>> At a certain point, roughly 400Hz, the delta 
>> configuration gives
>> a lot more wattage

> Delta or star, the energy is the same. The reason why it 
> require a
> star to delta conversion is to avoid huge current spikes 
> at the moment
> of start spinning, nothing more.

It may relate to placing the output directly across the 
battery without a buck converter. In that case a high 
voltage per RPM start mode is replaced by a lower output per 
RPM mode when the latter has enough voltage to provide 
charge. If a buck converter was used the Star configuration 
could be used throughout. There may however be other issues.


        Russell


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