skin effect on boost coil in active pfc

[MacIntoshCZ]

I just realized that I can wind this coil with one wire only, because the current frequency is actually 2*50hz. And so the skin effect will be minimal. Even when the coil is switched 65Khz, the current decreases or increases around the rms value. It doesn't change direction. Am i right? Thanks

EDit:
Actually skin effect should affect only the part where is ripple ripple current

 

[ronsimpson]

In a PFC there is 65khz ripple current which is a little low to worry about skin effect. How large is the wire?
In my PFC the ripple goes to zero every cycle (65khz).

 

[MacIntoshCZ]

In a PFC there is 65khz ripple current which is a little low to worry about skin effect. How large is the wire?
In my PFC the ripple goes to zero every cycle (65khz).

Irms = 10A; I am using two 1mm2 wires. Lenght will be aprox 4meters...
And i am using ccm topology.
**broken link removed**

 

[fourtytwo]

The skin depth at that frequency is 0.255mm so better to use <=0.5mm wire. As your diagram shows you there is plenty of 65Khz current in your inductor so I hope you are using an appropriate core too.