How do I Wire a 6-phase hairpin alternator to a SQL-150A Rectifier for Wind Generator

[Jon Stephens]

The Alternator stator is the Large case, 138.5mm Outer Diameter x 109mm Inner Diameter. It has (6) leads, which I think is like (2) Alternators. Lead A,B,C go to one alternator, and leads D, E, and F, go to the other alternator. So how would I wire it? Would I need (2) rectifiers or just one? And what gauge wire would work best?

 

[fechter]

I don't know about that particular model, but in general, any 3 phase alternator will have 3 sets of windings, each with two ends. This gives you the option of wiring in either delta or wye. Using an ohmmeter, you can figure out which wires are connected to each other and you should have 3 sets of coils. For a generator, you probably want to use a wye (or star) configuration where one end of each winding is connected together, leaving 3 wires that go to a 3 phase rectifier.

It could be a 6 phase, but if so, there would be some visible connection points between the wires.

You probably need to get a rotor spinning in there to really see what's going on. The rotor magnets have to be the right size to energize one turn of the winding. If you can find a picture of the matching rotor it may be helpful.