Comparison of Iron Loss Models for Electrical Machines With Different Frequency Domain and Time Domain Methods for Excess Loss Prediction

Kowal, Damian; Sergeant, Peter; Dupré, Luc; Vandenbossche, Lode

doi:10.1109/tmag.2014.2338836

Cited by 79 publications

(43 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…H hy is the average hysteresis field for a sinusoidal induction and B p is the peak induction [9]. Assuming uniform penetration of magnetic flux, the classical eddy current power loss component P ed can be determined analytically as a function of the peak induction B p and the frequency that includes the material conductivity λ and the thickness d of the lamination [11]:…”

Section: Methodology a Statistical Loss Theory And Loss Segregationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Mechanical Stress on Excess Loss of Electrical Steel Sheets

et al. 2015

View full text Add to dashboard Cite

Effect of mechanical stress on the magnetic loss of electrical steel sheets is analyzed utilizing the statistical loss theory. The focus of the study is on the variation of the excess loss component with the applied stress and its correlation with the hysteresis loss. The model and its correlation are validated by performing comprehensive measurements at various combination of induction levels, frequencies and stresses. It is found that the excess losses can be modeled with sufficient accuracy by their correlation with the hysteresis losses over a wide range of stresses, frequencies and flux densities.

show abstract

Section: Methodology a Statistical Loss Theory And Loss Segregationmentioning

confidence: 99%

“…where G = 0.1356 is a model constant [11]. In [9], [10], and [12] a linear correlation between n and H ex , was obtained from measurements for non-oriented electrical sheets and grain oriented sheets with respect to the rolling direction.…”

Section: B Excess Loss Modelsmentioning

confidence: 99%

Effect of Mechanical Stress on Excess Loss of Electrical Steel Sheets

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The STL, with its simple analytical formulations for W exc (f) and W cl (f), has found general application in the literature, encompassing different materials (non-oriented and grain-oriented steel sheets, amorphous and nanocrystalline alloys, Fe-Co alloys, etc.) and different excitation regimes [Amar 1995, Atallah 1994, Barbisio 2004, Kowal 2015. It takes at face value the stochastic nature of the domain wall processes, which are assumed to occur, on the average, homogeneously across the sheet crosssection.…”

Section: Introductionmentioning

confidence: 99%

“…. It has however been pointed out in recent times [Zirka 2010, Zirka 2015] that the use of (1) would not be a good approximation for W cl (f) in actual materials excited at technical B p values, that is, with the magnetization regimes most frequently encountered in applications, because the condition of homogeneous magnetization reversal would not be generally fulfilled. The discrepancy between the actual evolution of the magnetization process and the one assumed by introducing (1) in the loss decomposition by the STL would be especially acute at high inductions, where the material constitutive equation is highly nonlinear, with the quasi-static hysteresis loop in non-oriented (NO) steel sheets taking a near-rectangular shape.…”

Section: Introductionmentioning

confidence: 99%

Loss Decomposition in Non-Oriented Steel Sheets: The Role of the Classical Losses

et al. 2016

View full text Add to dashboard Cite

The concept of loss separation based on the Statistical Theory of Losses (STL) provides complete and accurate description of the frequency dependence of the energy losses in non-oriented soft magnetic sheets under the assumption of uniform magnetization reversal through the sheet cross-section. This assumption, implying a simple standard formulation for the classical loss component, has been recently challenged in the literature, in favor of a non-uniform reversal mechanism, expected to prevail in highly non-linear materials, where saturation magnetization wavefronts are deemed to symmetrically propagate across the sheet thickness (Saturation Wave Model, SWM). Different conclusions regarding the dynamic loss analysis and its decomposition into the classical and excess loss components correspondingly emerge. In this paper we discuss detailed investigations on the broadband energy loss versus frequency behavior in different non-oriented Fe-Si and low-carbon steel sheets. The experiments can be fully and consistently described by the STL. This occurs, in particular, for high-induction values and near-squared hysteresis loops, a predictable condition for adopting the SWM, which fails instead to account for the experiments. Index Terms-Soft Magnetic Materials, Magnetic Losses, Non-oriented Steel Sheets, Classical Losses. J J t f K t J

show abstract

“…This core loss is a main contributing factor that decreases the power density [1,2]. Currently, core loss under the pulse width modulation control has been studied extensively [3][4][5], but relatively little has been discussed regarding core loss under SVPWM excitation. In particular, different control systems play different roles in core loss [6].…”

Section: Introductionmentioning

confidence: 99%

Core Loss Analysis of Interior Permanent Magnet Synchronous Machines under SVPWM Excitation with Considering Saturation

Feng

Zhang

2017

Energies

View full text Add to dashboard Cite

Abstract:Core loss is one of the significant factors affecting the high power density of permanent magnet machines; thus, it is necessary to consider core loss in machine design. This paper presents a novel method for calculating the core loss of permanent magnet synchronous machines under space vector pulse width modulation (SVPWM) excitation, taking magnetic saturation and cross coupling into account. In order to accurately obtain the direct and quadrature (d-q) axis, current in the given load condition, the permanent magnet motor model under SVPWM excitation has been modified, so as to consider the influence of magnetic saturation and cross coupling effects on the d-q axis flux-linkage. Based on the magnetic field distribution caused by permanent magnet and armature reactions, the stator core loss can be calculated with the core loss analytical model, corresponding to the rotational magnetic field. In this study, the method has been applied to analyze core loss in an interior permanent magnet synchronous machine, and has been validated by the experimental results. The influence of pole/slot number combinations on core loss in the same on-load condition is also investigated. This study provides a potential method to guide motor design optimization.

show abstract

Comparison of Iron Loss Models for Electrical Machines With Different Frequency Domain and Time Domain Methods for Excess Loss Prediction

Cited by 79 publications

References 11 publications

Effect of Mechanical Stress on Excess Loss of Electrical Steel Sheets

Effect of Mechanical Stress on Excess Loss of Electrical Steel Sheets

Loss Decomposition in Non-Oriented Steel Sheets: The Role of the Classical Losses

Core Loss Analysis of Interior Permanent Magnet Synchronous Machines under SVPWM Excitation with Considering Saturation

Contact Info

Product

Resources

About