Rating of Machines Excited with Neodymium and Ferrite Magnets

Tadeusz GLINKA, Stanislaw GAWRON, Tomasz WOLNIK

Abstract

Electric machines can be excited with neodymium or ferrite magnets. Currently, neodymium magnets are widely used. The price of neodymium magnets increases every year, which affects the price of electric machines. In the article, on the example of synchronous generators with the number of pole pairs p = 2 and the same external dimensions of the magnetic circuit: D₁=135 mm and l_Fe=100 mm, the rated power of machines excited by neodymium and ferrite magnets has been determined.

Keywords

electric machines, permanent magnets, Nd₂Fe₁₄B, SrFe₁₂O₁₉, BaFe₁₂O₁₉

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