...
>  Note that if you do NOT use a transformer, then you will have a
>triangle-type output and will not be able to ground the center point
...
I have distant plans of a small wind power plant.
I have been thinking about a 400V 3-phase generator like this:
DC input is +340VDC, GND/Neutral, and -330VDC
Switching stages are one pair IGBT(or something) for each phase, conecting
to +, -, or both off.
The wind generator charges large lead batteries.
For best performance i connect series of batteries to achieve the named
voltages above (lowest loss, cheapest, and best peak power), but it is very
lethal *:(
Safer to use a 48 or 60V battery configuration and a push-pull converter to
get high voltage DC...
/Morgan

/  Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \
\  mrt@iname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331    /