Prediction of magnetic power losses in soft laminations under DC-biased supply

Barbisio, Edoardo; Bottauscio, O.; Chiampi, Mario; Fiorillo, F.; Ragusa, Carlo Stefano

doi:10.1016/j.jmmm.2004.11.553

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…To investigate one and two dimensional (1&2-D) hysteretic and loss properties of ferromagnetic materials, researchers has proposed various hysteresis models such as Jile-Atherton (J-A), Energetic, E&S, and Preisach models [14]- [16], [25]- [29]. Concerning the physical mechanisms of magnetization, the Preisach model has been presented and developed from the perspective of a stringent mathematical definition to accurately model the hysteresis nonlinearity and predict the magnetic characteristics [30], [31]. It is known that the hysteretic and loss characteristic depends closely on the specific forms of magnetizations.…”

Section: B Static Hysteresis Model and Its Parameter Identificationmentioning

confidence: 99%

Study on Dynamic Hysteretic and Loss Properties of Silicon Steel Sheet Under Hybrid Harmonic and DC Bias Excitation

Zhao

Wang

et al. 2020

IEEE Access

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The dynamic and static hysteresis properties as well as loss properties of grain oriented (GO) silicon steel sheet are measured under the AC-DC hybrid excitation containing both DC bias and harmonic components. The influence of the DC-biasing magnetic field, harmonic orders and phase shift angles on the iron loss is analyzed in depth based on the experimental data under different excitations. A dynamic hysteresis model and the parameter identification method is presented to simulate the asymmetrical hysteresis curve with minor loops. According to the equivalence between loss separation and field separation, the static part of magnetic field intensity are calculated by an improved Preisach model, while the dynamic parts are obtained by fitting the classical loss as well as excess loss. The consistency between simulation and measurement verifies the effectiveness and accuracy of the proposed method.

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Section: B Static Hysteresis Model and Its Parameter Identificationmentioning

confidence: 99%

Study on Dynamic Hysteretic and Loss Properties of Silicon Steel Sheet Under Hybrid Harmonic and DC Bias Excitation

Zhao

Wang

et al. 2020

IEEE Access

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“…However, it requires heavy numerical implementation, because one must compute at each instant of time the state of each switching Preisach hysteron. An example of DPM application by use of Finite Element Method (FEM) analysis in DC-biased nonoriented Fe-Si sheets up to a few kHz is discussed in [30]. The case of PWM waveforms with 2n minor loops of peak-topeak amplitude 2Jp nested into a major loop was treated in [31] by combination of the SPM and the Statistical Theory of Losses (STL).…”

Section: Js Pirr(mentioning

confidence: 99%

Loss Prediction in DC-Biased Magnetic Sheets

et al. 2019

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Power losses in soft magnetic materials can be solidly assessed by the Statistical Theory of Losses (STL), which provides physical foundation to the concept of loss separation. The theory is however limited to the conventional case of symmetric hysteresis loops and cannot be straightforwardly applied for a magnetic core operating under a DC bias. We show in this paper that such constraint can be released by combining the STL with a simplified approach to the Dynamic Preisach Model. This approach leads to the more affordable Static Preisach Model, with largely reduced computation time. In this way the hysteresis and excess loss components, with and without DC bias, are identified and calculated starting from a minimum set of experimental data. We provide a wide-ranging experimental validation of the theory, which is applied to the behavior of the energy loss versus frequency, measured up to f = 1 kHz, in non-oriented and grain-oriented iron-silicon sheets and in iron-cobalt alloys, subject to different polarization bias levels.

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“…In a magnetic core, the total core loss can be separated into hysteresis, classical eddy current and excess losses. The classical eddy current loss is proportional to the square of the time derivative of flux density [6], and for a laminated core, it can be expressed as (1) where e is the thickness of material, σ the conductivity of material, β the geometric coefficient.…”

Section: Derivation Of the J-a Dynamic Hysteresis Equationmentioning

confidence: 99%

“…The energy balance process in a magnetization can be expressed as (6) where He is the effective field, He=H+αM, δ the direction coefficient, δ=1 for dH/dt>0, and δ=-1 for dH/dt<0, and k the pinning coefficient.The term of left side represents the actual magnetostatic energy, the right side represents the energy input and energy lost to pinning effect.…”

Section: Derivation Of the J-a Dynamic Hysteresis Equationmentioning

confidence: 99%

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Calculation of core losses under DC bias and harmonics based on Jiles-Atherton dynamic hysteresis model combined with finite element analysis

Yang

Zhu

2017

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

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This paper presents a method to calculate the core losses in SiFe laminations under magnetizations with DC bias and harmonics. DC bias is usually generated by the ground return current of high voltage direct current (HVDC) system intrude into the windings of neutral-grounded transformers, which leads to increase of harmonics and core loss. For accurate calculation of core losses under DC bias, the Jiles-Atherton (J-A) dynamic hysteresis model is incorporated into the finite element method. The J-A dynamic hysteresis model is constructed by combining the traditional J-A hysteresis model with the models of instantaneous eddy current and excess losses. To account for the DC bias, the J-A dynamic model was modified by adjusting the parameters of instantaneous excess loss model. The theoretical results are verified by the measured results by a Single-Sheet Tester (SST 500).

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Prediction of magnetic power losses in soft laminations under DC-biased supply

Cited by 6 publications

References 4 publications

Study on Dynamic Hysteretic and Loss Properties of Silicon Steel Sheet Under Hybrid Harmonic and DC Bias Excitation

Study on Dynamic Hysteretic and Loss Properties of Silicon Steel Sheet Under Hybrid Harmonic and DC Bias Excitation

Loss Prediction in DC-Biased Magnetic Sheets

Calculation of core losses under DC bias and harmonics based on Jiles-Atherton dynamic hysteresis model combined with finite element analysis

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