ABSTRACT
The core of the power transformer is usually made of laminated cold-rolled magnetic steel that is grain
oriented such that the rolling direction is the same as that of the flux lines. This type of core construction tends
to reduce the eddy current and hysteresis losses. The eddy current loss P
is proportional to the square of the
product of the maximum flux density B
(T), the frequency f (Hz), and thickness t(m) of the individual steel
lamination.
