I haven't modelled that part here, yet. It's something that came out of Thud's epic "MULE" thread: viewtopic.php?p=214408#p214408Kingfish wrote:On the connections between coils, it is apparent how the outer layers are wired though not obvious how the inner are connected with the flatness of the inside end-turns: How is this accomplished?
The original plan was to have a centrifugal fan doubling as the brace separating the two rotors. Now, I'm not sure that will be necessary....? It would be a continuous addition to the parasitic losses. The passive cooling from air flowing through the stator, around the large areas of exposed copper, should be pretty effective.Kingfish wrote:What is your plan for active cooling?
Yes. In fact I've just been contemplating this very point, as I'm starting to model it There will be an asymmetry, but there will still be the same number of conductors on each side, in total. Right? As the force acts from the core and not the coil, I assumed the asymmetry wouldn't be a problem.Kingfish wrote:The only issue I can foresee is that one side of the coil will have more pull due to the double-back unless the begin & end terminations are on opposite sides of the coil – so that you have the same count of conductors on each side. Make sense?
Linking on the endturn reduces the coil cross-section across the bridge (I'd rather avoid taking the link around the corner..... ). It's only for 1mm of length, though.Kingfish wrote:If the coil is tapered as you recently suggested, the end-turns do not contribute to the motor other than affecting losses, so that’s a good place to make the links to other coils.
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