Application Note: Sizing Three-Phase Inverters for Single-Phase Power Applications Please refer also to the Inverter Instruction Manual AN032404-1 Rev. A Hitachi America, Ltd. © 2007 Hitachi America, Ltd.
So upsizing the drive ameliorates the ripple problem as well. The rule of thumb Hitachi recommends is to start with the 3-phase motor’s nameplate full load amperage (FLA) rating and double it. Then select an inverter with this doubled continuous current rating.