It is seen that on increasing the frequency .. while keeping voltage constant..
The eddy losses doesnt change..
Cn neone hlp me with ds??

 

It is seen that on increasing the frequency .. while keeping voltage constant..
The eddy losses doesnt change..
Cn neone hlp me with ds??

Wrong.

 

Eddy current should stay constant as you described. If frequency increases while voltage stays constant, the flux will decrease. The volts per turn for any winding, and for the core material where eddy currents take place, will remain constant. The induced volts per turn equals -d(phi)/dt. Or in the frequency domain, -(phi)*omega. Frequency omega increases and flux phi decreases by the same ratio. Thus the volts per turn remain constant.

In reality. the losses should increase a little because cores wound from tape or using stacked laminations are designed so that thinner laminations/tape are used at higher frequency. This reduces eddy current losses. I would expect a small increase in eddy current losses using the above scenario. Did I help?

Claude

 

this was helpful. i didnt think in the frequency domain.
thanks