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### Wyznaczanie rozkładu i gęstości prądów wirowych w ferromagnetyku z uwzględnieniem histerezy magnetycznej

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Warianty tytułu
Konferencja
35 Międzynarodowe Sympozjum Maszyn Elektrycznych. Maszyny Elektryczne w Energetyce. SME'99/sympozjum(XXXV; 1999; Kazimierz Dolny, Polska)
Języki publikacji
PL
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PL
EN
The paper presents a method of taking magnetic hysteresis phenomenon into computation of induction distribution and the eddy current distribution in the ferromagnetic material. The calculations have been done for the simplified case. It is assumed that the magnetic induction yector nas oniy one component and the eddy currents flow in the surfaces, which are perpendicular to the direction of the induction vector. The eddy currents appear in a cross-section of the ferromagnetic solid block or in the cross-section of a electrotechnical sheet. The principles of the area discretization, in which the eddy current can occur, are shown in [5,6]. There was formulated the differential matrix equation, which describes the induction changes in a ferromagnetic solid bock. In this equation it was assumed, that the relationship between induction B and magnetic field intensity H is non-linear but unique. As a result of hysteresis phenomenon the magnetization in different points of ferromagnetic cross-section will be occurred according to another curves. Therefore the differential matrix equation (4) was completed by the additional relations (6-10), which show the function between the induction values and the magnetic field intensity values in the individual parts of the magnetic circuit cross-section. The method of the magnetization curves description is proposed in this paper. On these curves there can move the points with (H, B) co-ordinates. The algorithm of the calculation of the induction distribution and the eddy current distribution is also presented. In the end part of this article the calculation results of the induction changes and the eddy current changes for given magnetic circuit parameters are shown.
Słowa kluczowe
PL
Rocznik
Tom
Strony
385--393
Opis fizyczny
Bibliogr. 9 poz., rys.
Twórcy
autor
• Instytut Elektromechanicznych Przemian Energii Politechnika Krakowska
Bibliografia
Typ dokumentu
Bibliografia