Loss Characteristics (Lucas Model)

The loss in the transformer core is modeled as the combination of two different kinds of loss: Eddy current loss and hysteresis loss.  These losses are incorporated into the CT model through a current source in parallel to the magnetizing current source (see graph below):

 

 

where the eddy current is calculated as,

 

 

with,

 

 

where,

 

Secondary turns

 

And the hysteresis current is calculated as,