... Limited Licensed re-use rights only Eddy currents Skin-effect Ferromagnetic materials Surface impedance Boundary element method The concept of surface impedance assumes that the behavior of the electromagnetic field is known a priori in the medium replaced by the impedance...

... 2018 Emerald Publishing Limited Licensed re-use rights only Magnetostatics Newton-Raphson method Circuit analysis Finite element modelling Ferromagnetic materials The use of magnetic equivalent circuits (MECs) in electrical engineering goes back to the work of Heaviside, Joule...

...@polymtl.ca 16 05 2016 13 11 2016 05 12 2016 © Emerald Publishing Limited 2017 Emerald Publishing Limited Licensed re-use rights only Induction heating Finite element modeling Magnetic hysteresis Ferromagnetic materials Magnetic measurement Induction heating...

... et al., 2011): (Equation 1) FEM Soft magnetic materials Ferromagnetic materials Magnetic anisotropy Non-oriented (NO) electrical steel sheets are usually composed of iron doped with silicon. Although their manufacturing process tends to confer isotropic properties (Kedous...

... did not exceed 29 percent. Dr Krzysztof Chwastek can be contacted at: krzysztof.chwastek@gmail.com © Emerald Group Publishing Limited 2015 CAD Electromagnetism Magnetic hysteresis Ferromagnetic materials Mathematical models The influence of processing parameters...

... and Kirchhoff's equation. The Mathcad algorithm for these calculations is presented in Table II , where symbol T denotes the period, dt – the step change of time, ω – the angular frequency, and μ₀ is the permeability of vacuum. Ferromagnetic materials Magnetic...

... and characteristics of power losses are illustrated in a graphic form. © MCB UP Limited 2003 Electromagnetism Eddy currents Ferromagnetic materials The computation of eddy currents is frequently an essential part of the design of an electrical equipment. Power losses caused by the eddy currents...

... M_o and differential susceptibility k = dM/dH will be determined from the anhysteretic curve (1), which is justified for weak eddy currents. © MCB UP Limited 2001 Ferromagnetic materials Inductance Hysteresis Eddy currents Air gaps 1. Materials Used...

... Ferromagnetic materials Hysteresis Optimization Composites Parameter estimation With a soft magnetic composite material (SMC), it is possible to design new structures of transformers or inductances, for low frequency applications, which use the isotropic properties of these materials advantageously...

...Marc Rouff; Mohammed Alaoui This article presents the 2D computation of the non‐linear dynamics of magnetic domain walls motion in ferromagnetic material such as crystalline, like Fe‐Si, in formulation H, with interactions between walls, and bulk magnetic induction. These terms have...

... audible noise of a frequency of 100Hz. For this phenomenon the inductor is responsible. Electromagnetic forces and magnetostriction are acting on the body of the device causing the sound emission. Here, the audible noise problem is investigated with respect to different ferromagnetic materials...

...Uwe Pahner; Ronnie Belmans; Kay Hameyer The standard Newton iteration scheme to solve a non‐linear system of equations obtained from the finite element methods is based on the updating of the field dependent element reluctivity. Usually, the manufacturer of the ferromagnetic material provides a BH...

...Dieter Lederer; Hajime Igarashi; Arnulf Kost; Toshihisa Honma The calculation of magnetic shielding with ferromagnetic material by an effective reluctivity method and a time step method based on the finite element calculation is investigated. The calculation results of both methods are compared...

... be calculated as the Lorentz force, i.e. from the formula: (5) Arc Electromagnetics Ferromagnetic materials Electric arc motion in electrical switches is continuously being investigated owing to its functional aspects. Arc motion velocity affects arcing time, arc voltage and energy, i.e...

... of an iterative algorithm. © MCB UP Limited 1998 Current Electromagnetics Ferromagnetic materials Pulse The magnetization degree of a permanent magnet depends significantly on the magnetizing method. Today, in the manufacture of permanent magnets and of equipment provided with the latter...

... analysis of circuits containing ferromagnetic cores. The magnetization M of ferromagnetic materials is described by modified Langevin’s formula[ 3 ]: (1) where M_T denotes the saturation magnetization at a given temperature, and α M describes...

...P. Del Vecchio; A. Salvini; L. Carrarini; G.M. Veca The aim of the authors is to discuss the magnetic behaviour of the ferromagnetic materials used in industrial applications, when the cited harmonic distortion of the excitation is working. To show the characterisation of the hysteresis loops...