Originally Posted by Jim Cate
Another option is to replace the controller with a simple bridge rectifier.
The feature that made the Air X so much better than other wind
generators at the time of its introduction
is its ability to automatically switch between 1, 2, or 3 windings to match the load to the available force. Or it may have been that the 3 windings were of different size - they were very secretive about the exact design. In any event putting in a traditional rectifier would result in loss of efficiency in light winds. OTOH it would certainly be more reliable and repairable, and probably wouldn't matter in the trades.