Nd-fe-b permanent magnet without dysprosium, rotor assembly, electromechanical transducer, wind turbine
OwnerSilvio Semmer, Adriana Cristina Urdainventors
Life of this patent
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Abstract
An Nd—Fe—B permanent magnet is disclosed. The Nd—Fe—B permanent magnet includes 28-34 weight % of rare earth elements, where the content of Dy is smaller than 0.1 weight % and the Nd—Fe—B permanent magnet has a spatial extension parallel to a magnetization direction of the Nd—Fe—B permanent magnet which is larger than 30 mm. Further described is a rotor assembly for an electro-mechanical transducer. The rotor assembly includes at least one of such an Nd—Fe—B permanent magnet. Further described is an electromechanical transducer including such a rotor assembly and a wind turbine including said electromechanical transducer.
Claims9
A Nd—Fe—B permanent magnet comprising:
- 28-34 weight % of rare earth elements, wherein the content of the rare earth element Dy is smaller than 0.1 weight %,
- wherein the Nd—Fe—B permanent magnet has a spatial extension parallel to a magnetization direction of the Nd—Fe—B permanent magnet which is larger than 30 mm.
Dependencies are inferred from the claim text.