Static converters should have never been invented. (unless you want to consider a Variable Freq Drive a static converter)
Build yourself a rotary phase. It will run anything.
As the absolute most basic rotary converter is nothing more than a 3 phase motor that is running on only 2 phases. You can start it with a pull rope and dont even need capacitors, switches and all that other stuff. (it works but is a pain to work with).
The capacitors and other stuff are only there so you can install a button switch for control and they make life easy.
If you call up a phase converter manufacturer, they will tell you that you need a "balanced" converter or your CNC stuff wont work. This is not entirely true so dont take it to seriously. I was doing research on my servo drive (Digitax brushless servo) and found out that the input to my servo drive was rectified into DC anyhow!! I had a short conversation with the Digitax tech guys and got the feeling that all servo drives get rectified into DC internally.
Hope this helps.
Murphy  |