Two options exist for using single phase motors. We evaluate your application and will supply the necessary motors for your site conditions and equipment.
1) Utilize direct signals with single-phase electronically commutated motors to command the speed.
2) Utilize a variable frequency drive (VFD) that is capable of inputting single-phase power and converting to a three-phase power output. For these VFDs to work, the fan motor will typically need to be replaced with a motor capable of receiving three-phase power.