![]() ![]() ![]() So what if we use two circuits of different coil counts? Each circuit will have a different cut in speed. In this example, in light winds the 9 coil side will start making power, without loading down the windmill too much. As the wind increases, the 5 coil side will start making power and this will add to the current already produced by the 9 coil alternator. Our alternator power curve is starting to follow the winds power curve. This alternator is a 1X9C 1X5C. Note we need to use separate bridge rectifiers for each circuit, as they run at different voltages. |
We can try different combinations to get a power curve that works best with our wind conditions and turbine performance. Here we have one 6 coil circuit and 2 4 coil circuits in parallel.
Its a 1X6C 2X4C.
A real life example.
Here is a staggered stator build I put together a couple of years ago. Its a dual stator windmill, so I had lots of coil combinations to play around with. I ended up using a 1X6C 1X5C 2X4C 3X3C configuration. This gave 4 different cut in speeds. The windmill starts producing power in lights winds and has a smooth output up to its furling speed at about 17 amps. The windmill it replaced had a maximum output of 20 amps, but spent most of its time making no power, because it was not designed to use low wind speeds. This new staggered stator windmill makes more power over the course of the day, because its using low winds and can still make good power in high winds.
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