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Calculation of the rotational power loss in electrical steel laminations from measured H&oarr; and B&oarr;

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2 Author(s)
Atallah, K. ; Dept. of Electron. & Electr. Eng., Sheffield Univ., UK ; Howe, D.

An expression is derived for the calculation of the rotational power loss in electrical steel laminations, i.e., the iron loss associated with the torque caused by the angle of lag between H&oarr; and B&oarr;. It is shown that for a nonpurely rotating flux density, i.e., noncircular flux density loci, the instantaneous angular velocity of the flux density vector can vary substantially during a cycle, and must be accounted for in the calculation

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Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )