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Facilitating voltage conversion, from single phase to three phase, is a common issue in locations where three phase power is unavailable, severely lacking or too costly to introduce from the supply line. As a solution, businesses may use a device that converts a two-line, single-phase AC source to three-line, three-phase power. The two options that will be explored in this article include phase converter and variable frequency drive (VFD or inverter).+more

The following is an excerpt from “Understanding Variable Frequency Drives and Appropriate Applications,” a whitepaper by Steve Bruno, product marketing manager, oil-injected screw compressors 30kW -90kW. This is part I of a new series on how variable frequency drives work and how they are used in common air compressor applications.+more