I am Vasudev here. I observed in the reference design that pfc inductor is wound with single strand copper wire. If the pfc is operating at 65khz ,even if the current ripple is minimum wont there be skin effect present and I have also observed in the reference design that thermal imaging shows that inductor temperature is not very high(which says skin effect is not prominent). But I am facing inductor heating issue . I am using iron power core with single strand winding . so my question is , is it skin effect or core loss which is heating up the core?
power - 1.8kw
peak current of inductor - 8 amps max
I am using 1.8mm thick copper wire.
pfc inductance - 450u at no load . Inductor will saturate at 13 amps.