... transformer cores. Design/methodology/approach The loss separation theory, the inverse Preisach model and the eddy current equations accounting for the skin effect are applied to generate the dynamic hysteresis model. The fixed-point technique is implemented to improve the nonlinear convergence. A filter...

...Nebojsa B. Raicevic; Slavoljub R. Aleksic; Ilona Iatcheva; Marinko Barukcic Purpose This paper aims to present a new approach to the numerical solution of skin effect integral equations in cylindrical conductors. An approximate, but very simple and accurate method for calculating the current...

... rotor slots were validated by measurements. Findings An improvement of the performance characteristics – the extension of the stable operating range of the generator – was obtained for rectangular copper rotor bars. The improvement is the result of strong skin effect in the squirrel rotor cage...

... be contacted at: hiroshi.masuda.4f@stu.hosei.ac.jp 02 10 2018 07 02 2019 25 02 2019 © Emerald Publishing Limited 2019 Emerald Publishing Limited Licensed re-use rights only Induction heating Eddy currents Topology optimization Skin effect Design optimization methodology...

...Jingsong Li; Lixiang Wang; Qingxin Yang; Shanming Wang; Yongjian Li; Changgeng Zhang; Baojun Qu Purpose Due to existence of skin effect under rotational excitation, especially to high-frequency motors and power transformers run at the frequency of hundreds or even thousands of hertz, core losses...

... measurement and numerical simulation is proposed. The effects of the frequency and phase angle on the stray-field loss are analyzed. © Emerald Publishing Limited 2017 Emerald Publishing Limited Licensed re-use rights only Magnetic flux density Skin effect Harmonic excitation Magnetic steel...

... Publishing Limited Licensed re-use rights only Eddy current Applied electromagnetism Inductance Inductor design Proper generalized decomposition Skin effect Rectangular conductors play an important role in planar transmission line structures, such as microstrip lines, coplanar strips...

... the bundle and between bundle layers as well as the skin effect. Second, low- and medium-frequency approximation of Dowell’s equation for the litz-wire winding is derived. Third, a derivation of an analytical equation is given for the optimum strand diameter of the litz-wire winding independent...

... and the ferromagnetic materials’ magnetisation behaviour simultaneously using varying levels of detail so that the interplay between skin effect (i.e. eddy currents) across laminations and hysteresis can be resolved accurately. Therewith, adequate models for specific applications can be selected. (Equation 6...

... and k the following condition is fulfilled then the computations for instant t_i are finished and the computations for time instant t_i+1 start. Electrical machines Skin effect Non‐linear effects Development of induction motors...