I have a very high powered cold corona system (4 foot discharge tube, 15,000 volts). Even with that I have tried ozonating about 1/2 gallon of olive oil. After 12 hours it still had not gelled. I need to try and find a catalyst to speed up this reaction.
As for what you are looking for I would go with a cold corona system powdered by a 60hz high voltage transformer. The solid state transformer systems I have seen are not supposed to be run for more than a few minutes at a time. The old pig iron (60hz)transformers can be continuously run.