A static hysteresis model for power ferrites

Nakmahachalasint, P.; Ngo, Khai D. T.; Vu‐Quoc, L.

doi:10.1109/tpel.2002.801000

Cited by 31 publications

(12 citation statements)

References 5 publications

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“…In general, most studies focus either on extracting a frequency-dependent winding model with a linear core assumption [3]- [7], or on modeling nonlinear properties of a specific magnetic material using a highamplitude and high-frequency excitation voltage [8]- [12]. Although it is claimed in [14] and [15] that they are able to handle the frequency-dependent and hysteresis effects inside the transformer at the same time, their models are obtained from an analytical [13], [14] or numerical [15] approach, i.e., based on physical equations or finite-element analysis, rather than a measurement-based one.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Dynamic Transformer Time-Domain Identification for Power Converter Applications

O’Driscoll

Ringwood

2014

IEEE Trans. Power Electron.

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Abstract-For flyback converter applications, an accurate model of the transformer is necessary for simulation studies, as well as a basis for model-based controller design. In general, transformer modeling has either focused on the winding model, using frequency-domain methods, or on the nonlinear core model, using time-domain methods. Nonlinear modeling is confined to the time domain and certain difficulties have precluded the use of timedomain methods for winding model estimation, resulting in the lack of integrated modeling approaches. This paper focuses on identifying a complete nonlinear dynamic model of a 3-winding transformer using time-domain system identification approaches. Our study demonstrates a possible way to handle the difficulties of working in the time domain and provides a model at least as accurate as that obtained with the frequency response data. In addition to the parameters of the Jiles-Atherton model, which is used to describe the nonlinear core behavior, the air-gap length is also computed from the experimental data to enhance the core model accuracy. The obtained transformer winding model, core model, and full model are experimentally verified.

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Section: Introductionmentioning

confidence: 99%

“…A variety of modeling techniques have been suggested to emulate the hysteresis properties in the magnetic material [8]- [12]. Among them, the Jile-Atherton (J-A) model [8], [9], which offers the best tradeoff between simplicity and accuracy, can be considered as the most suitable approach for our application.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Transformer Time-Domain Identification for Power Converter Applications

O’Driscoll

Ringwood

2014

IEEE Trans. Power Electron.

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“…3 where we show the distribution of the values of the B-field module on the surface of a saturated RM core, displaying a higher concentration on the central column. Therefore, the modeling of these ferrite inductors is a complicated task [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] as it involves solving nonlinear differential equations which cannot be solved by analytical equations. In order to model them it is necessary to measure the magnetic properties 7,8,9,12 and use design, simulation and Finite Element Analysis programs 14,15,17,18 .…”

Section: Introductionmentioning

confidence: 99%

Teaching the linked use of various softwares for the simulation of magnetic devices

Salas¹,

Pleite²

2013

Proceedings of the 2013 International Conference on Advanced Computer Science and Electronics Information

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-The modeling of ferrite inductors is a difficult task due to the nonlinearity of the magnetic fields and the great variety of shapes, sizes of the core and number of turns in the winding. This paper presents a procedure that integrates various standard softwares, modeling and simulation techniques and experimental measurements in order to simulate a soft ferrite inductor for use in a circuit simulator. This procedure is applied to the modeling and simulation of ferrite inductors widely used in the field of power electronics. It can be applied to undergraduate and postgraduate students and help them to understand the behavior of the circuits and the nonlinear physical phenomena involved in power electronics.

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“…In particular E cores are popular shapes due to their lower cost, ease of assembly and their winding [2]. In order to carry out precise simulations of a ferrite inductor it is necessary to include the nonlinear behavior of the core [3][4][5] and the geometrical effects in the model. Our aim is the modeling of E-type ferrite inductors (Figure 1(a)) by means of Finite Element Analysis (FEA).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the behavior and 2D modeling of ferrite inductors with E geometry: comparison with 3D model and real measurements

Salas

Pleite

2013

EPJ Web of Conferences

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Abstract. In this paper we propose and validate by experiment a practical method to compute by simulations the inductance of a ferrite inductor as a function of the current intensity level from the linear to the saturation regions. Our method combines the use of 2D Finite Element Analysis with experimental measurements taken in a laboratory environment. We also present and analyze results of the convergence and computational cost of the 2D and 3D simulations showing the reduction of computational cost when we chose the 2D simulation.

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A static hysteresis model for power ferrites

Cited by 31 publications

References 5 publications

Nonlinear Dynamic Transformer Time-Domain Identification for Power Converter Applications

Nonlinear Dynamic Transformer Time-Domain Identification for Power Converter Applications

Teaching the linked use of various softwares for the simulation of magnetic devices

Analysis of the behavior and 2D modeling of ferrite inductors with E geometry: comparison with 3D model and real measurements

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