Using a variable frequency drive for non-motor loads

摘要

An apparatus for effectively powering non-motor loads with solar power includes a solar array for producing DC power; a variable frequency drive (VFD) connected to the VFD for converting the solar DC power to AC power; a power transformer connected to the VFD; and a non-motor load connected to the power transformer. The power transformer is selected to provide a desired operating voltage to the non-motor load, typically 120 V. The power transformer may have a primary with a delta configuration and a secondary with a wye configuration. The system can be used to operate incandescent and fluorescent lamps, and to power UPS systems.