History Founded in 1999, Phase Technologies developed Phase Perfect® digital phase converters, the first major advance of phase conversion technology in decades. Recognized as the world’s leading manufacturer of phase converter technologies, the company expanded its product offerings to include variable frequency drives (VFD). Specializing in VFD with Active Front End technology, Phase Technologies produces the only low harmonic, fully regenerative, phase-converting VFD that complies with IEEE 519, the international standard for allowable harmonic levels on utility mains. The company has a