Journal ArticleDOI
A dynamic equivalent circuit model for solid magnetic cores for high switching frequency operations
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TLDR
In this article, a dynamic equivalent circuit model of solid magnetic cores for high frequency operations in power electronic circuits is presented, where the effects of eddy current, domain wall motion, and hysteresis are taken into account by distributed equivalent resistors and distributed nonideal differential inductors, respectively.Abstract:
This paper presents a dynamic equivalent circuit model of solid magnetic cores for high frequency operations in power electronic circuits. The effects of eddy current, domain wall motion, and hysteresis are taken into account by distributed equivalent resistors and distributed nonideal differential inductors, respectively. The Preisach hysteresis model is employed to simulate hysteresis effects in the inductors. A discrete transform technique based on the transmission line method is adopted to develop a discrete model for numerical dynamic analysis. The resultant model is just a simple tridiagonal system of equations. Good agreement between computer simulations and measurements has confirmed the validity of the new model. >read more
Citations
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Modeling frequency-dependent losses in ferrite cores
TL;DR: This paper looks at the problem from the perspective of energy loss and proposes a different network for accurately modeling power loss in ferrite cores, which is different from the RL ladder network models both in the small-Signal and large-signal contexts.
Journal ArticleDOI
Time-domain simulation of mixed nonlinear magnetic and electronic systems
TL;DR: In this paper, the authors describe a technique for the simulation of complex magnetic systems intimately connected to any necessary drive electronics, where the system is split into two Kirchhoffian domains, one magnetic and one electric, supported by a virtual device called a magnetoelectric differential gyrator.
Journal ArticleDOI
Reduced-Order Modeling of High-Fidelity Magnetic Equivalent Circuits
TL;DR: In this paper, an HFMEC approach for laminated and solid magnetic cores is presented that avoids conventional geometrical simplifications and assumptions of uniform flux density, which can accurately capture the effects of magnetic saturation, high-frequency eddy currents, corner effects, and 3-D effects.
Journal ArticleDOI
Reduced-Order Dynamic Modeling of Multiple-Winding Power Electronic Magnetic Components
TL;DR: In this article, a general full-order HFMEC model of the multiple-winding power-electronic transformers is developed that incorporates magnetic saturation and the eddy current dynamics.
Electromagnetic transformer modelling including the ferromagnetic core
TL;DR: In this article, a time-domain transformer model is presented, which includes core phenomena such as magnetic static hysteresis, eddy current and excess losses, and the model comprises winding phenomena as eddy currents, capacitive effects and leakage flux.
References
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Mathematical models of hysteresis
TL;DR: A new approach to the scalar Preisach model of hysteresis, which emphasizes its phenomenological nature and mathematical generality, is described in this paper, which gives the necessary and sufficient conditions for the representation of actual hystresis nonlinearities by the scalareach model.
Journal ArticleDOI
Über die magnetische Nachwirkung
TL;DR: In this paper, the authors present a Hypothese einer formalen analogie zwischen der Jordanschen Verlustkomponente and dem dielektrischen Nachwirkungsverlust.
Journal ArticleDOI
An improved approach to power losses in magnetic laminations under nonsinusoidal induction waveform
Fausto Fiorillo,A. Novikov +1 more
TL;DR: In this article, it is shown that it is possible to accurately predict power losses in ferromagnetic laminations under nonsinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components on the magnetic induction derivative B.
Journal ArticleDOI
Simulation of the hysteresis phenomenon using Preisach's theory
TL;DR: A computer model for the hysteresis phenomenon in ferromagnetic cores is presented in this article, where the determination of the B-H trajectories is based on Preisach's theory, and requires, as input data, the extrado function B/sub e/(H) which is the upper bound of the limiting H loop.
Journal ArticleDOI
Discrete modelling of magnetic cores including hysteresis, eddy current and anomalous losses
TL;DR: In this article, a discrete dynamic model of a magnetic core including hysteresis, eddy current and anomalous losses is proposed, suitable for thin laminations and features a simple formulation and fast calculation.