INVESTIGATION OF CURRENT DENSITY, MAGNETIC FLUX DENSITY, AND OHMIC LOSSES FOR SINGLE-VEINED, LITZ AND FOIL STRUCTURED CONDUCTORS AT DIFFERENT FREQUENCIES

Abstract

Today, although medium and high frequencies have been provided a significant reduction in the size of machine, it is known that as the more frequency increases, the higher losses at conductors. In this study, wire losses of the same cross section but different structures are examined by finite elements method. Also, depending on the exchange rate in wires at conductors, changes of current density, magnetic flux density and ohmic losses were investigated. The use of different structured wires of conductors at different frequencies has been compared in terms of their losses, and given the graphics regarding to the design by special design software.

Keywords

• Conductor
• Wire
• Skin effect
• Litz and foil conductor
• Conductor losses.

FARKLI FREKANSLARDAKİ TEK-DAMARLI, LİTZ VE FOLYO YAPILI İLETKENLERİN AKIM YOĞUNLUĞU, MANYETİK AKI YOĞUNLUĞU VE OMİK KAYIPLARININ ARAŞTIRILMASI

Abstract

Günümüzde, orta ve yüksek frekanslar, makine boyutunda önemli derecede küçülme sağlamasına rağmen bu frekanslardan kaynaklanan kayıpları da beraberinde getirmektedir. Elektrik makinalarında meydana gelen kayıplar özel sargı tasarımları ile azaltılabilmektedir. Bu çalışmada aynı kesitteki tek damarlı iletken, litz iletken ve bakır folyo iletken kayıpları sonlu elemanlar yöntemi ile incelenmiştir. Ayrıca frekansın değişimine bağlı olarak iletkenlerdeki akım yoğunluğu, manyetik akı yoğunluğu ve omik kayıplar bir tasarım programı yardımıyla incelenmiş ve elde edilen grafikler verilmiştir.

Keywords

• İletken
• Tel
• Deri etkisi
• Litz ve folyo iletkeni
• İletken kayıpları.

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