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Old 01-07-2015, 12:12 PM   #1521 (permalink)
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Originally Posted by MPaulHolmes View Post
All the AC (ok not all!) current is between the capacitor and the IGBTs. Doesn't that mean the skin effect isn't very applicable?

40% current ripple in an inductor isn't unusual, so I would rule of thumb the skin effect is %40 as much of a factor (I don't really know, just guessing). But twisting smaller magnet wire into larger bundles isn't a deal breaker (though how it effects distributed capacitance I haven't figured out yet, it is a function of voltage differential though).

This shows the skin depth vs diameter
American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies and wire breaking strength

so you could theoretically twist together as many 26 gauge strands as you needed at 100khz, or as many 16 gauge wires as you needed at 10khz.

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