Advanced iron-loss calculation as a basis for efficiency improvement of electrical machines in automotive application

Steentjes, Simon; Leßmann, Marc; Hameyer, Kay

doi:10.1109/esars.2012.6387502

Cited by 29 publications

(24 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The so-called Parametric Magneto-Dynamic (PMD) model of NO steel sheets is obtained using this method [48], [50], [84]. The presented method is based on (5) and (6), and gives a clear understanding of the underlying physical phenomena of non-linear diffusion of the electromagnetic field inside the discussed NO steel sheets. Because all the electromagnetic variables depend on time t, this dependence is, for the sake of clarity in the following equations, not displayed explicitly anymore.…”

Section: Parametric Magneto-dynamic Modelmentioning

confidence: 99%

Iron-Loss and Magnetization Dynamics in Non-Oriented Electrical Steel: 1-D Excitations Up to High Frequencies

Petrun

Steentjes²

2020

IEEE Access

Self Cite

View full text Add to dashboard Cite

This paper presents a thorough introduction to and application of the Parametric Magneto-Dynamic (PMD) model of soft magnetic steel sheets. The theoretical background is reviewed, and two different ways are discussed to account for the viscosity-like effects originating from microscopic eddy currents. This is followed by the theoretical calculation of magnetization dynamics and dynamic hysteresis loops in Non-Oriented (NO) electrical steel. Both classical and viscosity-extended approaches are discussed, with respect to the ability of replicating the dynamic hysteresis loop shape and iron-loss under sinusoidal excitation waveforms up to high excitation frequencies. Comparisons against measurements are analyzed for M400-50A and M235-35A NO electrical steel over a wide range of magnetic flux density and excitation frequencies. The proven accuracy and efficiency of the PMD model make it a valuable tool for the calculation of iron losses in electrical machines and transformers, as well as for an in-depth study of magnetization dynamics in individual laminations.

show abstract

Section: Parametric Magneto-dynamic Modelmentioning

confidence: 99%

Iron-Loss and Magnetization Dynamics in Non-Oriented Electrical Steel: 1-D Excitations Up to High Frequencies

Petrun

Steentjes²

2020

IEEE Access

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to statistical loss theory, the core losses can be classified into three components, namely, hysteresis, classical eddy current and excess losses [23]. A number of loss formula based on the loss separation approach has been reported in the literature [24][25][26][27], which can be applied to compute core losses at post-processing stage in FEM analyses of electrical machines.…”

Section: Introductionmentioning

confidence: 99%

Effect of mechanical stress on different core loss components along orthogonal directions in electrical steels

et al. 2019

View full text Add to dashboard Cite

The paper deals with the characterisation and modeling of the mechanical stressdependency of magnetic losses along two orthogonal directions in non-oriented electrical steels. Significant anisotropy effects are highlighted. Using the three-term loss separation approach, the different loss components are computed at each stress level for a wide range of frequency. Stress dependence of the core losses can be described in terms of the hysteresis and excess loss components, classical losses being assumed to be constant as a function of stress. Variations of the model coefficients with stress along the two principal directions are discussed. Such a model can be used for computing the losses in finite element analysis of rotating electrical machines or T-joint of transformers.

show abstract

“…In order to improve common iron-loss models to these conditions, rotational losses and higher harmonics have to be considered by [6,[21][22][23][24]:…”

Section: Prediction Of Iron Lossesmentioning

confidence: 99%

“…To further enhance the properties of electrical motors the accurate determination by idealized model assumptions of the locally distributed iron losses alone is not sufficient [5,6]. Other iron loss generating effects than hysteresis, Foucault and eddy current losses have to be considered.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Operating point resolved loss computation in electrical machines

Pfingsten¹,

Ruf²,

Steentjes³

et al. 2016

Archives of Electrical Engineering

Self Cite

View full text Add to dashboard Cite

Magnetic circuits of electromagnetic energy converters, such as electrical machines, are nowadays highly utilized. This proposition is intrinsic for the magnetic as well as the electric circuit and depicts that significant enhancements of electrical machines are difficult to achieve in the absence of a detailed understanding of underlying effects. In order to improve the properties of electrical machines the accurate determination of the locally distributed iron losses based on idealized model assumptions solely is not sufficient. Other loss generating effects have to be considered and the possibility being able to distinguish between the causes of particular loss components is indispensable. Parasitic loss mechanisms additionally contributing to the total losses originating from field harmonics, non-linear material behaviour, rotational magnetizations, and detrimental effects caused by the manufacturing process or temperature, are not explicitly considered in the common iron-loss models, probably even not specifically contained in commonly used calibration factors. This paper presents a methodology being able to distinguish between different loss mechanisms and enables to individually consider particular loss mechanisms in the model of the electric machine. A sensitivity analysis of the model parameters can be performed to obtain information about which decisive loss origin for which working point has to be manipulated by the electromagnetic design or the control of the machine.

show abstract

Advanced iron-loss calculation as a basis for efficiency improvement of electrical machines in automotive application

Cited by 29 publications

References 5 publications

Iron-Loss and Magnetization Dynamics in Non-Oriented Electrical Steel: 1-D Excitations Up to High Frequencies

Iron-Loss and Magnetization Dynamics in Non-Oriented Electrical Steel: 1-D Excitations Up to High Frequencies

Effect of mechanical stress on different core loss components along orthogonal directions in electrical steels

Operating point resolved loss computation in electrical machines

Contact Info

Product

Resources

About