Electromagnetic AC and impulse levitations of conductive, dielectric, and magnetic ball

• Autorzy: Spałek Dariusz

Identyfikatory

DOI

10.24425/bpasts.2021.136040

• Języki publikacji: EN

Abstrakty

EN

The paper presents an analytical solution of levitation problem for conductive, dielectric and magnetically anisotropic ball. The levitation exerts either an AC or impulse magnetic field. Both the Lorentz and material electromagnetic forces (of magnetic matter) could lift the ball in a gravitational field. The electromagnetic field distribution is derived by means of variables separation method. The total force is evaluated by Maxwell stress tensor (generalized), co-energy and Lorentz methods. Additionally, power losses are calculated by means of Joule density and the Poynting vector surface integrals. High frequency asymptotic formulas for the Lorentz force and power losses are presented. All analytical solutions derived could be useful for rapid analysis and design of levitations systems. Finally, some remarks about considered levitations are formulated.

Słowa kluczowe

EN

levitation force; ball; impulse electromagnetic fields; AC electromagnetic fields; power losses

PL

lewitacja; piłka; straty mocy; pole elektromagnetyczne impulsowe; pole elektromagnetyczne prądu przemiennego

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2021
• Tom: Vol. 69, nr 1
• Strony: art. no. e136040
• Opis fizyczny: Bibliogr. 23 poz., rys.

Twórcy

autor

Spałek Dariusz

• Silesian University of Technology, Electrical Engineering Faculty, ul. Akademicka 10, 44-100 Gliwice, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).