Dave [ Parent ]
This is my idea on a wind generator in simple schematic form. The rotor is a 1/4 inch thick steel disk with milled depressions in which the round magnets are attached with a light press fit and epoxy. The schematic shows two but as many pairs of round magnets as desired can be used. The stator consists of a laminated bar of transformer steel obtained perhaps from a junk distribution transformer, it could also be made of a number of mild steel welding rods bound together in some way. The coils are wound around the stator. Using wood, rubber feet or other non magnetic material in the flux path greatly reduces the flux and the voltage obtained. Poles should be arranged to alternate the direction of flux through the stator with the flux lines going through the center of the winding as shown. A drawback of this concept is the parking of the magnets over the stator and high starting torque ... since it is decorative "propping" to get it going in light wind is not a huge problem. Once rotating the inertia of the steel disk and blades will carry it through the "cogging" point. [ Parent ]