Learning Forum

[Sherin]

I would like to calculate load loss of 1200Hz transformer of rating 1000kVA. I have included eddy current effect also for all winding as shown below.

[icellb1]

Hi StrandedLossAC is reported when using Litz wire model. StrandedLossAC = StrandedLoss + AC eddy current losses due to proximity effects and skin effects of the litz wire. If you are using stranded type of winding, Maxwell by default turns off eddy effect, and this is also what's required for litz wire model. It could be that under your analysis frequency for litz wire, the extra AC eddy current losses due to proximity effects and skin effects of your litz wire is not obvious.

[hungnguyendinhbao]

 

 

Excuse me?
I have 2 questions. You mean Strandedloss is DC loss? and by your explanation, when we use Stranded type, AC eddy current losses is zero, StrandedlossAC = Stranded loss?
I also used Stranded winding and Litz wire model, the switching frequency is 100kHz, current density is 6mm2, RMS current is 26A. The Strandedloss is 2.7W, StrandedlossAC is 54W. Is it true?

 

 

[Sherin]

Ok thank you for your reply.