Computation of Core Loss from a Single-Frequency Loss Curve
The principles of the computation algorithm are summarized as follows.
The iron-core loss is expressed as:
where the eddy-current loss is
the hysteresis loss is
and the excessive loss is
Therefore
The classical eddy-current loss coefficient is calculated directly as
where s is the conductivity and d is the thickness of one lamination sheets.
Minimize the quadratic form to obtain K1 and K2.
where Pvi , Bmi – the i-th point of the data on the loss characteristics curve.
The other two loss coefficients are obtained as
where f0 is the testing frequency for B-H Curve.
Related Topics
Calculating Properties for Core Loss (BP Curve) for Maxwell
Core Loss Coefficients for Electrical Steel
Core Loss Coefficient Extraction from Single-Frequency Loss Curve
Core Loss Coefficient Extraction from Multi-Frequency Loss Curves