Complete Analytical Modeling of an Axial Flux PM Synchronous Machine for Wind Energy Application

Karim, Nabil; Azzouzi, J.; Barakat, Georges; Dakyo, Brayima

doi:10.1109/epepemc.2006.283291

Cited by 3 publications

(4 citation statements)

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“…Most models, however, reduce the 3-D problem to a 2-D representation of a cylindrical cross section [15] and [20]. Thermal models need an accurate assessment of rotor iron losses [21], [22].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of Axial-Flux Permanent Magnet Synchronous Machines With Fractional Windings With Experimental Validation

Stefano

Marignetti

2012

IEEE Trans. Ind. Electron.

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Axial-flux permanent magnet (PM) synchronous machines are suitable for direct drive applications. Axial-flux PM synchronous machines with fractional windings provide high power density, low torque ripple, and sinusoidal phase voltages, but suffer from high rotor losses due to stator field harmonics and slotting. This paper formulates an electromagnetic model based on the polar coordinate representation of the air-gap magnetic field. No-load and load tests are carried out on a soft-magneticcomposite stator axial-flux machine to validate the model. Rotor losses represent the largest loss figure in this machine. Most rotor losses are due to slotting harmonics.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of Axial-Flux Permanent Magnet Synchronous Machines With Fractional Windings With Experimental Validation

Stefano

Marignetti

2012

IEEE Trans. Ind. Electron.

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“…It is been framed by composing FEM and multi-slice AM methods which are able to consider the end effects of the machine. 2-D analytical method also investigated in [8], [10], [15], [17], [19], [21], [24], [26], [33][34][35], [44][45][46][47][48], [50], [53]. In [8], the authors investigated a 2-D analytical method for magnetic field calculations in PMs and air gap regions for a single-sided structure in cylindrical coordinate [10], Cartesian coordinate [54] and for a double-sided slotted stator in [15].…”

Section: Introductionmentioning

confidence: 99%

“…In [8], the authors investigated a 2-D analytical method for magnetic field calculations in PMs and air gap regions for a single-sided structure in cylindrical coordinate [10], Cartesian coordinate [54] and for a double-sided slotted stator in [15]. The 2-D analytical method also was described for slotted stator TORUS-type [19,24], for calculation of cogging torque and EMF [21]. Also, this analytical model is employed for calculating torque, EMF and inductances for a slotted stator with surface-inset PMs [26].…”

Section: Introductionmentioning

confidence: 99%

Analytical Model of the Slotless Double-Sided Axial Flux Permanent-Magnet Brushless Machines

Ghaffari¹

2020

J. Model. Optim.

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Analytical approaches, if possible, are suggested for saving the simulation time in the design stage of the electrical machines. This benefit is highlighted when the optimization issues including too many iterations are desired. Hence, this paper presents a 2-D analytical model for magnetic field distribution based on the sub-domain method in a slotless double-sided axial flux permanent-magnet (PM) brushless machines (AFPMBMs) with internal-rotor-external-stators. According to this method, the machine cross-section is divided into the appropriate number of sub-regions and the related partial differential equations (PDEs) extracted from Maxwell equations are formed for magnetic vector potential in each sub-region. Applying curl on the obtained results leads to calculating the magnetic flux density components in each sub-region. Based on the superposition theorem, the analytical procedure is utilized in the two separate steps where in the first step the magnetic flux is originated by only PMs with various magnetization patterns (i.e., parallel, ideal Halbach, 2-segment Halbach and bar magnet in shifting magnetization patterns) and the armature currents are zero. In the second step, all PMs are inactivated and only armature currents affect the magnetic flux distribution. Finally, the obtained analytical results are compared with those of the Finite element method (FEM) to confirm the accuracy of the proposed analytical model. The extracted results reveal the benefit of the analytical model for replacing instead of the FEM to predict the magnetic flux density component in the presented AFPMBMs in a shorter time.

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“…Finally, Karim et al . [26] and Azzouzi et al . [27] have analytically extracted the steady‐state full‐load performance of AFPM machines considering the PM and armature‐reaction fields, inductances, and circuital voltage balance equation, but regardless of equation of motion and the interaction between iron losses and the other characteristics.…”

Section: Introductionmentioning

confidence: 99%

Detailed analytical method for predicting the steady‐state time variations and entire harmonic contents of principal performance characteristics in a non‐slotted axial flux permanent magnet motor, considering a precise iron loss model

Baghayipour

Darabi

Dastfan

2017

IET Electric Power Applications

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The harmonic contents of principal performance characteristics in an electrical machine are important due to several reasons, especially because they influence the machine acoustic noise generation capability. Therefore, they should be accurately calculated considering the various electromagnetic effects involved in the machine operation. Accordingly, this study proposes a detailed analytical model for predicting the time waveforms and harmonic contents of the principal performance characteristics of a double-sided TORUS-type non-slotted axial flux permanent magnet motor with surface-mounted magnets at steady state under any given loading conditions. The armature-reaction magnetic field and inductances are exactly calculated considering both the effects of coil sides and end windings as well as that of the winding distribution. Most notably, the aggregate iron loss of machine and its influence on armature currents is precisely modelled based on the magnetic field distribution in iron parts. By establishing and solving the differential equation system of motor in the two cases with or without the neutral wire, the armature currents, speed and torque ripples, input/output powers, and copper and iron losses are all achieved with the entire harmonic content and highest accuracy. The comparison of results with those of finite element analysis and real test then validates the model.

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Complete Analytical Modeling of an Axial Flux PM Synchronous Machine for Wind Energy Application

Cited by 3 publications

References 0 publications

Electromagnetic Analysis of Axial-Flux Permanent Magnet Synchronous Machines With Fractional Windings With Experimental Validation

Electromagnetic Analysis of Axial-Flux Permanent Magnet Synchronous Machines With Fractional Windings With Experimental Validation

Analytical Model of the Slotless Double-Sided Axial Flux Permanent-Magnet Brushless Machines

Detailed analytical method for predicting the steady‐state time variations and entire harmonic contents of principal performance characteristics in a non‐slotted axial flux permanent magnet motor, considering a precise iron loss model

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