Welcome aboard!
This might help, too:
The generator will have roughly the same EMF (electromotive force) on each of the segments shown in the diagram. Eg, the EMF in 1-4 is the same, but out of phase with, the EMF in 3-6. The segments shown are actually groups of wire wound through particular areas of the stator. Different connections will allow you to add the EMF's for either higher or lower voltage, lower or higher current.
You have the highest voltage and lowest current from the series-star connection in the upper left. You have the opposite; lowest voltage and highest current from the parallel delta connection in the lower right.
I said before that the EMF is "roughly" the same in each segment. If there are slight differences in the phase groups, then the imbalance can cause a problem in the Delta configurations, but not the Star configurations.
Each of the various connections also represents a different range of operating speed. You must bear this in mind if the prop on the windmill is not to run too slow or too fast. Either can be bad when most props have a speed range where the work the best.
Steven Fahey
