Designing harmonic filters for adjustable-speed drives to comply with IEEE-519 harmonic limits

This paper discusses the application of the revised IEEE 519 harmonics standard to typical industrial facilities employing adjustable-speed drives (ASDs). The harmonic generation characteristics of ASDs are described. Requirements for control of the harmonic currents are developed as a function of the ASD characteristics, overall plant loading level, power system characteristics, and power-factor-correction requirements. Filter design procedures are presented for controlling the harmonic currents injected into the power system.