Industrial power quality considerations when installing adjustable speed drive systems

Developments in digital electronics and power semiconductors have led to a rapid increase in the use of nonlinear devices including adjustable speed drives. For this reason harmonics have become a common problem in many industrial electrical systems. The importance of a complete power system analysis prior to the installation of new equipment is discussed in this paper. Methods of harmonic mitigation and the effect of the IEEE 519 Guideline-1992 on industry are also discussed.