azotic wrote:

I do have some comercial VFD"s and a couple of 3-Phase motors, and your
right
comparison is always a good idea. At this time i want to learn thru doing,
time and
cost are not a factor when have fun.
Definitely check out International Rectifier. They have a bunch
of reference designs and kits for making VFDs in a variety of
sizes. These are for both PM and induction motors. The
reference designs can be bought with PC boards, but the
published data sheets on them have not only schematics but PC
board layouts for you to study.

Jon