Unique 3 Phase Master Book: Building 3 Phase Converters and Transformers
I was in the body shop business and constantly had a need to run three phase equipment.  When I finally got a shop with three phase power I was delighted.  Then I found out how much that power costs because of the demand factor.  I then developed a method of running the the motors that was unique.  It used a transformer instead of the rotary idler motor.  I found it started heavily loaded motors with ease and ran them at full power. I have taught these methods for a number of years now. I sold a copy of my DVDs to a commercial rotary converter company and now they are manufacturing a transformer converter.  Imitation is the best form of flattery.