I’m in the process of making an axial flux generator for my VAWT , but find it difficult to digest all the information available on various websites. I’d like to know what is the best shape of coils, depending on the configuration of magnets.
The information I found on different forums is sometimes confusing and since I’m not an expert I hope someone here will help me to get my head around it.
I understand that for a single disc configuration (like the one below for example) the coil should be big enough, so that the coil legs pass over two magnets and cut thru the flux lines.
My problem is that I want an axial flux generator with two discs of magnets, yet found information on some website that the coil shape should be the same for this case also.
As the direction of magnetic field would be different on two sides of coil, would the the generated currents not cancel each other?
With the mainly vertical direction of magnetic flux (depending on magnet strength, gap size, etc…) wouldn’t I be better to have the coil shaped similar to the shape of magnet?
Please let me know what you think about the best configuration.
Many thanks in advance…