtained results promote the axial flux topology as the best solution for small-scale wind turbine applications.

show abstract

“…Compared with the traditional radial flux electrical machine, the axial flux electrical machine has more advantages such as the higher efficiency rotor core (more than 95%), well heat dissipation, shorter axial stator core, more compact structure, lighter weight, smaller volume, etc. To meet the need of low work speed, the more pole pairs can be designed for the axial flux electrical machine, and the bigger starting torque and higher power density [8], [9] can also be obtained. The further research and development on axial flux electrical machine are carried out by some research institutes and rich research achievements of theory and application are acquired.…”

Section: Introductionmentioning

confidence: 99%

Operation Principle and Topology Structures of Axial Flux-Switching Hybrid Excitation Synchronous Machine

Liu¹,

Wang²,

Zheng³

2012

Journal of international Conference on Electrical Machines and

View full text Add to dashboard Cite

-The operation principle of an axial flux-switching hybrid excitation synchronous machine (AFHESM) is analyzed and its topology structures are proposed in this paper. After some comprehensive analysis of the operation principle to axial flux electrical machine, fluxswitching electrical machine and hybrid excitation electrical machine, the operation principle of AFHESM is given. Combined with some typical topological structures of hybrid excitation electrical machine, some possible topological structures are proposed and some comprehensive comparisons are carried out. The analysis results show that the statorseparated AFHESM has some advantages such as less AM turns, less impact on the demagnetization of PM, less magnetic flux-leakage and higher efficiency compared to other topologies.

show abstract

Performance comparison between low-speed axial-flux and radial-flux permanent-magnet machines including mechanical constraints

Cited by 62 publications

References 8 publications

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

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

Performance analysis of radial and axial ux PMSM based on 3D FEM modeling

Operation Principle and Topology Structures of Axial Flux-Switching Hybrid Excitation Synchronous Machine

Contact Info

Product

Resources

About