I am trying to make a miniature alternating current (ac) generator from elementary first principles. Before I waste a lot of time (and copper wire), I wanted to check if the configuration as shown will actually produce a voltage, however small. The rotor (35mm dia) is fitted with 8 neodymium miniature bar magnets. I have read that adjacent magnets should have opposite polarities as shown (N,S,N,S etc.). I assume my arrangement is OK?
Main issue is how to wind the stator coils. I have read that these should also be wound differently in adjacent coils, for example starting at the 12pm position, clockwise, then anticlockwise, then clockwise etc. (The coils are wound in such that they make a loop 'facing' the bar magnet(s) as they rotate.
Assuming that this not all complete junk, what kind of phase (?) generator would this be?
Assuming that the rotor is spinning at e.g. 1000 rpm, what would the frequency of the induced voltage be and how would I calculate that? Presumably something to do with number of changes in magnetic field per rotation x rotation speed ?