Rotary Phase Converter
- $2k for 30 hp - https://www.phoenixphaseconverters.com/rotary-phase-converters/15-30-hp-rotary-phase-converter-cnc-rated-precision-balanced-voltage-tefc.html
- $1290 for 20 hp. Says it can run up to 3x the load depending on load conditions. - http://www.ebay.com/itm/20-HP-Rotary-Phase-Converter-CNC/141714675591?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D38636%26meid%3D49023c6498ad4e19b01b458a0de967ce%26pid%3D100005%26rk%3D1%26rkt%3D2%26sd%3D141187851227