The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Taking a 380000kVA/500kV large power transformer as an example, in this paper, the eddy current loss generated by leakage magnetic field in transformer tank is calculated by two 3-D finite element methods (FEM) and the factors to affect the computation accuracy of loss are discussed. By adding magnetic shielding to the surface of oil tank, the maximum magnetic flux density and total eddy current loss...
A method combining analytical and numerical solution for material homogenization is investigated to calculate 3D transient eddy current field and losses in nonlinear and anisotropic laminated core under the condition of obvious leakage flux. With this method, the high-order harmonics of field components can be considered, and the phase difference of the field components within the thickness of the...
This paper presents a new method of magnetic field analysis in three-phase induction motor cores taking account of 2-D vector magnetic properties of electrical steel sheet. An improved magnetic property model is proposed, in which the reluctivity and hysteresis coefficients are calculated using Fourier series expansion of measured B and H waveforms. The finite element formulation combined with the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.