Three phase converter - capacitor switching
I have a fairly finished product. It works very well. I've used my lathe to fab a couple of pulleys.

I've put up a page that describes the project.

The essential of the answer is that monitoring the voltages is clearly not the way to solve this. Current transformers provide the appropriate information to the micro controller. This is a very simplified schematic. I'll be drawing up a complete schematic as I go along.



The capacitor bank is switched on the condition of keeping the current at L2 between half and equal to the current at L3.

Thanks, Dan.