Builiding of a complete 6kW PV inverter with MPPT chargers

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-dex- Senior Member Joined: 11/01/2024 Location: Poland Posts: 101	Posted: 07:50am 17 Jun 2024         Murphy's friend said   Why not compromise, use 35mm sq and try to up your inductance? You can fit more turns by using parallel strands of enameled copper wire. Try 42 -49 strands of 1 mm diameter, thicker wire gets harder to wind onto a stack of those Sendust ring cores. I like to twist 7 strands initially to make individual 7 strand enameled wire cables. Then wind 6 or 7 of these the calculated number of turns around the core and connect all in parallel. There is an online calculator to find out how many 7 strand cables will fit in your core hole - this lets you know how many tuns will fit. Try not to squeeze in too many turns or the last one will be difficult to pull through. I did it with single wires in the case of MPPT chokes. 49 strands would be a challenge   I wind using to the welding cable, even the thick one is flexible enough to be twisted.   KeepIS said   Hi Mateusz, slightly off topic and back to the picture of that beautifully made little Linear you posted, did you build that or is it something made over there. Really nice either way. It is handmade but not mine, a small Ukrainian factory. GU74B lamp   kevinbacon said   Wow, that inverter looks awesome. Nice work. I'm presuming the cable you've used is equivalent to something like this? Yes, it's probably the same as my wire that was used to wind the toroid. I definitely do not recommend the cable you see in the post you quote.