I am building a wind turbine alternator with 300 turns of 19 ga wire. 12 coils 3 phase in star.
magnets are neo. rare earths with a surface field of 4174 guass Brmax 14800 gauss and Bhmax 52MGOe. How much electricity can I expect at 200 rpm
E = E max sin 2 pi f t single phase in each coil
Emax = NAB.2pi. f
E max = 300x your area in m2 x 1.48 x 2 x 3.14 x (200/60)
Adjust this fig for 12 coils, 3 phase.
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Japan is doing its best to put a dampener on relying on the factory across the way, China, by developing and using technologies which do not rely on rare earth metals.
Toyota and at least two of its suppliers are forging ahead on technology that would reduce the use of rare earth magnets in automotive engines destined for electric and hybrid cars.
