This is my first posting to this discussion board but I have been a long time reader. After looking through lots of back discussions I have yet to find anyone to propose what I am thinking about so I'm guessing it is either impractical or impossible. That's never stopped me before though.
As I understand three phase generation, star = 3^2 voltage and delta = 3^2 current of any one phase. With star, it takes less speed to reach the voltage of you battery bank and with delta it takes more speed but produces more current once it has reached that speed. My though was, what if you created a circuit that tied the phases into a star configuration under low wind conditions and switched to a delta configuration once the current output had reached a point where it would be better to go delta?
Using a shunt to sense the current and trigger a transistor that switched the phase configuration based on the voltage from the shunt or something of that nature should be sufficient I would think. This would produce a machine that would charge more efficiently across the entire RPM/Wind speed curve I would think as it would have the best of both worlds.
Can this be done, if it can how would you experts go about it, and why hasn't it been done or has it and failed?
Try some reading. Dinges posted a few links. This has been discussed to great length here over time.
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