We built a 1000 watt wind wind load design example pdf to help charge the battery bank that powers our offgrid home. It’s a permanent magnet alternator, generating 3 phase ac, rectified to dc, and fed to a charge controller.
The magnets spin with the wind, the coils are fixed, so no brushes or slip rings necessary. DIY Amp Hour meter for monitoring charge! We had 12″ steel disks hydro cut. We cut a template for mounting the magnets. Then we mounted 12 grade n50 magnets around the outside edge. We then built a form, and poured the resin with hardner. We wound the nine individual coils, soldered them in a 3 phase wye configuration, and encased them in resin.
Use 70 turns of single strand for 24 volts. 3 phase diagram shown here shows 3 stator coils. 1,4, and 7 are series together, 2,5, and 8 are series together, and 3,6, and 9 are series together. 15 for the series star, 1-y diagram.