Abstract
A new amorphous Fe-based alloy, Metglas <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> 2605 HB1M, has been developed for distribution transformer cores, modifying the chemical compositions of a conventional alloy. The distribution transformer model cores based on HB1M and conventional Metglas <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> 2605 HB1 alloy were annealed with magnetic field and then evaluated on their acoustic and soft magnetic properties. It has been found that A-weighted sound power levels and exciting power of HB1M-based cores are lower than those of HB1-based cores. These transformer performance improvements result from the magnetic anisotropy being induced more easily in HB1M than in HB1 alloy.
Published Version
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