Modeling Magnet Length In 2-D Finite-Element Analysis of Electric Machines

Ruoho, S.; Santa-Nokki, T.; Kolehmainen, J.; Arkkio, Antero

doi:10.1109/tmag.2009.2018621

Cited by 79 publications

(35 citation statements)

References 9 publications

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“…Therefore, it is desirable to predict the eddy-current loss of the PM during the design. If the eddy-current loss is unacceptable, the PMs may be segmented [164][165][166].…”

Section: Modeling Of the Em Lossesmentioning

confidence: 99%

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Yılmaz

2015

Renewable and Sustainable Energy Reviews

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“…Therefore, it is desirable to predict the eddy-current loss of the PM during the design. If the eddy-current loss is unacceptable, the PMs may be segmented [164][165][166].…”

Section: Modeling Of the Em Lossesmentioning

confidence: 99%

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Yılmaz

2015

Renewable and Sustainable Energy Reviews

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“…If the reaction field is neglected (3) results as in (9) With defined as in (4), resulting in solution of as The power loss in each magnet segment results as in (12) Fig. 12 and 13 show the effect on loss with and without the consideration of the reaction field on the evaluated total eddy current loss.…”

Section: Influence Of the Reaction Fieldmentioning

confidence: 99%

“…However, 3D FE analysis is time-intensive and demands huge computational power especially if the model size is large. Previous works have proposed the usage of an end-effect factor in 2D simulations to include the axial segmentation effect [4]. This factor, which is less than 1, is then used to modify the conductivity of the magnet to account for the magnet segmentation in the axial direction.…”

Section: E Influence Of Axial Segmentationmentioning

confidence: 99%

2D analytical model for estimation of eddy current loss in the magnets of IPM machines considering the reaction field of the induced eddy currents

Paradkar

Böcker

2015

2015 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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In this paper a closed-form 2D analytical model developed for the estimation of eddy current loss in interior permanent magnet machines is presented. To check the generality of the developed model, two different types of commonly employed interior permanent magnet machines are considered. 2D finite-element analysis was used to benchmark the results from the analytical model. The proposed model can be directly used to evaluate the eddy current magnet loss for magnet segmentation in the circumferential direction. The influence of air-gap length, frequency of carrier harmonic, reaction field and non-linearity of iron due to saturation on the magnet loss have been studied in detail and the results are presented. The effect of axial segmentation has been considered by incorporating an end-effect factor in the analytical model. The results from analytical and 2D finite-element analyses are found to be in concurrence.Index Terms--permanent magnets, eddy current loss, magnet segmentation, analytical model, finite element method, interior permanent magnet synchronous motor

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“…The computationally efficient 2D numerical methods such as transient finite element analysis (FEA) to calculate the eddy current losses [5], [6] can yield good results but provides less physical insight on the mechanism of eddy current loss. Hence a few 2D analytical methods are developed to predict the magnet eddy current loss at high frequencies with varying degree of accuracy [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Prediction of 3-D High-Frequency Eddy Current Loss in Rotor Magnets of SPM Machines

et al. 2016

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--This paper proposes a computationally efficient method, for accurate prediction of 3-dimensional (3D) high frequency eddy current loss in the rotor magnets of surface mounted permanent magnet machines employing the imaging method. 2D finite element analysis (FEA) is used to generate the information on radial and tangential 2D magnetic field variations (eddy current sources) within the magnet. The diffusion of eddy current sources along the axial plane of the magnet computed analytically is incorporated in the imaging method to establish the 3D eddy current source variations within the magnet. The modified method is validated with results from 3D time-stepped finite element analysis (FEA) for an 8-pole, 18-slot permanent magnet machine, evaluating its magnet loss considering axial and circumferential segmentation.Index Terms-Eddy current, finite element, permanent magnet machines.

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Modeling Magnet Length In 2-D Finite-Element Analysis of Electric Machines

Cited by 79 publications

References 9 publications

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

2D analytical model for estimation of eddy current loss in the magnets of IPM machines considering the reaction field of the induced eddy currents

Prediction of 3-D High-Frequency Eddy Current Loss in Rotor Magnets of SPM Machines

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