Impact of harmonic voltage distortion on the voltage sag behavior of adjustable speed drives

摘要

The behavior of adjustable speed drives under voltage sag conditions and supplied form non-sinusoidal voltage waveforms has received little attention in recent years. This paper shows that voltage harmonic distortion has a major impact on the drive behavior. The impact of voltage sag conditions, including harmonics is represented by means of voltage tolerance curves. To overcome the impact, a fast field weakening control scheme for field oriented induction motor drives is analyzed.