Analytic model of axial flux permanent magnet machines considering spatial harmonics

Egea, Aritz; Almandoz, Gaizka; Poza, Javier; Gonzalez, A.

doi:10.1109/speedam.2010.5542393

Cited by 6 publications

(10 citation statements)

References 10 publications

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“…Including this effect more realistic spatial distribution of the flux density is obtained and in this way the accuracy of the results is increased. In this article, the fringing coefficient is parameterized as a function of different dimensions of the machine so as to find a physical meaning, [18]- [20].…”

Section: A Magnetic Flux Density Created By Magnets In a Slotless Mamentioning

confidence: 99%

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Analytical model to calculate magnetic flux density in permanent magnet synchronous machines with static eccentricity

Gómez

Zarate

Almandoz

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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In this article a general analytical model for the analysis of permanent magnet synchronous machines with static eccentricity is presented. The model is a continuation of [1] and it is based on Fourier time-space series formulated in 2-D coordinates. The results of the model are corroborated by simulations of finite element method over two different machines. The results of the model show a good agreement with the results obtained from simulations. Index Terms-Finite element method; Fourier time-space series; Permanent-magnet synchronous machine; Static EccentricityGaizka Ugalde was born in Ermua, Spain. He received the B.S. and the Ph.D. degrees in electrical engineering at he is currently an Associate Professor. His current research interests include permanent-magnet machine design, modelling, and control. He has participated in various research projects in the fields of lift drives and railway traction.

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Section: A Magnetic Flux Density Created By Magnets In a Slotless Mamentioning

confidence: 99%

“…This effect is obtained in [18], [21] through a conformal transformation from Z to W plane, but this calculus was firstly introduced by Zhu in [22].…”

Section: Effects Of Slots and Static Eccentricitymentioning

confidence: 99%

Analytical model to calculate magnetic flux density in permanent magnet synchronous machines with static eccentricity

Gómez

Zarate

Almandoz

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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show abstract

“…Few researchers employ this method because the distribution is not exactly rectangular and this assumption may lead to significant errors [15]. In order to improve accuracy, some authors have used trapezoidal approximations for direct current (DC) motors [16] or included fringing functions [17,18]. Others have proposed empirical approximations, as shown in [19,20], through some exponential functions.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it was possible to identify the design parameters that should be modified to upgrade the vibroacoustic performance of the design. The proposed model is based on previous works presented in [13,14,17]. In addition, it should be pointed that this article is the continuation of [29].…”

Section: Introductionmentioning

confidence: 99%

Analytical Model to Calculate Radial Forces in Permanent-Magnet Synchronous Machines

Gómez¹,

Garcia²,

McCloskey

et al. 2021

Applied Sciences

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There are three principal sources of noise and vibration in electrical machines: electromagnetic sources, mechanical sources, and aerodynamic sources. Nowadays, one of the major advantages of permanent-magnet synchronous machines is their torque density. This density is achieved through a high magnetic flux density in the air gap, which is achieved through hard magnets. Unfortunately, in these machines, electromagnetic forces have been identified as the main source of vibration and noise, and high magnetic flux densities make these vibrations and noises more significant. With the aim of better understanding the relationship between electromagnetic forces and design variables, this article, which is the continuation of previous work, firstly describes a study of the sources of magnetic forces in permanent-magnet synchronous machines. Subsequently, an analytical model for the computation of the radial forces originating from electromagnetic sources in permanent-magnet synchronous machines is stated. This model analyzes the forces on both the rotor surface and the base of the stator tooth. The analytical results were corroborated through simulations using the finite element method (FEM) and also by experimental tests performed over two prototypes. The results achieved by the analytical model show good agreement with both FEM results and experimental measurements.

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“…In axial-flux machines, the airgap flux density is an important design parameter, having notable effect on the machine characteristics. Therefore, in order to optimize the machine performance, the airgap flux density must be determined correctly [1].…”

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confidence: 99%

Modelling and Design Optimization of a Small Axialflux Brushless Permanent-Magnet Motor For Electric Traction Purposes

Pop¹,

Gillon²,

Radulescu³

2011

Pojazdy Szynowe

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This paper presents the modelling and design optimization of an axial-flux brushless permanent-magnet motor with one rotor-two stators configuration. This particular axialflux machine is suitable to traction applications. The reason is that, firstly, fixing of the stators may be arranged reasonably easily; secondly, the topology with two stators is able to operate even if one of its stators is electrically disconnected; thirdly, the axial loading of bearings is small due to the symmetry of the motor structure. A prototype machine was designed and manufactured for verifying the design optimization results.

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Analytic model of axial flux permanent magnet machines considering spatial harmonics

Cited by 6 publications

References 10 publications

Analytical model to calculate magnetic flux density in permanent magnet synchronous machines with static eccentricity

Analytical model to calculate magnetic flux density in permanent magnet synchronous machines with static eccentricity

Analytical Model to Calculate Radial Forces in Permanent-Magnet Synchronous Machines

Modelling and Design Optimization of a Small Axialflux Brushless Permanent-Magnet Motor For Electric Traction Purposes

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