A Simple Nonlinear Magnetic Analysis for Axial-Flux Permanent-Magnet Machines

Kano, Yutaka; Kosaka, Takashi; Matsui, Nobuyuki

doi:10.1109/tie.2009.2034685

Cited by 71 publications

(34 citation statements)

References 11 publications

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“…Meanwhile, the MMF of each phase can be obtained by the current and winding configuration by using (6) when the HPM machine is under load. After all permeances in the LPMC model are prepared, the node potential equation can be built as (11).…”

Section: No Nomentioning

confidence: 99%

“…The Gauss-Seidel iterative method is adopted to improve the iterative speed. A new flux Φ (k) i and new flux density B (k) i of the stator (i.e., AT 0 ) can be derived by using (13) and (14) after the initial permeability of the stator is applied to solve (11) can be written as (15). The corresponding relative permeability μ (k) i can be obtained as (16).…”

Section: No Nomentioning

confidence: 99%

“…This LPMC model construction is simple because there is no PM in switched reluctance machine. In [8][9][10][11][12][13][14][15], the LPMC models for doubly salient PM, axial-flux PM, spoke-type PM and flux-switching PM machines were built. The magnetization directions of their PMs are tangential.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling and Analysis of Halbach Magnetized Permanent-Magnets Machine by Using Lumped Parameter Magnetic Circuit Method

Shao¹,

Zhao²,

Ji³

et al. 2015

PIER M

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Abstract-Permanent-magnets (PMs) with tangential and parallel magnetization directions are combined in the Halbach PM (HPM) machine, which can offer high performances. However, the existing lumped parameter magnetic circuit (LPMC) model can only calculate one PM magnetization direction, namely either tangential direction or parallel direction. The key of this paper is to propose a method to divide and establish equivalent magnetic motive force (MMF) for HPM machine with both tangential and parallel magnetizations. Then, a LPMC model, using equivalent MMF, is developed to predict the electromagnetic performances for a four-phase HPM machine. In order to verify the effectiveness of the proposed LPMC model, a 6-pole/8-slot 15 kW HPM prototype is built. The comparative results of the proposed LPMC model, two-dimensional (2D) FEM and the experiments verify the effectiveness of the proposed LPMC model.

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Section: No Nomentioning

confidence: 99%

Section: No Nomentioning

confidence: 99%

See 1 more Smart Citation

Modeling and Analysis of Halbach Magnetized Permanent-Magnets Machine by Using Lumped Parameter Magnetic Circuit Method

Shao¹,

Zhao²,

Ji³

et al. 2015

PIER M

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“…Lower prices of high-energy permanent magnets and electronics used in motor fabrication also promote utilization of the motors in a wide range of applications [2]. Permanentmagnet motors come in different geometries, among which is a disctype or axial-flux permanent-magnet (AFPM) motor available in various configurations [3][4][5][6][7]. The AFPM motor's high torque-tovolume ratio, excellent efficiency and flat structure are especially suited to military and transport applications, and motivate researchers to develop new approaches to design AFPM machines [8,9].…”

Section: Introductionmentioning

confidence: 99%

Design Optimization and Analysis of Afpm Synchronous Machine Incorporating Power Density, Thermal Analysis, and Back-Emf THD

Kahourzade¹,

Gandomkar²,

Mahmoudi³

et al. 2013

PIER

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Abstract-This paper presents the design and analysis of an inside-out axial-flux permanent-magnet (AFPM) synchronous machine optimized by genetic algorithm (GA) based sizing equation, finite element analysis (FEA) and finite volume analysis (FVA). The preliminary design is a 2-pole-pair slotted TORUS AFPM machine. The designed motor comprises sinusoidal back-EMF waveforms, maximum power density and the best heat removal. The GA is used to optimize the dimensions of the machine in order to achieve the highest power density. Electromagnetic field analysis of the candidate machines from GA with various dimensions is then put through FEA in order to obtain various motor characteristics. Based on the results from GA and FEA, new candidates are introduced and then put through FVA for thermal behavior evaluation of the designed motors. Techniques like modifying the winding configuration and skewing the permanent magnets are also investigated to attain the most sinusoidal back-EMF waveform and reduced cogging torque. The performance of the designed 1 kW, 3-phase, 50 Hz, 4-pole AFPM synchronous machine is tested in simulation using FEA software. It is found that the simulation results fully agree with the designed technical specifications. It is also found from FVA results that the motor temperature reaches at highest temperature to 87 • C at the rated speed and full load under steady state condition.

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“…The author in [9] is based on Lie's symmetries to model an axial-flux machine. Some other solutions are based on mathematical reluctance network models [10]. In [11] and [12], a quasi-3-D analytical solution is proposed, while in [13], a 3-D analytical model in terms of space vectors is proposed.…”

Section: Introductionmentioning

confidence: 99%

Axial-Flux-Machine Modeling With the Combination of FEM-2-D and Analytical Tools

Egea

Almandoz

Poza

et al. 2012

IEEE Trans. on Ind. Applicat.

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This paper deals with the development of analysis tools for axial-flux permanent-magnet machines. Normally, the study of this kind of machine involves three-dimensional (3-D) finite element method (FEM) (FEM-3-D) due to the 3-D nature of the magnetic problem. As it is widely known, the FEM-3-D software could take too much time, and both definition and solving processes of the problem may be very arduous. In this paper, a novel analysis procedure for axial-flux synchronous machines is proposed. This method consists in the combination of 2-D FEM simulations with analytical models based on the Fourier-series theory. The obtained results prove that the proposed method could be a very interesting option in terms of time and accuracy.Index Terms-Analytic models, axial-flux machines, finite element method (FEM), Fourier series.

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A Simple Nonlinear Magnetic Analysis for Axial-Flux Permanent-Magnet Machines

Cited by 71 publications

References 11 publications

Modeling and Analysis of Halbach Magnetized Permanent-Magnets Machine by Using Lumped Parameter Magnetic Circuit Method

Modeling and Analysis of Halbach Magnetized Permanent-Magnets Machine by Using Lumped Parameter Magnetic Circuit Method

Design Optimization and Analysis of Afpm Synchronous Machine Incorporating Power Density, Thermal Analysis, and Back-Emf THD

Axial-Flux-Machine Modeling With the Combination of FEM-2-D and Analytical Tools

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