Time-Domain Homogenization of Windings in 2-D Finite Element Models

Gyselinck, Johan; Sabariego, Ruth V.; Dular, Patrick

doi:10.1109/tmag.2007.892408

Cited by 34 publications

(28 citation statements)

References 8 publications

(18 reference statements)

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“…This simplification is effective for stranded conductors [4], where eddy currents can be neglected. Windings homogenization techniques that account for AC losses are given in [5] [6]. Homogenization of form wound windings in frequency and time domain was presented in [7].…”

Section: Motor Design and Electromagneticsmentioning

confidence: 99%

Review of multidisciplinary homogenization techniques applied to electric machines

Chauvicourt

Romanazzi

Howey

et al. 2016

2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)

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Cost reduction of any design process is always of interest for industries. Simulation work packages tackle this problem since they can quickly provide reliable results that permit detection of critical design issues prior to the prototype phase. A trade-off is then often made between model accuracy and computation speed. In the particular case of electric machines, homogenization techniques are used in order to keep high accuracy while running fast calculations. They are involved in multiple disciplines in which the machine performances are verified such as elec tromagnetic, mechanical, thermal and acoustic domains.This paper aims at defining whether these homogenization methods can be extended from one discipline to another by reviewing them independently of the physical domain.

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Section: Motor Design and Electromagneticsmentioning

confidence: 99%

Review of multidisciplinary homogenization techniques applied to electric machines

Chauvicourt

Romanazzi

Howey

et al. 2016

2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)

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“…Another FEA-based method is homogenization principle [55]. The fine winding structure is modeled as a region with complex reluctivity where the imaginary part represents the losses.…”

Section: Copper Loss Modelingmentioning

confidence: 99%

Modeling and Analysis of Electric Motors: State-of-the-Art Review

Bilgin

Liang

Terzić

et al. 2019

IEEE Trans. Transp. Electrific.

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This paper presents a comprehensive state-ofthe-art review of the modeling and analysis methods for the multidisciplinary design of electric motors for various applications including vehicular power and propulsion systems and electrified powertrains. It covers the important aspects of different engineering domains such as dynamic modeling, loss calculations, demagnetization analysis, thermal modeling, acoustic noise and vibration analysis, and mechanical stress modeling. The paper intends to guide the electric motor designers through examples and results on how to apply different analysis techniques on electric motors.

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“…In Podoltsev et al (2003) a cell-model is used to reduce the computational effort and to extract the resistance of windings. A homogenization technique in Gyselinck et al (2007) derives parameters to characterize skin and proximity effects in windings. Surface impedance methods have also been used (Le-Duc et al, 2012), where it is assumed that the magnetic flux does not penetrate into the conducting material.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the conductors can be placed freely, i.e. a periodical spacing is not required, as in Podoltsev et al (2003) and Gyselinck et al (2007). Previously (Lehti et al, 2011), magnetic flux was not allowed to enter the filaments and a separable problem was achieved, i.e.…”

Section: Introductionmentioning

confidence: 99%

Efficient modeling of coil filament losses in 2D

Lehti

Keränen

Suuriniemi

et al. 2013

COMPEL

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Purpose -The authors aim to search for a practical and accurate way to get good loss estimates for coil filaments in electrical machines, for example transformers. At the moment including loss estimations into standard finite element computations is prohibitively expensive for large coils. Design/methodology/approach -A low-dimensional function space for finite element method (FEM) is introduced on the filament-air interface and then extended into the filament to significantly reduce the number of unknowns per filament. Careful choice of these extensions enables good loss estimate accuracy. The result is a system matrix assembly block that can be used verbatim for all filaments, further reducing the cost. Both net current and voltage per length of the filament are readily available in the problem formulation. Findings -The loss estimates from the developed model agree well with traditional FEM and the computation times are faster. Originality/value -To produce accurate loss estimates in large coils, the low-dimensional function space is constricted on the filament boundaries. The proposed method enables electrical engineers to compute the ohmic losses of individual conductors.

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Time-Domain Homogenization of Windings in 2-D Finite Element Models

Cited by 34 publications

References 8 publications

Review of multidisciplinary homogenization techniques applied to electric machines

Review of multidisciplinary homogenization techniques applied to electric machines

Modeling and Analysis of Electric Motors: State-of-the-Art Review

Efficient modeling of coil filament losses in 2D

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